./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.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 05e3ebea4820703b3259b4b6dd440513670562ea5166f99f8e3aabd0be2e3f32 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 02:42:58,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 02:42:58,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 02:42:58,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 02:42:58,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 02:42:58,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 02:42:58,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 02:42:58,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 02:42:58,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 02:42:58,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 02:42:58,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 02:42:58,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 02:42:58,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 02:42:58,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 02:42:58,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 02:42:58,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 02:42:58,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 02:42:58,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 02:42:58,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 02:42:58,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 02:42:58,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 02:42:58,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 02:42:58,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 02:42:58,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 02:42:58,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 02:42:58,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 02:42:58,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 02:42:58,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 02:42:58,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 02:42:58,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 02:42:58,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 02:42:58,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 02:42:58,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 02:42:58,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 02:42:58,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 02:42:58,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 02:42:58,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 02:42:58,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 02:42:58,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 02:42:58,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 02:42:58,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 02:42:58,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 02:42:58,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 02:42:58,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 02:42:58,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 02:42:58,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 02:42:58,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 02:42:58,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 02:42:58,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 02:42:58,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 02:42:58,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 02:42:58,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 02:42:58,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 02:42:58,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 02:42:58,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 02:42:58,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 02:42:58,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 02:42:58,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 02:42:58,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 02:42:58,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 02:42:58,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 02:42:58,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:42:58,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 02:42:58,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 02:42:58,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 02:42:58,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3ebea4820703b3259b4b6dd440513670562ea5166f99f8e3aabd0be2e3f32 [2021-11-03 02:42:58,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 02:42:58,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 02:42:58,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 02:42:58,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 02:42:58,383 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 02:42:58,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 02:42:58,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d951e9a37/1e0abfdd36094fcd97aff7103a7577fd/FLAG1cb96dce1 [2021-11-03 02:42:59,033 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 02:42:59,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 02:42:59,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d951e9a37/1e0abfdd36094fcd97aff7103a7577fd/FLAG1cb96dce1 [2021-11-03 02:42:59,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d951e9a37/1e0abfdd36094fcd97aff7103a7577fd [2021-11-03 02:42:59,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 02:42:59,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 02:42:59,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 02:42:59,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 02:42:59,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 02:42:59,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:59" (1/1) ... [2021-11-03 02:42:59,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a485590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:59, skipping insertion in model container [2021-11-03 02:42:59,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:59" (1/1) ... [2021-11-03 02:42:59,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 02:42:59,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 02:43:02,090 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460236,460249] [2021-11-03 02:43:02,094 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460405,460418] [2021-11-03 02:43:02,095 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460572,460585] [2021-11-03 02:43:02,096 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460740,460753] [2021-11-03 02:43:02,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:43:02,171 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 02:43:02,434 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460236,460249] [2021-11-03 02:43:02,435 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460405,460418] [2021-11-03 02:43:02,436 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460572,460585] [2021-11-03 02:43:02,436 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460740,460753] [2021-11-03 02:43:02,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:43:02,645 INFO L208 MainTranslator]: Completed translation [2021-11-03 02:43:02,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02 WrapperNode [2021-11-03 02:43:02,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 02:43:02,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 02:43:02,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 02:43:02,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 02:43:02,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:02,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:12,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 02:43:12,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 02:43:12,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 02:43:12,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 02:43:12,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:14,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:14,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:17,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:18,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:18,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:20,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 02:43:20,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 02:43:20,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 02:43:20,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 02:43:20,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (1/1) ... [2021-11-03 02:43:20,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:43:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 02:43:20,183 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) [2021-11-03 02:43:20,200 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 [2021-11-03 02:43:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 02:43:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-03 02:43:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 02:43:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 02:43:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 02:43:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 02:43:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 02:43:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 02:43:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 02:43:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 02:43:37,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-03 02:43:37,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-03 02:43:37,377 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-03 02:43:37,378 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-03 02:43:37,379 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 02:43:37,384 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 02:43:37,385 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-03 02:43:37,385 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 02:43:37,385 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 02:43:37,386 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 02:43:37,389 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 02:43:37,429 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-03 02:43:37,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 02:43:37,608 INFO L299 CfgBuilder]: Removed 87792 assume(true) statements. [2021-11-03 02:43:37,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:43:37 BoogieIcfgContainer [2021-11-03 02:43:37,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 02:43:37,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 02:43:37,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 02:43:37,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 02:43:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:42:59" (1/3) ... [2021-11-03 02:43:37,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba98607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:43:37, skipping insertion in model container [2021-11-03 02:43:37,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:43:02" (2/3) ... [2021-11-03 02:43:37,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba98607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:43:37, skipping insertion in model container [2021-11-03 02:43:37,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:43:37" (3/3) ... [2021-11-03 02:43:37,662 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 02:43:37,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 02:43:37,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1281 error locations. [2021-11-03 02:43:37,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 02:43:38,024 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 [2021-11-03 02:43:38,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1281 error locations. [2021-11-03 02:43:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 67308 states, 66027 states have (on average 1.2818695382192133) internal successors, (84638), 67307 states have internal predecessors, (84638), 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) [2021-11-03 02:43:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 02:43:38,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:43:38,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:43:38,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-03 02:43:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:43:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1586885002, now seen corresponding path program 1 times [2021-11-03 02:43:38,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:43:38,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764896429] [2021-11-03 02:43:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:43:38,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:43:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:43:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:43:39,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:43:39,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764896429] [2021-11-03 02:43:39,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764896429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:43:39,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:43:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:43:39,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492761773] [2021-11-03 02:43:39,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:43:39,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:43:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:43:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:43:39,290 INFO L87 Difference]: Start difference. First operand has 67308 states, 66027 states have (on average 1.2818695382192133) internal successors, (84638), 67307 states have internal predecessors, (84638), 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 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:43:58,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:46:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:46:22,802 INFO L93 Difference]: Finished difference Result 199115 states and 249509 transitions. [2021-11-03 02:46:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:46:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 02:46:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:46:23,372 INFO L225 Difference]: With dead ends: 199115 [2021-11-03 02:46:23,372 INFO L226 Difference]: Without dead ends: 127931 [2021-11-03 02:46:23,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:46:23,585 INFO L933 BasicCegarLoop]: 2038 mSDtfsCounter, 80105 mSDsluCounter, 80253 mSDsCounter, 0 mSdLazyCounter, 156994 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130204.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80105 SdHoareTripleChecker+Valid, 4076 SdHoareTripleChecker+Invalid, 157092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 288.01ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 156994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158819.44ms IncrementalHoareTripleChecker+Time [2021-11-03 02:46:23,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80105 Valid, 4076 Invalid, 157092 Unknown, 0 Unchecked, 288.01ms Time], IncrementalHoareTripleChecker [97 Valid, 156994 Invalid, 1 Unknown, 0 Unchecked, 158819.44ms Time] [2021-11-03 02:46:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127931 states. [2021-11-03 02:46:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127931 to 125253. [2021-11-03 02:46:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125253 states, 123972 states have (on average 1.2201545510276515) internal successors, (151265), 125252 states have internal predecessors, (151265), 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) [2021-11-03 02:46:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125253 states to 125253 states and 151265 transitions. [2021-11-03 02:46:26,928 INFO L78 Accepts]: Start accepts. Automaton has 125253 states and 151265 transitions. Word has length 66 [2021-11-03 02:46:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:46:26,930 INFO L470 AbstractCegarLoop]: Abstraction has 125253 states and 151265 transitions. [2021-11-03 02:46:26,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:46:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 125253 states and 151265 transitions. [2021-11-03 02:46:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 02:46:26,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:46:26,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:46:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 02:46:26,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-03 02:46:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:46:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -23353293, now seen corresponding path program 1 times [2021-11-03 02:46:26,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:46:26,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219349227] [2021-11-03 02:46:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:46:26,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:46:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:46:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:46:27,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:46:27,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219349227] [2021-11-03 02:46:27,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219349227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:46:27,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:46:27,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:46:27,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21472085] [2021-11-03 02:46:27,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:46:27,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:46:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:46:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:46:27,184 INFO L87 Difference]: Start difference. First operand 125253 states and 151265 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:47:29,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:48:36,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:49:22,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-03 02:51:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:51:21,140 INFO L93 Difference]: Finished difference Result 372019 states and 449283 transitions. [2021-11-03 02:51:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:51:21,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 02:51:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:51:21,885 INFO L225 Difference]: With dead ends: 372019 [2021-11-03 02:51:21,886 INFO L226 Difference]: Without dead ends: 246898 [2021-11-03 02:51:22,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:51:22,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 76137 mSDsluCounter, 74423 mSDsCounter, 0 mSdLazyCounter, 151029 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232524.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 237.78ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 151029 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287120.28ms IncrementalHoareTripleChecker+Time [2021-11-03 02:51:22,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76137 Valid, 0 Invalid, 151063 Unknown, 0 Unchecked, 237.78ms Time], IncrementalHoareTripleChecker [32 Valid, 151029 Invalid, 2 Unknown, 0 Unchecked, 287120.28ms Time] [2021-11-03 02:51:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246898 states. [2021-11-03 02:51:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246898 to 242356. [2021-11-03 02:51:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242356 states, 241075 states have (on average 1.2212672404853262) internal successors, (294417), 242355 states have internal predecessors, (294417), 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) [2021-11-03 02:51:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242356 states to 242356 states and 294417 transitions. [2021-11-03 02:51:27,826 INFO L78 Accepts]: Start accepts. Automaton has 242356 states and 294417 transitions. Word has length 66 [2021-11-03 02:51:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:51:27,827 INFO L470 AbstractCegarLoop]: Abstraction has 242356 states and 294417 transitions. [2021-11-03 02:51:27,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 02:51:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 242356 states and 294417 transitions. [2021-11-03 02:51:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 02:51:27,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:51:27,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:51:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 02:51:27,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-03 02:51:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:51:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash -746839052, now seen corresponding path program 1 times [2021-11-03 02:51:27,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:51:27,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827267810] [2021-11-03 02:51:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:51:27,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:51:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:51:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:51:28,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:51:28,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827267810] [2021-11-03 02:51:28,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827267810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:51:28,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:51:28,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:51:28,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333744490] [2021-11-03 02:51:28,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:51:28,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:51:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:51:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:51:28,063 INFO L87 Difference]: Start difference. First operand 242356 states and 294417 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)