./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-nfs-nfs_layout_nfsv41_files.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-nfs-nfs_layout_nfsv41_files.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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 02:53:58,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:53:58,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:53:58,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:53:58,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:53:58,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:53:58,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:53:58,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:53:58,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:53:58,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:53:58,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:53:58,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:53:58,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:53:58,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:53:58,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:53:58,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:53:58,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:53:58,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:53:58,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:53:58,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:53:58,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:53:58,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:53:58,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:53:58,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:53:58,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:53:58,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:53:58,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:53:58,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:53:58,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:53:58,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:53:58,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:53:58,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:53:58,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:53:58,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:53:58,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:53:58,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:53:58,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:53:58,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:53:58,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:53:58,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:53:58,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:53:58,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 02:53:58,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:53:58,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:53:58,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:53:58,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:53:58,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:53:58,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:53:58,150 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 02:53:58,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:53:58,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:53:58,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:53:58,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:53:58,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:53:58,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:53:58,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:53:58,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:53:58,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:53:58,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:53:58,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:53:58,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:53:58,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:53:58,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 02:53:58,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 02:53:58,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:53:58,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:53:58,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-23 02:53:58,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:53:58,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:53:58,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:53:58,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:53:58,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:53:58,369 INFO L432 ainManager$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-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:53:58,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d8ec80e/221dfe4787344cf5b465f18ad4d969a0/FLAG597ffe6c1 [2021-11-23 02:53:59,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:53:59,182 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-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:53:59,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d8ec80e/221dfe4787344cf5b465f18ad4d969a0/FLAG597ffe6c1 [2021-11-23 02:53:59,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d8ec80e/221dfe4787344cf5b465f18ad4d969a0 [2021-11-23 02:53:59,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:53:59,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:53:59,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:53:59,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:53:59,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:53:59,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:59" (1/1) ... [2021-11-23 02:53:59,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fc696d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:59, skipping insertion in model container [2021-11-23 02:53:59,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:53:59" (1/1) ... [2021-11-23 02:53:59,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:53:59,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:54:02,284 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-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-23 02:54:02,286 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-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-23 02:54:02,287 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-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-23 02:54:02,287 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-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-23 02:54:02,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:02,320 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:54:02,613 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-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-23 02:54:02,614 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-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-23 02:54:02,614 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-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-23 02:54:02,615 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-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-23 02:54:02,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:02,732 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:54:02,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02 WrapperNode [2021-11-23 02:54:02,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:54:02,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:54:02,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:54:02,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:54:02,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:02,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,276 INFO L137 Inliner]: procedures = 522, calls = 2018, calls flagged for inlining = 1080, calls inlined = 2571, statements flattened = 25695 [2021-11-23 02:54:03,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:54:03,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:54:03,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:54:03,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:54:03,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:54:03,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:54:03,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:54:03,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:54:03,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (1/1) ... [2021-11-23 02:54:03,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:54:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 02:54:03,980 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 02:54:03,998 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 02:54:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 02:54:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:54:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-23 02:54:04,016 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:54:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-23 02:54:04,016 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:54:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:54:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:54:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:54:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:54:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:54:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:54:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-23 02:54:04,018 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-23 02:54:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-23 02:54:04,018 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-23 02:54:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-23 02:54:04,019 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-23 02:54:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:54:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-23 02:54:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-23 02:54:04,019 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-23 02:54:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:54:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:54:04,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 02:54:05,151 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:54:05,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:54:11,381 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 02:54:11,382 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 02:54:11,382 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:11,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:11,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 02:54:11,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:54:11,396 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:54:11,422 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:54:11,423 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 02:54:11,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:11 BoogieIcfgContainer [2021-11-23 02:54:11,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:54:11,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:54:11,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:54:11,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:54:11,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:53:59" (1/3) ... [2021-11-23 02:54:11,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d7d2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:11, skipping insertion in model container [2021-11-23 02:54:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:02" (2/3) ... [2021-11-23 02:54:11,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d7d2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:11, skipping insertion in model container [2021-11-23 02:54:11,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:11" (3/3) ... [2021-11-23 02:54:11,437 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-23 02:54:11,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:54:11,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2021-11-23 02:54:11,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:54:11,503 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 02:54:11,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2021-11-23 02:54:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 5075 states, 4954 states have (on average 1.302785627775535) internal successors, (6454), 5050 states have internal predecessors, (6454), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:54:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 02:54:11,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:11,617 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] [2021-11-23 02:54:11,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2071781917, now seen corresponding path program 1 times [2021-11-23 02:54:11,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:11,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840132980] [2021-11-23 02:54:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:11,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:12,190 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 02:54:12,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:12,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840132980] [2021-11-23 02:54:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840132980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:12,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:12,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:12,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828732447] [2021-11-23 02:54:12,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:12,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:12,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:12,236 INFO L87 Difference]: Start difference. First operand has 5075 states, 4954 states have (on average 1.302785627775535) internal successors, (6454), 5050 states have internal predecessors, (6454), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 02:54:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:12,720 INFO L93 Difference]: Finished difference Result 14245 states and 18284 transitions. [2021-11-23 02:54:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:12,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2021-11-23 02:54:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:12,768 INFO L225 Difference]: With dead ends: 14245 [2021-11-23 02:54:12,769 INFO L226 Difference]: Without dead ends: 8947 [2021-11-23 02:54:12,790 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 02:54:12,793 INFO L933 BasicCegarLoop]: 6386 mSDtfsCounter, 5645 mSDsluCounter, 6334 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5645 SdHoareTripleChecker+Valid, 12720 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:12,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5645 Valid, 12720 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8947 states. [2021-11-23 02:54:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 8867. [2021-11-23 02:54:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8867 states, 8716 states have (on average 1.2360027535566773) internal successors, (10773), 8818 states have internal predecessors, (10773), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (44), 36 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 02:54:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 10861 transitions. [2021-11-23 02:54:13,071 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 10861 transitions. Word has length 118 [2021-11-23 02:54:13,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 8867 states and 10861 transitions. [2021-11-23 02:54:13,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 02:54:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 10861 transitions. [2021-11-23 02:54:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 02:54:13,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:13,077 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] [2021-11-23 02:54:13,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:54:13,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1115241053, now seen corresponding path program 1 times [2021-11-23 02:54:13,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974584013] [2021-11-23 02:54:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:13,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:13,231 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 02:54:13,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:13,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974584013] [2021-11-23 02:54:13,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974584013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:13,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:13,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:13,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567227602] [2021-11-23 02:54:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:13,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:13,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:13,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:13,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:13,236 INFO L87 Difference]: Start difference. First operand 8867 states and 10861 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:13,603 INFO L93 Difference]: Finished difference Result 21793 states and 26689 transitions. [2021-11-23 02:54:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-23 02:54:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:13,649 INFO L225 Difference]: With dead ends: 21793 [2021-11-23 02:54:13,650 INFO L226 Difference]: Without dead ends: 13203 [2021-11-23 02:54:13,673 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 02:54:13,674 INFO L933 BasicCegarLoop]: 5760 mSDtfsCounter, 5336 mSDsluCounter, 5702 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 11462 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:13,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 11462 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2021-11-23 02:54:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 12901. [2021-11-23 02:54:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12901 states, 12724 states have (on average 1.2375039295818926) internal successors, (15746), 12832 states have internal predecessors, (15746), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 50 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 02:54:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12901 states to 12901 states and 15870 transitions. [2021-11-23 02:54:14,128 INFO L78 Accepts]: Start accepts. Automaton has 12901 states and 15870 transitions. Word has length 125 [2021-11-23 02:54:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:14,130 INFO L470 AbstractCegarLoop]: Abstraction has 12901 states and 15870 transitions. [2021-11-23 02:54:14,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12901 states and 15870 transitions. [2021-11-23 02:54:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 02:54:14,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:14,133 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] [2021-11-23 02:54:14,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:54:14,134 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -997043680, now seen corresponding path program 1 times [2021-11-23 02:54:14,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:14,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641035177] [2021-11-23 02:54:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:14,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:14,290 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 02:54:14,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:14,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641035177] [2021-11-23 02:54:14,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641035177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:14,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:14,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:14,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290307155] [2021-11-23 02:54:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:14,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:14,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:14,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:14,295 INFO L87 Difference]: Start difference. First operand 12901 states and 15870 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:14,672 INFO L93 Difference]: Finished difference Result 33797 states and 41596 transitions. [2021-11-23 02:54:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-23 02:54:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:14,743 INFO L225 Difference]: With dead ends: 33797 [2021-11-23 02:54:14,743 INFO L226 Difference]: Without dead ends: 21173 [2021-11-23 02:54:14,779 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 02:54:14,782 INFO L933 BasicCegarLoop]: 5835 mSDtfsCounter, 5295 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 11536 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:14,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5295 Valid, 11536 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:54:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21173 states. [2021-11-23 02:54:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21173 to 20873. [2021-11-23 02:54:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20873 states, 20644 states have (on average 1.2385681069560164) internal successors, (25569), 20764 states have internal predecessors, (25569), 98 states have call successors, (98), 40 states have call predecessors, (98), 40 states have return successors, (98), 78 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-23 02:54:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20873 states to 20873 states and 25765 transitions. [2021-11-23 02:54:15,398 INFO L78 Accepts]: Start accepts. Automaton has 20873 states and 25765 transitions. Word has length 127 [2021-11-23 02:54:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:15,399 INFO L470 AbstractCegarLoop]: Abstraction has 20873 states and 25765 transitions. [2021-11-23 02:54:15,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 20873 states and 25765 transitions. [2021-11-23 02:54:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 02:54:15,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:15,401 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] [2021-11-23 02:54:15,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:54:15,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:15,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 195302963, now seen corresponding path program 1 times [2021-11-23 02:54:15,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:15,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560782707] [2021-11-23 02:54:15,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:15,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:15,543 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 02:54:15,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560782707] [2021-11-23 02:54:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560782707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:15,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:15,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:15,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229994705] [2021-11-23 02:54:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:15,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:15,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:15,545 INFO L87 Difference]: Start difference. First operand 20873 states and 25765 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 02:54:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:16,086 INFO L93 Difference]: Finished difference Result 49714 states and 61391 transitions. [2021-11-23 02:54:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2021-11-23 02:54:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:16,171 INFO L225 Difference]: With dead ends: 49714 [2021-11-23 02:54:16,172 INFO L226 Difference]: Without dead ends: 29118 [2021-11-23 02:54:16,220 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 02:54:16,221 INFO L933 BasicCegarLoop]: 5750 mSDtfsCounter, 3327 mSDsluCounter, 5665 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 11415 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:16,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 11415 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2021-11-23 02:54:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 28830. [2021-11-23 02:54:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28830 states, 28499 states have (on average 1.2392364644373486) internal successors, (35317), 28643 states have internal predecessors, (35317), 168 states have call successors, (168), 72 states have call predecessors, (168), 72 states have return successors, (168), 132 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-23 02:54:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28830 states to 28830 states and 35653 transitions. [2021-11-23 02:54:17,076 INFO L78 Accepts]: Start accepts. Automaton has 28830 states and 35653 transitions. Word has length 126 [2021-11-23 02:54:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:17,076 INFO L470 AbstractCegarLoop]: Abstraction has 28830 states and 35653 transitions. [2021-11-23 02:54:17,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 02:54:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 28830 states and 35653 transitions. [2021-11-23 02:54:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 02:54:17,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:17,079 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] [2021-11-23 02:54:17,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:54:17,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1115598008, now seen corresponding path program 1 times [2021-11-23 02:54:17,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:17,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300365488] [2021-11-23 02:54:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:17,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:17,173 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 02:54:17,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300365488] [2021-11-23 02:54:17,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300365488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:17,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:17,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:17,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612126023] [2021-11-23 02:54:17,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:17,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:17,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:17,176 INFO L87 Difference]: Start difference. First operand 28830 states and 35653 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:18,050 INFO L93 Difference]: Finished difference Result 81814 states and 101246 transitions. [2021-11-23 02:54:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-23 02:54:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:18,388 INFO L225 Difference]: With dead ends: 81814 [2021-11-23 02:54:18,388 INFO L226 Difference]: Without dead ends: 53261 [2021-11-23 02:54:18,437 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 02:54:18,438 INFO L933 BasicCegarLoop]: 6349 mSDtfsCounter, 5295 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 12049 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:18,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5295 Valid, 12049 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:54:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53261 states. [2021-11-23 02:54:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53261 to 52957. [2021-11-23 02:54:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52957 states, 52458 states have (on average 1.2396583933813718) internal successors, (65030), 52641 states have internal predecessors, (65030), 284 states have call successors, (284), 124 states have call predecessors, (284), 124 states have return successors, (284), 222 states have call predecessors, (284), 284 states have call successors, (284) [2021-11-23 02:54:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52957 states to 52957 states and 65598 transitions. [2021-11-23 02:54:19,649 INFO L78 Accepts]: Start accepts. Automaton has 52957 states and 65598 transitions. Word has length 129 [2021-11-23 02:54:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:19,649 INFO L470 AbstractCegarLoop]: Abstraction has 52957 states and 65598 transitions. [2021-11-23 02:54:19,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:54:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 52957 states and 65598 transitions. [2021-11-23 02:54:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 02:54:19,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:19,651 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] [2021-11-23 02:54:19,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:54:19,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr71ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:19,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1936185937, now seen corresponding path program 1 times [2021-11-23 02:54:19,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:19,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355732615] [2021-11-23 02:54:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:19,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:19,751 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 02:54:19,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355732615] [2021-11-23 02:54:19,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355732615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:19,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:19,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:19,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753480791] [2021-11-23 02:54:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:19,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:19,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:19,756 INFO L87 Difference]: Start difference. First operand 52957 states and 65598 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 02:54:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:21,436 INFO L93 Difference]: Finished difference Result 127021 states and 157433 transitions. [2021-11-23 02:54:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2021-11-23 02:54:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:21,684 INFO L225 Difference]: With dead ends: 127021 [2021-11-23 02:54:21,684 INFO L226 Difference]: Without dead ends: 74341 [2021-11-23 02:54:21,770 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 02:54:21,771 INFO L933 BasicCegarLoop]: 7830 mSDtfsCounter, 3269 mSDsluCounter, 5666 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 13496 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:21,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 13496 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:54:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74341 states. [2021-11-23 02:54:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74341 to 74017. [2021-11-23 02:54:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74017 states, 73176 states have (on average 1.239969388870668) internal successors, (90736), 73443 states have internal predecessors, (90736), 514 states have call successors, (514), 236 states have call predecessors, (514), 236 states have return successors, (514), 396 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-23 02:54:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74017 states to 74017 states and 91764 transitions. [2021-11-23 02:54:23,626 INFO L78 Accepts]: Start accepts. Automaton has 74017 states and 91764 transitions. Word has length 127 [2021-11-23 02:54:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:23,626 INFO L470 AbstractCegarLoop]: Abstraction has 74017 states and 91764 transitions. [2021-11-23 02:54:23,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 02:54:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 74017 states and 91764 transitions. [2021-11-23 02:54:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 02:54:23,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:23,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:23,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:54:23,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2119372419, now seen corresponding path program 1 times [2021-11-23 02:54:23,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:23,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685416301] [2021-11-23 02:54:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:23,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:23,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685416301] [2021-11-23 02:54:23,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685416301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:23,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:23,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:23,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960965571] [2021-11-23 02:54:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:23,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:23,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:23,732 INFO L87 Difference]: Start difference. First operand 74017 states and 91764 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:54:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:26,401 INFO L93 Difference]: Finished difference Result 220483 states and 273521 transitions. [2021-11-23 02:54:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-23 02:54:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:26,929 INFO L225 Difference]: With dead ends: 220483 [2021-11-23 02:54:26,929 INFO L226 Difference]: Without dead ends: 146796 [2021-11-23 02:54:27,078 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 02:54:27,079 INFO L933 BasicCegarLoop]: 10891 mSDtfsCounter, 5162 mSDsluCounter, 5705 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 16596 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:27,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 16596 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:54:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146796 states. [2021-11-23 02:54:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146796 to 146716. [2021-11-23 02:54:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146716 states, 145125 states have (on average 1.2389732988802755) internal successors, (179806), 145569 states have internal predecessors, (179806), 1028 states have call successors, (1028), 472 states have call predecessors, (1028), 472 states have return successors, (1028), 792 states have call predecessors, (1028), 1028 states have call successors, (1028) [2021-11-23 02:54:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146716 states to 146716 states and 181862 transitions. [2021-11-23 02:54:30,809 INFO L78 Accepts]: Start accepts. Automaton has 146716 states and 181862 transitions. Word has length 142 [2021-11-23 02:54:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:30,810 INFO L470 AbstractCegarLoop]: Abstraction has 146716 states and 181862 transitions. [2021-11-23 02:54:30,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:54:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146716 states and 181862 transitions. [2021-11-23 02:54:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 02:54:30,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:30,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:30,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:54:30,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1588788863, now seen corresponding path program 1 times [2021-11-23 02:54:30,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:30,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833925072] [2021-11-23 02:54:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:30,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:54:30,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833925072] [2021-11-23 02:54:30,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833925072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:30,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:30,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:30,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192823040] [2021-11-23 02:54:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:30,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:54:30,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:54:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:54:30,929 INFO L87 Difference]: Start difference. First operand 146716 states and 181862 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:54:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:54:35,688 INFO L93 Difference]: Finished difference Result 365913 states and 453781 transitions. [2021-11-23 02:54:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:54:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-23 02:54:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:54:36,493 INFO L225 Difference]: With dead ends: 365913 [2021-11-23 02:54:36,493 INFO L226 Difference]: Without dead ends: 219527 [2021-11-23 02:54:36,762 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 02:54:36,763 INFO L933 BasicCegarLoop]: 10892 mSDtfsCounter, 5228 mSDsluCounter, 5640 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5228 SdHoareTripleChecker+Valid, 16532 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:54:36,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5228 Valid, 16532 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:54:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219527 states. [2021-11-23 02:54:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219527 to 219168. [2021-11-23 02:54:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219168 states, 216827 states have (on average 1.2389093609190738) internal successors, (268629), 217448 states have internal predecessors, (268629), 1542 states have call successors, (1542), 708 states have call predecessors, (1542), 708 states have return successors, (1542), 1188 states have call predecessors, (1542), 1542 states have call successors, (1542) [2021-11-23 02:54:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219168 states to 219168 states and 271713 transitions. [2021-11-23 02:54:42,913 INFO L78 Accepts]: Start accepts. Automaton has 219168 states and 271713 transitions. Word has length 142 [2021-11-23 02:54:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:54:42,913 INFO L470 AbstractCegarLoop]: Abstraction has 219168 states and 271713 transitions. [2021-11-23 02:54:42,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 02:54:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 219168 states and 271713 transitions. [2021-11-23 02:54:42,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-23 02:54:42,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:54:42,932 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:42,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:54:42,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION (and 88 more)] === [2021-11-23 02:54:42,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:54:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -697951689, now seen corresponding path program 1 times [2021-11-23 02:54:42,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:54:42,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386993304] [2021-11-23 02:54:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:54:42,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:54:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:54:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 02:54:43,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:54:43,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386993304] [2021-11-23 02:54:43,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386993304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:54:43,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:54:43,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:54:43,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296291352] [2021-11-23 02:54:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:54:43,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:54:43,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:54:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:54:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:54:43,141 INFO L87 Difference]: Start difference. First operand 219168 states and 271713 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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)