./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 5f08f0f0 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-wip.dd.seqcomp-5f08f0f [2021-11-05 20:55:24,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:55:24,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:55:24,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:55:24,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:55:24,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:55:24,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:55:24,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:55:24,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:55:24,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:55:24,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:55:24,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:55:24,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:55:24,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:55:24,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:55:24,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:55:24,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:55:24,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:55:24,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:55:24,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:55:24,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:55:24,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:55:24,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:55:24,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:55:24,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:55:24,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:55:24,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:55:24,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:55:24,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:55:24,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:55:24,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:55:24,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:55:24,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:55:24,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:55:24,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:55:24,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:55:24,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:55:24,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:55:24,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:55:24,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:55:24,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:55:24,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:55:24,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:55:24,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:55:24,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:55:24,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:55:24,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:55:24,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:55:24,207 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:55:24,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:55:24,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:55:24,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:55:24,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:55:24,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:55:24,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:55:24,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:55:24,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:55:24,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:55:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:55:24,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:55:24,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:55:24,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:55:24,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:55:24,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:55:24,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:55:24,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:55:24,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:55:24,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:55:24,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:55:24,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:55:24,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:55:24,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-05 20:55:24,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:55:24,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:55:24,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:55:24,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:55:24,536 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:55:24,537 INFO L432 ainManager$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 [2021-11-05 20:55:24,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315fce996/a96404f7904a42438e0fc423e9696496/FLAG4d15f3cb2 [2021-11-05 20:55:25,418 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:55:25,419 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 [2021-11-05 20:55:25,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315fce996/a96404f7904a42438e0fc423e9696496/FLAG4d15f3cb2 [2021-11-05 20:55:25,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315fce996/a96404f7904a42438e0fc423e9696496 [2021-11-05 20:55:25,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:55:25,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:55:25,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:55:25,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:55:25,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:55:25,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:55:25" (1/1) ... [2021-11-05 20:55:25,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fb5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:25, skipping insertion in model container [2021-11-05 20:55:25,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:55:25" (1/1) ... [2021-11-05 20:55:25,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:55:26,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:55:29,395 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-05 20:55:29,397 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-05 20:55:29,398 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-05 20:55:29,398 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-05 20:55:29,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:55:29,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:55:29,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-05 20:55:29,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-05 20:55:29,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-05 20:55:29,964 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-05 20:55:29,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:55:30,132 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:55:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30 WrapperNode [2021-11-05 20:55:30,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:55:30,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:55:30,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:55:30,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:55:30,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:30,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:30,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:55:30,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:55:30,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:55:30,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:55:30,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:30,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:55:31,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:55:31,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:55:31,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:55:31,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (1/1) ... [2021-11-05 20:55:31,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:55:31,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:55:31,788 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) [2021-11-05 20:55:31,811 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 [2021-11-05 20:55:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 20:55:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 20:55:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:55:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:55:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:55:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:55:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-05 20:55:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-05 20:55:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:55:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-05 20:55:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-05 20:55:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:55:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 20:55:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 20:55:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:55:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:55:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:55:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:55:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:55:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:55:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:55:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-05 20:55:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-05 20:55:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-05 20:55:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-05 20:55:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-05 20:55:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-05 20:55:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:55:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-05 20:55:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-05 20:55:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-05 20:55:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:55:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 20:55:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 20:55:46,378 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:55:46,378 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:55:46,379 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:55:46,379 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:55:46,379 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:55:46,380 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:55:46,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:55:46,421 INFO L299 CfgBuilder]: Removed 5147 assume(true) statements. [2021-11-05 20:55:46,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:55:46 BoogieIcfgContainer [2021-11-05 20:55:46,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:55:46,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:55:46,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:55:46,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:55:46,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:55:25" (1/3) ... [2021-11-05 20:55:46,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7cbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:55:46, skipping insertion in model container [2021-11-05 20:55:46,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:55:30" (2/3) ... [2021-11-05 20:55:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7cbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:55:46, skipping insertion in model container [2021-11-05 20:55:46,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:55:46" (3/3) ... [2021-11-05 20:55:46,434 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-05 20:55:46,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:55:46,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2021-11-05 20:55:46,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:55:46,497 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 [2021-11-05 20:55:46,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2021-11-05 20:55:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 4764 states, 4643 states have (on average 1.323066982554383) internal successors, (6143), 4739 states have internal predecessors, (6143), 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) [2021-11-05 20:55:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 20:55:46,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:55:46,576 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] [2021-11-05 20:55:46,577 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)] === [2021-11-05 20:55:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:55:46,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2070864798, now seen corresponding path program 1 times [2021-11-05 20:55:46,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:55:46,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401421215] [2021-11-05 20:55:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:55:46,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:55:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:55:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:55:47,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:55:47,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401421215] [2021-11-05 20:55:47,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401421215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:55:47,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:55:47,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:55:47,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133165597] [2021-11-05 20:55:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:55:47,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:55:47,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:55:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:55:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:47,321 INFO L87 Difference]: Start difference. First operand has 4764 states, 4643 states have (on average 1.323066982554383) internal successors, (6143), 4739 states have internal predecessors, (6143), 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 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-05 20:55:49,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:55:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:55:49,965 INFO L93 Difference]: Finished difference Result 13329 states and 17368 transitions. [2021-11-05 20:55:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:55:49,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2021-11-05 20:55:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:55:50,015 INFO L225 Difference]: With dead ends: 13329 [2021-11-05 20:55:50,015 INFO L226 Difference]: Without dead ends: 8359 [2021-11-05 20:55:50,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:50,038 INFO L933 BasicCegarLoop]: 6075 mSDtfsCounter, 5350 mSDsluCounter, 6023 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2089.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 12098 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.99ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2272.38ms IncrementalHoareTripleChecker+Time [2021-11-05 20:55:50,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 12098 Invalid, 44 Unknown, 0 Unchecked, 38.99ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2272.38ms Time] [2021-11-05 20:55:50,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2021-11-05 20:55:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 8279. [2021-11-05 20:55:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8279 states, 8128 states have (on average 1.2530757874015748) internal successors, (10185), 8230 states have internal predecessors, (10185), 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) [2021-11-05 20:55:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 10273 transitions. [2021-11-05 20:55:50,325 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 10273 transitions. Word has length 115 [2021-11-05 20:55:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:55:50,326 INFO L470 AbstractCegarLoop]: Abstraction has 8279 states and 10273 transitions. [2021-11-05 20:55:50,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-05 20:55:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 10273 transitions. [2021-11-05 20:55:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 20:55:50,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:55:50,332 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] [2021-11-05 20:55:50,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:55:50,332 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)] === [2021-11-05 20:55:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:55:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash -655814456, now seen corresponding path program 1 times [2021-11-05 20:55:50,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:55:50,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371532981] [2021-11-05 20:55:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:55:50,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:55:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:55:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:55:50,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:55:50,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371532981] [2021-11-05 20:55:50,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371532981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:55:50,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:55:50,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:55:50,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709102014] [2021-11-05 20:55:50,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:55:50,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:55:50,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:55:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:55:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:50,760 INFO L87 Difference]: Start difference. First operand 8279 states and 10273 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 20:55:52,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:55:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:55:53,312 INFO L93 Difference]: Finished difference Result 20326 states and 25222 transitions. [2021-11-05 20:55:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:55:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 124 [2021-11-05 20:55:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:55:53,366 INFO L225 Difference]: With dead ends: 20326 [2021-11-05 20:55:53,367 INFO L226 Difference]: Without dead ends: 12323 [2021-11-05 20:55:53,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:53,393 INFO L933 BasicCegarLoop]: 5458 mSDtfsCounter, 5041 mSDsluCounter, 5404 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5041 SdHoareTripleChecker+Valid, 10862 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2239.26ms IncrementalHoareTripleChecker+Time [2021-11-05 20:55:53,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5041 Valid, 10862 Invalid, 44 Unknown, 0 Unchecked, 20.08ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2239.26ms Time] [2021-11-05 20:55:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12323 states. [2021-11-05 20:55:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12323 to 12025. [2021-11-05 20:55:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 11848 states have (on average 1.2550641458474003) internal successors, (14870), 11956 states have internal predecessors, (14870), 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) [2021-11-05 20:55:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 14994 transitions. [2021-11-05 20:55:53,737 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 14994 transitions. Word has length 124 [2021-11-05 20:55:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:55:53,738 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 14994 transitions. [2021-11-05 20:55:53,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 20:55:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 14994 transitions. [2021-11-05 20:55:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 20:55:53,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:55:53,740 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] [2021-11-05 20:55:53,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:55:53,741 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)] === [2021-11-05 20:55:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:55:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1736507055, now seen corresponding path program 1 times [2021-11-05 20:55:53,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:55:53,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925698668] [2021-11-05 20:55:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:55:53,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:55:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:55:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:55:53,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:55:53,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925698668] [2021-11-05 20:55:54,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925698668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:55:54,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:55:54,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:55:54,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021265455] [2021-11-05 20:55:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:55:54,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:55:54,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:55:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:55:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:54,005 INFO L87 Difference]: Start difference. First operand 12025 states and 14994 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-05 20:55:56,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:55:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:55:56,660 INFO L93 Difference]: Finished difference Result 31475 states and 39274 transitions. [2021-11-05 20:55:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:55:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 126 [2021-11-05 20:55:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:55:56,745 INFO L225 Difference]: With dead ends: 31475 [2021-11-05 20:55:56,745 INFO L226 Difference]: Without dead ends: 19726 [2021-11-05 20:55:56,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:56,781 INFO L933 BasicCegarLoop]: 5533 mSDtfsCounter, 5003 mSDsluCounter, 5403 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2089.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2277.09ms IncrementalHoareTripleChecker+Time [2021-11-05 20:55:56,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 10936 Invalid, 44 Unknown, 0 Unchecked, 20.60ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2277.09ms Time] [2021-11-05 20:55:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19726 states. [2021-11-05 20:55:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19726 to 19430. [2021-11-05 20:55:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19430 states, 19201 states have (on average 1.2564970574449248) internal successors, (24126), 19321 states have internal predecessors, (24126), 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) [2021-11-05 20:55:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19430 states to 19430 states and 24322 transitions. [2021-11-05 20:55:57,297 INFO L78 Accepts]: Start accepts. Automaton has 19430 states and 24322 transitions. Word has length 126 [2021-11-05 20:55:57,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:55:57,299 INFO L470 AbstractCegarLoop]: Abstraction has 19430 states and 24322 transitions. [2021-11-05 20:55:57,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-05 20:55:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 19430 states and 24322 transitions. [2021-11-05 20:55:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 20:55:57,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:55:57,303 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] [2021-11-05 20:55:57,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:55:57,303 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)] === [2021-11-05 20:55:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:55:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash -77363604, now seen corresponding path program 1 times [2021-11-05 20:55:57,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:55:57,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466791068] [2021-11-05 20:55:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:55:57,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:55:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:55:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:55:57,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:55:57,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466791068] [2021-11-05 20:55:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466791068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:55:57,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:55:57,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:55:57,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723327213] [2021-11-05 20:55:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:55:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:55:57,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:55:57,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:55:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:55:57,717 INFO L87 Difference]: Start difference. First operand 19430 states and 24322 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-05 20:55:59,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:56:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:00,486 INFO L93 Difference]: Finished difference Result 46207 states and 57884 transitions. [2021-11-05 20:56:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:56:00,486 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), 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 125 [2021-11-05 20:56:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:00,574 INFO L225 Difference]: With dead ends: 46207 [2021-11-05 20:56:00,574 INFO L226 Difference]: Without dead ends: 27053 [2021-11-05 20:56:00,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:00,627 INFO L933 BasicCegarLoop]: 5451 mSDtfsCounter, 3136 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2116.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 10818 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.79ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2296.83ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:00,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 10818 Invalid, 80 Unknown, 0 Unchecked, 14.79ms Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2296.83ms Time] [2021-11-05 20:56:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27053 states. [2021-11-05 20:56:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27053 to 26769. [2021-11-05 20:56:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26769 states, 26438 states have (on average 1.257886375671382) internal successors, (33256), 26582 states have internal predecessors, (33256), 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) [2021-11-05 20:56:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26769 states to 26769 states and 33592 transitions. [2021-11-05 20:56:01,327 INFO L78 Accepts]: Start accepts. Automaton has 26769 states and 33592 transitions. Word has length 125 [2021-11-05 20:56:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:56:01,328 INFO L470 AbstractCegarLoop]: Abstraction has 26769 states and 33592 transitions. [2021-11-05 20:56:01,328 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), 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) [2021-11-05 20:56:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26769 states and 33592 transitions. [2021-11-05 20:56:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 20:56:01,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:56:01,330 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] [2021-11-05 20:56:01,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:56:01,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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)] === [2021-11-05 20:56:01,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:56:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -974843764, now seen corresponding path program 1 times [2021-11-05 20:56:01,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:56:01,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200616470] [2021-11-05 20:56:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:56:01,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:56:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:56:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:56:01,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:56:01,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200616470] [2021-11-05 20:56:01,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200616470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:56:01,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:56:01,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:56:01,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559450267] [2021-11-05 20:56:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:56:01,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:56:01,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:56:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:56:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:01,733 INFO L87 Difference]: Start difference. First operand 26769 states and 33592 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) [2021-11-05 20:56:03,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:56:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:04,762 INFO L93 Difference]: Finished difference Result 63173 states and 79357 transitions. [2021-11-05 20:56:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:56:04,762 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 [2021-11-05 20:56:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:04,871 INFO L225 Difference]: With dead ends: 63173 [2021-11-05 20:56:04,871 INFO L226 Difference]: Without dead ends: 36680 [2021-11-05 20:56:04,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:04,936 INFO L933 BasicCegarLoop]: 7425 mSDtfsCounter, 3081 mSDsluCounter, 5368 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2122.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 12793 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.37ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2285.74ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:04,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 12793 Invalid, 80 Unknown, 0 Unchecked, 15.37ms Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2285.74ms Time] [2021-11-05 20:56:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36680 states. [2021-11-05 20:56:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36680 to 36392. [2021-11-05 20:56:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36392 states, 35863 states have (on average 1.2593759585087694) internal successors, (45165), 36055 states have internal predecessors, (45165), 302 states have call successors, (302), 136 states have call predecessors, (302), 136 states have return successors, (302), 234 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-05 20:56:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36392 states to 36392 states and 45769 transitions. [2021-11-05 20:56:05,975 INFO L78 Accepts]: Start accepts. Automaton has 36392 states and 45769 transitions. Word has length 126 [2021-11-05 20:56:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:56:05,976 INFO L470 AbstractCegarLoop]: Abstraction has 36392 states and 45769 transitions. [2021-11-05 20:56:05,976 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) [2021-11-05 20:56:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36392 states and 45769 transitions. [2021-11-05 20:56:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 20:56:05,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:56:05,979 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] [2021-11-05 20:56:05,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:56:05,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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)] === [2021-11-05 20:56:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:56:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2107975688, now seen corresponding path program 1 times [2021-11-05 20:56:05,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:56:05,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970235197] [2021-11-05 20:56:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:56:05,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:56:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:56:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:56:06,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:56:06,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970235197] [2021-11-05 20:56:06,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970235197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:56:06,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:56:06,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:56:06,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816798355] [2021-11-05 20:56:06,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:56:06,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:56:06,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:56:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:56:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:06,204 INFO L87 Difference]: Start difference. First operand 36392 states and 45769 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-05 20:56:08,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:56:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:09,520 INFO L93 Difference]: Finished difference Result 104940 states and 132072 transitions. [2021-11-05 20:56:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:56:09,522 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), 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 128 [2021-11-05 20:56:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:09,744 INFO L225 Difference]: With dead ends: 104940 [2021-11-05 20:56:09,744 INFO L226 Difference]: Without dead ends: 68824 [2021-11-05 20:56:09,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:09,865 INFO L933 BasicCegarLoop]: 6137 mSDtfsCounter, 5003 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2082.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 11539 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2233.09ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:09,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 11539 Invalid, 44 Unknown, 0 Unchecked, 12.04ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2233.09ms Time] [2021-11-05 20:56:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68824 states. [2021-11-05 20:56:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68824 to 68512. [2021-11-05 20:56:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68512 states, 67671 states have (on average 1.2594907715269466) internal successors, (85231), 67938 states have internal predecessors, (85231), 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) [2021-11-05 20:56:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68512 states to 68512 states and 86259 transitions. [2021-11-05 20:56:11,984 INFO L78 Accepts]: Start accepts. Automaton has 68512 states and 86259 transitions. Word has length 128 [2021-11-05 20:56:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:56:11,984 INFO L470 AbstractCegarLoop]: Abstraction has 68512 states and 86259 transitions. [2021-11-05 20:56:11,984 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), 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) [2021-11-05 20:56:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 68512 states and 86259 transitions. [2021-11-05 20:56:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 20:56:11,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:56:11,989 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] [2021-11-05 20:56:11,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:56:11,990 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)] === [2021-11-05 20:56:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:56:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1619497385, now seen corresponding path program 1 times [2021-11-05 20:56:11,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:56:11,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365111586] [2021-11-05 20:56:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:56:11,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:56:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:56:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:56:12,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:56:12,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365111586] [2021-11-05 20:56:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365111586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:56:12,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:56:12,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:56:12,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592786700] [2021-11-05 20:56:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:56:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:56:12,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:56:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:56:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:12,394 INFO L87 Difference]: Start difference. First operand 68512 states and 86259 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-05 20:56:14,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:56:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:17,007 INFO L93 Difference]: Finished difference Result 204008 states and 257046 transitions. [2021-11-05 20:56:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:56:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2021-11-05 20:56:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:17,606 INFO L225 Difference]: With dead ends: 204008 [2021-11-05 20:56:17,606 INFO L226 Difference]: Without dead ends: 135820 [2021-11-05 20:56:17,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:17,745 INFO L933 BasicCegarLoop]: 10303 mSDtfsCounter, 4873 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2067.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4873 SdHoareTripleChecker+Valid, 15709 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2244.70ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:17,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4873 Valid, 15709 Invalid, 40 Unknown, 0 Unchecked, 13.82ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2244.70ms Time] [2021-11-05 20:56:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135820 states. [2021-11-05 20:56:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135820 to 135740. [2021-11-05 20:56:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135740 states, 134149 states have (on average 1.2585259673944644) internal successors, (168830), 134593 states have internal predecessors, (168830), 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) [2021-11-05 20:56:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135740 states to 135740 states and 170886 transitions. [2021-11-05 20:56:21,174 INFO L78 Accepts]: Start accepts. Automaton has 135740 states and 170886 transitions. Word has length 138 [2021-11-05 20:56:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:56:21,175 INFO L470 AbstractCegarLoop]: Abstraction has 135740 states and 170886 transitions. [2021-11-05 20:56:21,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-05 20:56:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 135740 states and 170886 transitions. [2021-11-05 20:56:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 20:56:21,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:56:21,177 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] [2021-11-05 20:56:21,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:56:21,178 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)] === [2021-11-05 20:56:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:56:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2012524395, now seen corresponding path program 1 times [2021-11-05 20:56:21,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:56:21,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902335308] [2021-11-05 20:56:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:56:21,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:56:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:56:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:56:21,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:56:21,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902335308] [2021-11-05 20:56:21,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902335308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:56:21,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:56:21,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:56:21,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008760179] [2021-11-05 20:56:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:56:21,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:56:21,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:56:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:56:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:21,652 INFO L87 Difference]: Start difference. First operand 135740 states and 170886 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-05 20:56:23,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:56:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:28,025 INFO L93 Difference]: Finished difference Result 338496 states and 426364 transitions. [2021-11-05 20:56:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:56:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2021-11-05 20:56:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:28,752 INFO L225 Difference]: With dead ends: 338496 [2021-11-05 20:56:28,752 INFO L226 Difference]: Without dead ends: 203080 [2021-11-05 20:56:28,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:56:28,979 INFO L933 BasicCegarLoop]: 10303 mSDtfsCounter, 4939 mSDsluCounter, 5341 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2077.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4939 SdHoareTripleChecker+Valid, 15644 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.63ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2261.38ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:28,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4939 Valid, 15644 Invalid, 42 Unknown, 0 Unchecked, 13.63ms Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 1 Unknown, 0 Unchecked, 2261.38ms Time] [2021-11-05 20:56:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203080 states. [2021-11-05 20:56:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203080 to 202721. [2021-11-05 20:56:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202721 states, 200380 states have (on average 1.2585188142529196) internal successors, (252182), 201001 states have internal predecessors, (252182), 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) [2021-11-05 20:56:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202721 states to 202721 states and 255266 transitions. [2021-11-05 20:56:34,540 INFO L78 Accepts]: Start accepts. Automaton has 202721 states and 255266 transitions. Word has length 138 [2021-11-05 20:56:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:56:34,540 INFO L470 AbstractCegarLoop]: Abstraction has 202721 states and 255266 transitions. [2021-11-05 20:56:34,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-05 20:56:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 202721 states and 255266 transitions. [2021-11-05 20:56:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 20:56:34,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:56:34,543 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] [2021-11-05 20:56:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 20:56:34,543 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)] === [2021-11-05 20:56:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:56:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash -491606047, now seen corresponding path program 1 times [2021-11-05 20:56:34,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:56:34,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900160641] [2021-11-05 20:56:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:56:34,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:56:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:56:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 20:56:34,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:56:34,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900160641] [2021-11-05 20:56:34,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900160641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:56:34,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:56:34,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:56:34,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592474874] [2021-11-05 20:56:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:56:34,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:56:34,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:56:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:56:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:56:34,829 INFO L87 Difference]: Start difference. First operand 202721 states and 255266 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-11-05 20:56:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:56:38,856 INFO L93 Difference]: Finished difference Result 202721 states and 255266 transitions. [2021-11-05 20:56:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:56:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2021-11-05 20:56:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:56:39,401 INFO L225 Difference]: With dead ends: 202721 [2021-11-05 20:56:39,401 INFO L226 Difference]: Without dead ends: 202715 [2021-11-05 20:56:39,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:56:39,474 INFO L933 BasicCegarLoop]: 5426 mSDtfsCounter, 5303 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5303 SdHoareTripleChecker+Valid, 10711 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.63ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.15ms IncrementalHoareTripleChecker+Time [2021-11-05 20:56:39,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5303 Valid, 10711 Invalid, 151 Unknown, 0 Unchecked, 20.63ms Time], IncrementalHoareTripleChecker [49 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 158.15ms Time] [2021-11-05 20:56:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202715 states.