./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-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 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:18:47,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:18:47,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:18:47,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:18:47,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:18:47,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:18:47,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:18:47,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:18:47,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:18:47,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:18:47,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:18:47,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:18:47,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:18:47,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:18:47,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:18:47,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:18:47,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:18:47,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:18:47,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:18:47,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:18:47,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:18:47,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:18:47,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:18:47,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:18:47,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:18:47,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:18:47,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:18:47,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:18:47,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:18:47,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:18:47,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:18:47,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:18:47,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:18:47,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:18:47,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:18:47,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:18:47,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:18:47,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:18:47,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:18:47,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:18:47,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:18:47,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:18:47,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:18:47,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:18:47,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:18:47,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:18:47,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:18:47,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:18:47,364 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:18:47,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:18:47,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:18:47,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:18:47,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:18:47,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:18:47,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:18:47,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:18:47,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:18:47,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:18:47,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:18:47,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:18:47,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:18:47,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:18:47,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:18:47,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:18:47,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:18:47,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:18:47,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da [2021-11-06 18:18:47,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:18:47,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:18:47,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:18:47,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:18:47,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:18:47,564 INFO L432 ainManager$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-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-06 18:18:47,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b74df42f/aefad711e7b5490eaa954a0386fc3344/FLAGc6c57c3df [2021-11-06 18:18:48,357 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:18:48,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-06 18:18:48,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b74df42f/aefad711e7b5490eaa954a0386fc3344/FLAGc6c57c3df [2021-11-06 18:18:48,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b74df42f/aefad711e7b5490eaa954a0386fc3344 [2021-11-06 18:18:48,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:18:48,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:18:48,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:18:48,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:18:48,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:18:48,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:18:48" (1/1) ... [2021-11-06 18:18:48,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fbebc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:48, skipping insertion in model container [2021-11-06 18:18:48,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:18:48" (1/1) ... [2021-11-06 18:18:48,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:18:49,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:18:51,567 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-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2021-11-06 18:18:51,569 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-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2021-11-06 18:18:51,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:18:51,624 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:18:51,888 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-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2021-11-06 18:18:51,889 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-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2021-11-06 18:18:51,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:18:51,994 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:18:51,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51 WrapperNode [2021-11-06 18:18:51,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:18:51,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:18:51,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:18:51,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:18:52,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:52,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:52,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:18:52,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:18:52,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:18:52,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:18:52,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:52,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:52,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:52,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:53,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:53,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:53,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:53,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:18:53,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:18:53,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:18:53,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:18:53,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (1/1) ... [2021-11-06 18:18:53,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:18:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:18:53,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:18:53,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:18:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 18:18:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 18:18:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:18:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:18:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:18:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:18:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-06 18:18:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-06 18:18:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:18:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-06 18:18:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-06 18:18:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:18:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:18:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:18:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:18:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:18:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-06 18:18:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-06 18:18:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-06 18:18:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-06 18:18:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-06 18:18:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-06 18:18:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:18:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-06 18:18:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-06 18:18:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-06 18:18:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:18:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 18:18:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 18:19:09,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:19:09,100 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:19:09,100 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 18:19:09,100 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:19:09,101 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:19:09,101 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:19:09,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:19:09,157 INFO L299 CfgBuilder]: Removed 5315 assume(true) statements. [2021-11-06 18:19:09,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:09 BoogieIcfgContainer [2021-11-06 18:19:09,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:19:09,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:19:09,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:19:09,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:19:09,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:18:48" (1/3) ... [2021-11-06 18:19:09,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721589fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:09, skipping insertion in model container [2021-11-06 18:19:09,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:18:51" (2/3) ... [2021-11-06 18:19:09,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721589fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:09, skipping insertion in model container [2021-11-06 18:19:09,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:09" (3/3) ... [2021-11-06 18:19:09,169 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-06 18:19:09,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:19:09,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2021-11-06 18:19:09,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:19:09,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:19:09,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-11-06 18:19:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 5289 states, 5223 states have (on average 1.389048439594103) internal successors, (7255), 5264 states have internal predecessors, (7255), 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) [2021-11-06 18:19:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 18:19:09,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:09,342 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:09,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 549224019, now seen corresponding path program 1 times [2021-11-06 18:19:09,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:09,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091707812] [2021-11-06 18:19:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:09,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:09,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:09,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091707812] [2021-11-06 18:19:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091707812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:09,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:09,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742568873] [2021-11-06 18:19:09,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:09,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:09,990 INFO L87 Difference]: Start difference. First operand has 5289 states, 5223 states have (on average 1.389048439594103) internal successors, (7255), 5264 states have internal predecessors, (7255), 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 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:12,473 INFO L93 Difference]: Finished difference Result 13136 states and 18162 transitions. [2021-11-06 18:19:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2021-11-06 18:19:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:12,515 INFO L225 Difference]: With dead ends: 13136 [2021-11-06 18:19:12,515 INFO L226 Difference]: Without dead ends: 7618 [2021-11-06 18:19:12,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:12,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2021-11-06 18:19:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 7574. [2021-11-06 18:19:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7574 states, 7480 states have (on average 1.345187165775401) internal successors, (10062), 7527 states have internal predecessors, (10062), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 34 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-06 18:19:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7574 states to 7574 states and 10146 transitions. [2021-11-06 18:19:12,749 INFO L78 Accepts]: Start accepts. Automaton has 7574 states and 10146 transitions. Word has length 123 [2021-11-06 18:19:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:12,750 INFO L470 AbstractCegarLoop]: Abstraction has 7574 states and 10146 transitions. [2021-11-06 18:19:12,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7574 states and 10146 transitions. [2021-11-06 18:19:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 18:19:12,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:12,755 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:19:12,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1561698784, now seen corresponding path program 1 times [2021-11-06 18:19:12,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:12,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597931817] [2021-11-06 18:19:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:12,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:13,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:13,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597931817] [2021-11-06 18:19:13,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597931817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:13,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 18:19:13,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142271581] [2021-11-06 18:19:13,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:19:13,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:19:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:13,048 INFO L87 Difference]: Start difference. First operand 7574 states and 10146 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:15,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:15,978 INFO L93 Difference]: Finished difference Result 21601 states and 28891 transitions. [2021-11-06 18:19:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:19:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 124 [2021-11-06 18:19:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:16,028 INFO L225 Difference]: With dead ends: 21601 [2021-11-06 18:19:16,028 INFO L226 Difference]: Without dead ends: 14303 [2021-11-06 18:19:16,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14303 states. [2021-11-06 18:19:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14303 to 14210. [2021-11-06 18:19:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14210 states, 14008 states have (on average 1.3385208452312964) internal successors, (18750), 14079 states have internal predecessors, (18750), 118 states have call successors, (118), 48 states have call predecessors, (118), 48 states have return successors, (118), 94 states have call predecessors, (118), 118 states have call successors, (118) [2021-11-06 18:19:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14210 states to 14210 states and 18986 transitions. [2021-11-06 18:19:16,558 INFO L78 Accepts]: Start accepts. Automaton has 14210 states and 18986 transitions. Word has length 124 [2021-11-06 18:19:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:16,558 INFO L470 AbstractCegarLoop]: Abstraction has 14210 states and 18986 transitions. [2021-11-06 18:19:16,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 14210 states and 18986 transitions. [2021-11-06 18:19:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:19:16,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:16,567 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:16,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:19:16,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1898243407, now seen corresponding path program 1 times [2021-11-06 18:19:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:16,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601562553] [2021-11-06 18:19:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:16,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:16,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:16,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601562553] [2021-11-06 18:19:16,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601562553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:16,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:16,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:16,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396828359] [2021-11-06 18:19:16,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:16,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:16,799 INFO L87 Difference]: Start difference. First operand 14210 states and 18986 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) [2021-11-06 18:19:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:19,336 INFO L93 Difference]: Finished difference Result 28835 states and 38545 transitions. [2021-11-06 18:19:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:19,336 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 [2021-11-06 18:19:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:19,400 INFO L225 Difference]: With dead ends: 28835 [2021-11-06 18:19:19,400 INFO L226 Difference]: Without dead ends: 14901 [2021-11-06 18:19:19,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2021-11-06 18:19:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 14899. [2021-11-06 18:19:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14899 states, 14671 states have (on average 1.3352873014791085) internal successors, (19590), 14748 states have internal predecessors, (19590), 136 states have call successors, (136), 56 states have call predecessors, (136), 56 states have return successors, (136), 108 states have call predecessors, (136), 136 states have call successors, (136) [2021-11-06 18:19:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14899 states to 14899 states and 19862 transitions. [2021-11-06 18:19:19,812 INFO L78 Accepts]: Start accepts. Automaton has 14899 states and 19862 transitions. Word has length 138 [2021-11-06 18:19:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:19,813 INFO L470 AbstractCegarLoop]: Abstraction has 14899 states and 19862 transitions. [2021-11-06 18:19:19,813 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) [2021-11-06 18:19:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 14899 states and 19862 transitions. [2021-11-06 18:19:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 18:19:19,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:19,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:19,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:19:19,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1076035440, now seen corresponding path program 1 times [2021-11-06 18:19:19,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:19,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697368692] [2021-11-06 18:19:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:19,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:20,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:20,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697368692] [2021-11-06 18:19:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697368692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:20,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:20,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 18:19:20,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236737369] [2021-11-06 18:19:20,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 18:19:20,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 18:19:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:19:20,077 INFO L87 Difference]: Start difference. First operand 14899 states and 19862 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2021-11-06 18:19:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:23,502 INFO L93 Difference]: Finished difference Result 56599 states and 75820 transitions. [2021-11-06 18:19:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:19:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 145 [2021-11-06 18:19:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:23,632 INFO L225 Difference]: With dead ends: 56599 [2021-11-06 18:19:23,633 INFO L226 Difference]: Without dead ends: 41976 [2021-11-06 18:19:23,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:19:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41976 states. [2021-11-06 18:19:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41976 to 41700. [2021-11-06 18:19:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41700 states, 41166 states have (on average 1.3440946412087644) internal successors, (55331), 41315 states have internal predecessors, (55331), 346 states have call successors, (346), 152 states have call predecessors, (346), 152 states have return successors, (346), 270 states have call predecessors, (346), 346 states have call successors, (346) [2021-11-06 18:19:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41700 states to 41700 states and 56023 transitions. [2021-11-06 18:19:25,066 INFO L78 Accepts]: Start accepts. Automaton has 41700 states and 56023 transitions. Word has length 145 [2021-11-06 18:19:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:25,067 INFO L470 AbstractCegarLoop]: Abstraction has 41700 states and 56023 transitions. [2021-11-06 18:19:25,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2021-11-06 18:19:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 41700 states and 56023 transitions. [2021-11-06 18:19:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 18:19:25,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:25,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:25,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:19:25,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1295073280, now seen corresponding path program 1 times [2021-11-06 18:19:25,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:25,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092283196] [2021-11-06 18:19:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:25,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:25,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:25,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092283196] [2021-11-06 18:19:25,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092283196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:25,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:25,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:25,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455975983] [2021-11-06 18:19:25,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:25,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:25,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:25,241 INFO L87 Difference]: Start difference. First operand 41700 states and 56023 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-11-06 18:19:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:28,844 INFO L93 Difference]: Finished difference Result 122222 states and 164572 transitions. [2021-11-06 18:19:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 147 [2021-11-06 18:19:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:29,305 INFO L225 Difference]: With dead ends: 122222 [2021-11-06 18:19:29,306 INFO L226 Difference]: Without dead ends: 80798 [2021-11-06 18:19:29,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80798 states. [2021-11-06 18:19:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80798 to 80678. [2021-11-06 18:19:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80678 states, 79708 states have (on average 1.3474682591458824) internal successors, (107404), 79965 states have internal predecessors, (107404), 638 states have call successors, (638), 296 states have call predecessors, (638), 296 states have return successors, (638), 490 states have call predecessors, (638), 638 states have call successors, (638) [2021-11-06 18:19:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80678 states to 80678 states and 108680 transitions. [2021-11-06 18:19:31,646 INFO L78 Accepts]: Start accepts. Automaton has 80678 states and 108680 transitions. Word has length 147 [2021-11-06 18:19:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:31,647 INFO L470 AbstractCegarLoop]: Abstraction has 80678 states and 108680 transitions. [2021-11-06 18:19:31,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-11-06 18:19:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 80678 states and 108680 transitions. [2021-11-06 18:19:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 18:19:31,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:31,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:31,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:19:31,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1861881626, now seen corresponding path program 1 times [2021-11-06 18:19:31,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:31,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142004957] [2021-11-06 18:19:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:31,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:32,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:32,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142004957] [2021-11-06 18:19:32,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142004957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:32,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:32,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:32,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893334325] [2021-11-06 18:19:32,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:32,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:32,160 INFO L87 Difference]: Start difference. First operand 80678 states and 108680 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2021-11-06 18:19:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:37,003 INFO L93 Difference]: Finished difference Result 233282 states and 315042 transitions. [2021-11-06 18:19:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:37,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 149 [2021-11-06 18:19:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:37,750 INFO L225 Difference]: With dead ends: 233282 [2021-11-06 18:19:37,751 INFO L226 Difference]: Without dead ends: 152880 [2021-11-06 18:19:37,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152880 states. [2021-11-06 18:19:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152880 to 152772. [2021-11-06 18:19:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152772 states, 151144 states have (on average 1.3513933732070078) internal successors, (204255), 151563 states have internal predecessors, (204255), 1080 states have call successors, (1080), 512 states have call predecessors, (1080), 512 states have return successors, (1080), 824 states have call predecessors, (1080), 1080 states have call successors, (1080) [2021-11-06 18:19:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152772 states to 152772 states and 206415 transitions. [2021-11-06 18:19:42,207 INFO L78 Accepts]: Start accepts. Automaton has 152772 states and 206415 transitions. Word has length 149 [2021-11-06 18:19:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:42,207 INFO L470 AbstractCegarLoop]: Abstraction has 152772 states and 206415 transitions. [2021-11-06 18:19:42,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2021-11-06 18:19:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 152772 states and 206415 transitions. [2021-11-06 18:19:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 18:19:42,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:42,210 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:42,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:19:42,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~X~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2021-11-06 18:19:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2116182261, now seen corresponding path program 1 times [2021-11-06 18:19:42,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:42,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844583759] [2021-11-06 18:19:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:42,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:42,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:42,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844583759] [2021-11-06 18:19:42,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844583759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:42,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:42,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147601044] [2021-11-06 18:19:42,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:42,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:42,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:42,406 INFO L87 Difference]: Start difference. First operand 152772 states and 206415 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:50,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:50,949 INFO L93 Difference]: Finished difference Result 456252 states and 616887 transitions. [2021-11-06 18:19:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:50,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-06 18:19:50,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:52,227 INFO L225 Difference]: With dead ends: 456252 [2021-11-06 18:19:52,227 INFO L226 Difference]: Without dead ends: 303804 [2021-11-06 18:19:52,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303804 states.