./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-mutex_drivers-net-wireless-prism54-prism54.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-mutex_drivers-net-wireless-prism54-prism54.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 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:44:32,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:44:32,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:44:32,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:44:32,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:44:32,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:44:32,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:44:32,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:44:32,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:44:33,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:44:33,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:44:33,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:44:33,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:44:33,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:44:33,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:44:33,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:44:33,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:44:33,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:44:33,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:44:33,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:44:33,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:44:33,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:44:33,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:44:33,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:44:33,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:44:33,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:44:33,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:44:33,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:44:33,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:44:33,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:44:33,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:44:33,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:44:33,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:44:33,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:44:33,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:44:33,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:44:33,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:44:33,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:44:33,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:44:33,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:44:33,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:44:33,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:44:33,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:44:33,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:44:33,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:44:33,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:44:33,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:44:33,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:44:33,079 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:44:33,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:44:33,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:44:33,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:44:33,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:44:33,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:44:33,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:44:33,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:44:33,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:44:33,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:44:33,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:44:33,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:44:33,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:44:33,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:44:33,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:44:33,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:44:33,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:44:33,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:44:33,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:44:33,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:44:33,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:44:33,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:44:33,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:44:33,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 [2021-11-06 18:44:33,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:44:33,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:44:33,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:44:33,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:44:33,350 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:44:33,351 INFO L432 ainManager$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-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 18:44:33,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695dba1a0/91ac31106c324b8c89aaa8ce8a3c1254/FLAG500c323c1 [2021-11-06 18:44:34,235 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:44:34,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 18:44:34,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695dba1a0/91ac31106c324b8c89aaa8ce8a3c1254/FLAG500c323c1 [2021-11-06 18:44:34,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695dba1a0/91ac31106c324b8c89aaa8ce8a3c1254 [2021-11-06 18:44:34,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:44:34,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:44:34,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:44:34,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:44:34,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:44:34,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:44:34" (1/1) ... [2021-11-06 18:44:34,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ab7378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:34, skipping insertion in model container [2021-11-06 18:44:34,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:44:34" (1/1) ... [2021-11-06 18:44:34,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:44:34,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:44:38,650 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-06 18:44:38,655 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-06 18:44:38,656 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-06 18:44:38,656 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-06 18:44:38,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:44:38,814 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:44:39,226 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-06 18:44:39,226 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-06 18:44:39,227 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-06 18:44:39,227 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-06 18:44:39,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:44:39,522 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:44:39,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39 WrapperNode [2021-11-06 18:44:39,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:44:39,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:44:39,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:44:39,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:44:39,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:39,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:41,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:44:41,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:44:41,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:44:41,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:44:41,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:41,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:42,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:42,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:43,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:43,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:43,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:44,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:44:44,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:44:44,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:44:44,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:44:44,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (1/1) ... [2021-11-06 18:44:44,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:44:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:44:44,232 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 18:44:44,245 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 18:44:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-06 18:44:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-06 18:44:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 18:44:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-06 18:44:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:44:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:44:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:44:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:44:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:44:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:44:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:44:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:45:27,365 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:45:27,365 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:45:27,365 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:45:27,366 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:45:27,368 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:45:27,369 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:45:27,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:45:27,425 INFO L299 CfgBuilder]: Removed 14751 assume(true) statements. [2021-11-06 18:45:27,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:45:27 BoogieIcfgContainer [2021-11-06 18:45:27,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:45:27,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:45:27,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:45:27,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:45:27,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:44:34" (1/3) ... [2021-11-06 18:45:27,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0a327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:45:27, skipping insertion in model container [2021-11-06 18:45:27,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:44:39" (2/3) ... [2021-11-06 18:45:27,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0a327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:45:27, skipping insertion in model container [2021-11-06 18:45:27,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:45:27" (3/3) ... [2021-11-06 18:45:27,446 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 18:45:27,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:45:27,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 203 error locations. [2021-11-06 18:45:27,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:45:27,543 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 18:45:27,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 203 error locations. [2021-11-06 18:45:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 14510 states, 14239 states have (on average 1.357609382681368) internal successors, (19331), 14441 states have internal predecessors, (19331), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-06 18:45:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 18:45:27,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:45:27,746 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] [2021-11-06 18:45:27,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:45:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:45:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1083935826, now seen corresponding path program 1 times [2021-11-06 18:45:27,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:45:27,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975108354] [2021-11-06 18:45:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:45:27,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:45:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:45:28,771 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 18:45:28,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:45:28,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975108354] [2021-11-06 18:45:28,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975108354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:45:28,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:45:28,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:45:28,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934277888] [2021-11-06 18:45:28,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:45:28,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:45:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:45:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:45:28,838 INFO L87 Difference]: Start difference. First operand has 14510 states, 14239 states have (on average 1.357609382681368) internal successors, (19331), 14441 states have internal predecessors, (19331), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:45:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:45:32,146 INFO L93 Difference]: Finished difference Result 43000 states and 57910 transitions. [2021-11-06 18:45:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:45:32,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-06 18:45:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:45:32,293 INFO L225 Difference]: With dead ends: 43000 [2021-11-06 18:45:32,293 INFO L226 Difference]: Without dead ends: 27932 [2021-11-06 18:45:32,341 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 18:45:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27932 states. [2021-11-06 18:45:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27932 to 27568. [2021-11-06 18:45:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27568 states, 27229 states have (on average 1.263395644349774) internal successors, (34401), 27431 states have internal predecessors, (34401), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-06 18:45:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27568 states to 27568 states and 34665 transitions. [2021-11-06 18:45:33,251 INFO L78 Accepts]: Start accepts. Automaton has 27568 states and 34665 transitions. Word has length 37 [2021-11-06 18:45:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:45:33,253 INFO L470 AbstractCegarLoop]: Abstraction has 27568 states and 34665 transitions. [2021-11-06 18:45:33,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:45:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 27568 states and 34665 transitions. [2021-11-06 18:45:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 18:45:33,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:45:33,261 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] [2021-11-06 18:45:33,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:45:33,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr201ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:45:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:45:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 689155734, now seen corresponding path program 1 times [2021-11-06 18:45:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:45:33,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925210558] [2021-11-06 18:45:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:45:33,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:45:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:45:33,863 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 18:45:33,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:45:33,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925210558] [2021-11-06 18:45:33,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925210558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:45:33,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:45:33,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:45:33,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072788327] [2021-11-06 18:45:33,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:45:33,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:45:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:45:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:45:33,867 INFO L87 Difference]: Start difference. First operand 27568 states and 34665 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:45:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:45:37,074 INFO L93 Difference]: Finished difference Result 69030 states and 86658 transitions. [2021-11-06 18:45:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:45:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-06 18:45:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:45:37,207 INFO L225 Difference]: With dead ends: 69030 [2021-11-06 18:45:37,208 INFO L226 Difference]: Without dead ends: 41514 [2021-11-06 18:45:37,280 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 18:45:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41514 states. [2021-11-06 18:45:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41514 to 41048. [2021-11-06 18:45:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41048 states, 40641 states have (on average 1.263797642774538) internal successors, (51362), 40843 states have internal predecessors, (51362), 198 states have call successors, (198), 6 states have call predecessors, (198), 6 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2021-11-06 18:45:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41048 states to 41048 states and 51758 transitions. [2021-11-06 18:45:38,378 INFO L78 Accepts]: Start accepts. Automaton has 41048 states and 51758 transitions. Word has length 37 [2021-11-06 18:45:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:45:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 41048 states and 51758 transitions. [2021-11-06 18:45:38,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 18:45:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 41048 states and 51758 transitions. [2021-11-06 18:45:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 18:45:38,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:45:38,387 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 18:45:38,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:45:38,387 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:45:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:45:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash -996259079, now seen corresponding path program 1 times [2021-11-06 18:45:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:45:38,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176005731] [2021-11-06 18:45:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:45:38,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:45:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:45:39,115 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 18:45:39,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:45:39,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176005731] [2021-11-06 18:45:39,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176005731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:45:39,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:45:39,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 18:45:39,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407210180] [2021-11-06 18:45:39,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 18:45:39,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:45:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 18:45:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:45:39,118 INFO L87 Difference]: Start difference. First operand 41048 states and 51758 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 18:45:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:45:43,724 INFO L93 Difference]: Finished difference Result 94589 states and 119462 transitions. [2021-11-06 18:45:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:45:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 18:45:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:45:43,897 INFO L225 Difference]: With dead ends: 94589 [2021-11-06 18:45:43,898 INFO L226 Difference]: Without dead ends: 53593 [2021-11-06 18:45:44,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:45:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53593 states. [2021-11-06 18:45:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53593 to 53205. [2021-11-06 18:45:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53205 states, 52711 states have (on average 1.269450399347385) internal successors, (66914), 52913 states have internal predecessors, (66914), 277 states have call successors, (277), 14 states have call predecessors, (277), 14 states have return successors, (277), 277 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-06 18:45:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53205 states to 53205 states and 67468 transitions. [2021-11-06 18:45:45,500 INFO L78 Accepts]: Start accepts. Automaton has 53205 states and 67468 transitions. Word has length 39 [2021-11-06 18:45:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:45:45,505 INFO L470 AbstractCegarLoop]: Abstraction has 53205 states and 67468 transitions. [2021-11-06 18:45:45,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 18:45:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 53205 states and 67468 transitions. [2021-11-06 18:45:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 18:45:45,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:45:45,506 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 18:45:45,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:45:45,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:45:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:45:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1512098561, now seen corresponding path program 1 times [2021-11-06 18:45:45,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:45:45,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581628828] [2021-11-06 18:45:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:45:45,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:45:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:45:45,920 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 18:45:45,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:45:45,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581628828] [2021-11-06 18:45:45,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581628828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:45:45,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:45:45,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:45:45,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635280204] [2021-11-06 18:45:45,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:45:45,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:45:45,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:45:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:45:45,923 INFO L87 Difference]: Start difference. First operand 53205 states and 67468 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 18:45:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:45:49,643 INFO L93 Difference]: Finished difference Result 123093 states and 155736 transitions. [2021-11-06 18:45:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:45:49,644 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 18:45:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:45:49,842 INFO L225 Difference]: With dead ends: 123093 [2021-11-06 18:45:49,843 INFO L226 Difference]: Without dead ends: 69940 [2021-11-06 18:45:49,929 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 18:45:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69940 states. [2021-11-06 18:45:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69940 to 69200. [2021-11-06 18:45:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69200 states, 68651 states have (on average 1.2661723791350454) internal successors, (86924), 68853 states have internal predecessors, (86924), 328 states have call successors, (328), 18 states have call predecessors, (328), 18 states have return successors, (328), 328 states have call predecessors, (328), 328 states have call successors, (328) [2021-11-06 18:45:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69200 states to 69200 states and 87580 transitions. [2021-11-06 18:45:51,711 INFO L78 Accepts]: Start accepts. Automaton has 69200 states and 87580 transitions. Word has length 45 [2021-11-06 18:45:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:45:51,713 INFO L470 AbstractCegarLoop]: Abstraction has 69200 states and 87580 transitions. [2021-11-06 18:45:51,713 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 18:45:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 69200 states and 87580 transitions. [2021-11-06 18:45:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 18:45:51,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:45:51,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:45:51,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:45:51,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:45:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:45:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2111327557, now seen corresponding path program 1 times [2021-11-06 18:45:51,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:45:51,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061893820] [2021-11-06 18:45:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:45:51,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:45:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:45:52,360 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 18:45:52,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:45:52,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061893820] [2021-11-06 18:45:52,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061893820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:45:52,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:45:52,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:45:52,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323763298] [2021-11-06 18:45:52,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:45:52,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:45:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:45:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:45:52,363 INFO L87 Difference]: Start difference. First operand 69200 states and 87580 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 18:45:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:45:56,760 INFO L93 Difference]: Finished difference Result 205432 states and 260077 transitions. [2021-11-06 18:45:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:45:56,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-06 18:45:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:45:57,214 INFO L225 Difference]: With dead ends: 205432 [2021-11-06 18:45:57,214 INFO L226 Difference]: Without dead ends: 136986 [2021-11-06 18:45:57,332 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 18:45:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136986 states. [2021-11-06 18:46:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136986 to 136622. [2021-11-06 18:46:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136622 states, 135727 states have (on average 1.2662771592977078) internal successors, (171868), 135929 states have internal predecessors, (171868), 656 states have call successors, (656), 36 states have call predecessors, (656), 36 states have return successors, (656), 656 states have call predecessors, (656), 656 states have call successors, (656) [2021-11-06 18:46:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136622 states to 136622 states and 173180 transitions. [2021-11-06 18:46:00,601 INFO L78 Accepts]: Start accepts. Automaton has 136622 states and 173180 transitions. Word has length 82 [2021-11-06 18:46:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:46:00,603 INFO L470 AbstractCegarLoop]: Abstraction has 136622 states and 173180 transitions. [2021-11-06 18:46:00,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 18:46:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 136622 states and 173180 transitions. [2021-11-06 18:46:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 18:46:00,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:46:00,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:46:00,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:46:00,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-06 18:46:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:46:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1090259203, now seen corresponding path program 1 times [2021-11-06 18:46:00,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:46:00,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473781541] [2021-11-06 18:46:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:46:00,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:46:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:46:01,007 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 18:46:01,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:46:01,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473781541] [2021-11-06 18:46:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473781541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:46:01,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:46:01,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:46:01,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017743382] [2021-11-06 18:46:01,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:46:01,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:46:01,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:46:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:46:01,012 INFO L87 Difference]: Start difference. First operand 136622 states and 173180 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 18:46:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:46:06,927 INFO L93 Difference]: Finished difference Result 340288 states and 431301 transitions. [2021-11-06 18:46:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:46:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-06 18:46:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:46:07,715 INFO L225 Difference]: With dead ends: 340288 [2021-11-06 18:46:07,715 INFO L226 Difference]: Without dead ends: 204420 [2021-11-06 18:46:07,885 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 18:46:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204420 states.