./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 02:53:30,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:53:30,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:53:30,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:53:30,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:53:30,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:53:30,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:53:30,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:53:30,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:53:30,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:53:30,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:53:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:53:30,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:53:30,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:53:30,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:53:30,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:53:30,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:53:30,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:53:30,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:53:30,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:53:30,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:53:30,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:53:30,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:53:30,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:53:30,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:53:30,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:53:30,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:53:30,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:53:30,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:53:30,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:53:30,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:53:30,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:53:30,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:53:30,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:53:30,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:53:30,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:53:30,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:53:30,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:53:30,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:53:30,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:53:30,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:53:30,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 02:53:30,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:53:30,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:53:30,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:53:30,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:53:30,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:53:30,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:53:30,373 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 02:53:30,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:53:30,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:53:30,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:53:30,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:53:30,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:53:30,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:53:30,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:53:30,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:53:30,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:53:30,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:53:30,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:53:30,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-23 02:53:30,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:53:30,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:53:30,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:53:30,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:53:30,584 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:53:30,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:53:30,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f8d19f/ea89d8e367b240e883da5702b9d8402c/FLAG66b9ac15b [2021-11-23 02:53:31,278 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:53:31,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:53:31,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f8d19f/ea89d8e367b240e883da5702b9d8402c/FLAG66b9ac15b [2021-11-23 02:53:31,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64f8d19f/ea89d8e367b240e883da5702b9d8402c [2021-11-23 02:53:31,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:53:31,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:53:31,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:53:31,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:53:31,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:53:31,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:31" (1/1) ... [2021-11-23 02:53:31,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7addf82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:31, skipping insertion in model container [2021-11-23 02:53:31,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:31" (1/1) ... [2021-11-23 02:53:31,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:53:31,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:53:33,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-23 02:53:33,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-23 02:53:33,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-23 02:53:33,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-23 02:53:33,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:53:33,702 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:53:33,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-23 02:53:33,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-23 02:53:33,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-23 02:53:33,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-23 02:53:33,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:53:34,140 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:53:34,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34 WrapperNode [2021-11-23 02:53:34,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:53:34,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:53:34,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:53:34,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:53:34,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:34,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:36,684 INFO L137 Inliner]: procedures = 553, calls = 3557, calls flagged for inlining = 1361, calls inlined = 17785, statements flattened = 178865 [2021-11-23 02:53:36,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:53:36,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:53:36,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:53:36,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:53:36,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:36,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:37,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:37,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:38,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:39,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:39,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:40,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:53:40,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:53:40,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:53:40,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:53:40,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (1/1) ... [2021-11-23 02:53:40,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:53:40,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 02:53:40,121 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) [2021-11-23 02:53:40,127 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 [2021-11-23 02:53:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:53:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:53:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:53:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:53:40,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:53:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:53:40,150 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:53:40,988 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:53:40,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:54:31,988 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 02:54:31,988 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res#1 := 0; [2021-11-23 02:54:31,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#1: ldv_switch_4_#res#1 := 0; [2021-11-23 02:54:31,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res#1 := 0; [2021-11-23 02:54:31,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,990 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,990 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,990 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:31,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 02:54:31,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 02:54:31,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 02:54:31,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 02:54:31,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res#1 := 0; [2021-11-23 02:54:31,998 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:54:32,007 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:54:32,107 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:54:32,107 INFO L301 CfgBuilder]: Removed 1033 assume(true) statements. [2021-11-23 02:54:32,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:32 BoogieIcfgContainer [2021-11-23 02:54:32,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:54:32,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:54:32,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:54:32,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:54:32,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:53:31" (1/3) ... [2021-11-23 02:54:32,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ebb187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:32, skipping insertion in model container [2021-11-23 02:54:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:34" (2/3) ... [2021-11-23 02:54:32,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ebb187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:32, skipping insertion in model container [2021-11-23 02:54:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:32" (3/3) ... [2021-11-23 02:54:32,146 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:54:32,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:54:32,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1395 error locations. [2021-11-23 02:54:32,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:54:32,278 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 [2021-11-23 02:54:32,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1395 error locations. [2021-11-23 02:54:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 41192 states, 39797 states have (on average 1.384325451667211) internal successors, (55092), 41191 states have internal predecessors, (55092), 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) [2021-11-23 02:54:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-23 02:54:32,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:32,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:32,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-23 02:54:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1174769735, now seen corresponding path program 1 times [2021-11-23 02:54:32,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:32,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102756282] [2021-11-23 02:54:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:32,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:33,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102756282] [2021-11-23 02:54:33,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102756282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:33,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:33,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:33,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738908692] [2021-11-23 02:54:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:33,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:33,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:33,335 INFO L87 Difference]: Start difference. First operand has 41192 states, 39797 states have (on average 1.384325451667211) internal successors, (55092), 41191 states have internal predecessors, (55092), 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 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-23 02:54:35,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:35,549 INFO L93 Difference]: Finished difference Result 119398 states and 159816 transitions. [2021-11-23 02:54:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2021-11-23 02:54:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:36,020 INFO L225 Difference]: With dead ends: 119398 [2021-11-23 02:54:36,021 INFO L226 Difference]: Without dead ends: 75100 [2021-11-23 02:54:36,125 INFO L932 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 [2021-11-23 02:54:36,128 INFO L933 BasicCegarLoop]: 47638 mSDtfsCounter, 46812 mSDsluCounter, 47530 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46812 SdHoareTripleChecker+Valid, 95168 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:36,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46812 Valid, 95168 Invalid, 54 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75100 states. [2021-11-23 02:54:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75100 to 72364. [2021-11-23 02:54:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72364 states, 70969 states have (on average 1.2112471642548155) internal successors, (85961), 72363 states have internal predecessors, (85961), 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) [2021-11-23 02:54:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72364 states to 72364 states and 85961 transitions. [2021-11-23 02:54:38,042 INFO L78 Accepts]: Start accepts. Automaton has 72364 states and 85961 transitions. Word has length 156 [2021-11-23 02:54:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:38,046 INFO L470 AbstractCegarLoop]: Abstraction has 72364 states and 85961 transitions. [2021-11-23 02:54:38,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-23 02:54:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 72364 states and 85961 transitions. [2021-11-23 02:54:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 02:54:38,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:38,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:38,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:54:38,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-23 02:54:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1879148433, now seen corresponding path program 1 times [2021-11-23 02:54:38,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281571483] [2021-11-23 02:54:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:38,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:38,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:38,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281571483] [2021-11-23 02:54:38,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281571483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:38,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:38,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960098939] [2021-11-23 02:54:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:38,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:38,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:38,309 INFO L87 Difference]: Start difference. First operand 72364 states and 85961 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-23 02:54:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:40,344 INFO L93 Difference]: Finished difference Result 164858 states and 194771 transitions. [2021-11-23 02:54:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2021-11-23 02:54:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:40,616 INFO L225 Difference]: With dead ends: 164858 [2021-11-23 02:54:40,617 INFO L226 Difference]: Without dead ends: 92851 [2021-11-23 02:54:40,749 INFO L932 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 [2021-11-23 02:54:40,750 INFO L933 BasicCegarLoop]: 43985 mSDtfsCounter, 33263 mSDsluCounter, 43928 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33263 SdHoareTripleChecker+Valid, 87913 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:40,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33263 Valid, 87913 Invalid, 98 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92851 states. [2021-11-23 02:54:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92851 to 90533. [2021-11-23 02:54:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90533 states, 89138 states have (on average 1.2110884246898068) internal successors, (107954), 90532 states have internal predecessors, (107954), 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) [2021-11-23 02:54:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90533 states to 90533 states and 107954 transitions. [2021-11-23 02:54:42,696 INFO L78 Accepts]: Start accepts. Automaton has 90533 states and 107954 transitions. Word has length 160 [2021-11-23 02:54:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:42,697 INFO L470 AbstractCegarLoop]: Abstraction has 90533 states and 107954 transitions. [2021-11-23 02:54:42,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-23 02:54:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 90533 states and 107954 transitions. [2021-11-23 02:54:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 02:54:42,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:42,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:42,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:54:42,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1252ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-23 02:54:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash 983928145, now seen corresponding path program 1 times [2021-11-23 02:54:42,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:42,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071917838] [2021-11-23 02:54:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:42,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:42,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:42,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071917838] [2021-11-23 02:54:42,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071917838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:42,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:42,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:42,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129357140] [2021-11-23 02:54:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:42,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:42,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:42,898 INFO L87 Difference]: Start difference. First operand 90533 states and 107954 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-23 02:54:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:45,295 INFO L93 Difference]: Finished difference Result 230308 states and 274067 transitions. [2021-11-23 02:54:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:45,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2021-11-23 02:54:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:45,671 INFO L225 Difference]: With dead ends: 230308 [2021-11-23 02:54:45,672 INFO L226 Difference]: Without dead ends: 140132 [2021-11-23 02:54:45,806 INFO L932 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 [2021-11-23 02:54:45,807 INFO L933 BasicCegarLoop]: 43994 mSDtfsCounter, 37814 mSDsluCounter, 43974 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37814 SdHoareTripleChecker+Valid, 87968 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:45,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37814 Valid, 87968 Invalid, 36 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140132 states. [2021-11-23 02:54:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140132 to 137466. [2021-11-23 02:54:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137466 states, 136071 states have (on average 1.2132048709864702) internal successors, (165082), 137465 states have internal predecessors, (165082), 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) [2021-11-23 02:54:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137466 states to 137466 states and 165082 transitions. [2021-11-23 02:54:49,088 INFO L78 Accepts]: Start accepts. Automaton has 137466 states and 165082 transitions. Word has length 161 [2021-11-23 02:54:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:49,088 INFO L470 AbstractCegarLoop]: Abstraction has 137466 states and 165082 transitions. [2021-11-23 02:54:49,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-23 02:54:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 137466 states and 165082 transitions. [2021-11-23 02:54:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 02:54:49,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:49,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:49,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:54:49,107 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr625ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-23 02:54:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1599109962, now seen corresponding path program 1 times [2021-11-23 02:54:49,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:49,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394187279] [2021-11-23 02:54:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:49,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:49,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:49,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394187279] [2021-11-23 02:54:49,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394187279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:49,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:49,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:49,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089774934] [2021-11-23 02:54:49,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:49,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:49,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:49,260 INFO L87 Difference]: Start difference. First operand 137466 states and 165082 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-23 02:54:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:52,371 INFO L93 Difference]: Finished difference Result 319827 states and 383716 transitions. [2021-11-23 02:54:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2021-11-23 02:54:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:53,021 INFO L225 Difference]: With dead ends: 319827 [2021-11-23 02:54:53,021 INFO L226 Difference]: Without dead ends: 182718 [2021-11-23 02:54:53,200 INFO L932 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 [2021-11-23 02:54:53,201 INFO L933 BasicCegarLoop]: 43984 mSDtfsCounter, 26180 mSDsluCounter, 43928 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26180 SdHoareTripleChecker+Valid, 87912 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:53,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26180 Valid, 87912 Invalid, 98 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182718 states. [2021-11-23 02:54:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182718 to 181076. [2021-11-23 02:54:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181076 states, 179681 states have (on average 1.2137232094656643) internal successors, (218083), 181075 states have internal predecessors, (218083), 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) [2021-11-23 02:54:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181076 states to 181076 states and 218083 transitions. [2021-11-23 02:54:56,941 INFO L78 Accepts]: Start accepts. Automaton has 181076 states and 218083 transitions. Word has length 162 [2021-11-23 02:54:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:56,941 INFO L470 AbstractCegarLoop]: Abstraction has 181076 states and 218083 transitions. [2021-11-23 02:54:56,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-23 02:54:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 181076 states and 218083 transitions. [2021-11-23 02:54:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-23 02:54:56,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:56,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:56,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:54:56,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1370ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1392 more)] === [2021-11-23 02:54:56,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1850011876, now seen corresponding path program 1 times [2021-11-23 02:54:56,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:56,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156174700] [2021-11-23 02:54:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:56,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:57,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156174700] [2021-11-23 02:54:57,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156174700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:57,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:57,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:57,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468455458] [2021-11-23 02:54:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:57,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:57,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:57,522 INFO L87 Difference]: Start difference. First operand 181076 states and 218083 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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)