./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.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 c6dd4cc7485561c07d0768956edf18af5120a26e2ae45a1cf04a069279d5395f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:35:10,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:35:10,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:35:10,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:35:10,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:35:10,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:35:10,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:35:10,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:35:10,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:35:10,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:35:10,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:35:10,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:35:10,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:35:10,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:35:10,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:35:10,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:35:10,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:35:10,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:35:10,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:35:10,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:35:10,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:35:10,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:35:10,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:35:10,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:35:10,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:35:10,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:35:10,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:35:10,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:35:10,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:35:10,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:35:10,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:35:10,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:35:10,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:35:10,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:35:10,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:35:10,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:35:10,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:35:10,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:35:10,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:35:10,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:35:10,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:35:10,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:35:10,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:35:10,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:35:10,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:35:10,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:35:10,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:35:10,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:35:10,406 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:35:10,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:35:10,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:35:10,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:35:10,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:35:10,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:35:10,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:35:10,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:35:10,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:35:10,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:35:10,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:35:10,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:35:10,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:35:10,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:35:10,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:35:10,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:35:10,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:35:10,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:35:10,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6dd4cc7485561c07d0768956edf18af5120a26e2ae45a1cf04a069279d5395f [2021-11-07 14:35:10,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:35:10,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:35:10,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:35:10,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:35:10,651 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:35:10,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-07 14:35:10,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539d1256c/f0631929c37e4af68163e8105029fb77/FLAG46baa6a86 [2021-11-07 14:35:11,511 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:35:11,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-07 14:35:11,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539d1256c/f0631929c37e4af68163e8105029fb77/FLAG46baa6a86 [2021-11-07 14:35:11,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539d1256c/f0631929c37e4af68163e8105029fb77 [2021-11-07 14:35:11,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:35:11,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:35:11,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:35:11,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:35:11,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:35:11,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:35:11" (1/1) ... [2021-11-07 14:35:11,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15668e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:11, skipping insertion in model container [2021-11-07 14:35:11,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:35:11" (1/1) ... [2021-11-07 14:35:11,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:35:12,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:35:16,785 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i[608054,608067] [2021-11-07 14:35:16,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:35:17,299 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:35:17,867 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i[608054,608067] [2021-11-07 14:35:17,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:35:18,646 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:35:18,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18 WrapperNode [2021-11-07 14:35:18,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:35:18,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:35:18,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:35:18,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:35:18,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:18,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:23,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:35:23,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:35:23,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:35:23,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:35:23,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:23,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:24,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:24,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:26,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:27,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:27,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:28,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:35:28,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:35:28,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:35:28,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:35:28,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (1/1) ... [2021-11-07 14:35:28,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:35:28,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:35:28,738 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) [2021-11-07 14:35:28,740 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 [2021-11-07 14:35:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 14:35:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_seqint [2021-11-07 14:35:28,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_seqint [2021-11-07 14:35:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_check_patch [2021-11-07 14:35:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_check_patch [2021-11-07 14:35:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:35:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_shutdown [2021-11-07 14:35:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_shutdown [2021-11-07 14:35:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:35:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_done [2021-11-07 14:35:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_done [2021-11-07 14:35:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_scsiint [2021-11-07 14:35:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_scsiint [2021-11-07 14:35:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:35:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:35:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_queue_recovery_cmd [2021-11-07 14:35:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_queue_recovery_cmd [2021-11-07 14:35:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_search_qinfifo [2021-11-07 14:35:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_search_qinfifo [2021-11-07 14:35:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:35:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:35:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_devreset [2021-11-07 14:35:28,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_devreset [2021-11-07 14:35:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_dev_reset [2021-11-07 14:35:28,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_dev_reset [2021-11-07 14:35:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:35:28,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:35:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 14:35:28,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 14:35:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_pci_dev_resume [2021-11-07 14:35:28,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_pci_dev_resume [2021-11-07 14:35:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_chip_init [2021-11-07 14:35:28,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_chip_init [2021-11-07 14:35:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_resume [2021-11-07 14:35:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_resume [2021-11-07 14:35:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_pci_dev_remove [2021-11-07 14:35:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_pci_dev_remove [2021-11-07 14:35:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_message_phase [2021-11-07 14:35:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_message_phase [2021-11-07 14:35:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_pause_and_flushwork [2021-11-07 14:35:28,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_pause_and_flushwork [2021-11-07 14:35:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:35:28,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:35:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_queue_cmd_complete [2021-11-07 14:35:28,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_queue_cmd_complete [2021-11-07 14:35:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_loadseq [2021-11-07 14:35:28,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_loadseq [2021-11-07 14:35:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:35:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:35:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_abort_scbs [2021-11-07 14:35:28,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_abort_scbs [2021-11-07 14:35:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:35:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:35:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:35:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_abort [2021-11-07 14:35:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_abort [2021-11-07 14:35:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 14:35:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_pci_chip_init [2021-11-07 14:35:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_pci_chip_init [2021-11-07 14:35:28,773 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_run_qoutfifo [2021-11-07 14:35:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_run_qoutfifo [2021-11-07 14:35:28,773 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_parse_msg [2021-11-07 14:35:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_parse_msg [2021-11-07 14:35:28,773 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_proto_violation [2021-11-07 14:35:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_proto_violation [2021-11-07 14:35:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_freeze_devq [2021-11-07 14:35:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_freeze_devq [2021-11-07 14:35:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_bus_reset [2021-11-07 14:35:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_bus_reset [2021-11-07 14:35:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_brkadrint [2021-11-07 14:35:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_brkadrint [2021-11-07 14:35:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_msg_reject [2021-11-07 14:35:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_msg_reject [2021-11-07 14:35:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:35:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_reset [2021-11-07 14:35:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_reset [2021-11-07 14:35:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_search_untagged_queues [2021-11-07 14:35:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_search_untagged_queues [2021-11-07 14:35:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_download_instr [2021-11-07 14:35:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_download_instr [2021-11-07 14:35:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_intr [2021-11-07 14:35:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_intr [2021-11-07 14:35:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_free [2021-11-07 14:35:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_free [2021-11-07 14:35:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_reset_channel [2021-11-07 14:35:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_reset_channel [2021-11-07 14:35:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:48:27,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:48:27,154 INFO L299 CfgBuilder]: Removed 24799 assume(true) statements. [2021-11-07 14:48:27,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:27 BoogieIcfgContainer [2021-11-07 14:48:27,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:48:27,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:48:27,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:48:27,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:48:27,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:35:11" (1/3) ... [2021-11-07 14:48:27,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be585d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:27, skipping insertion in model container [2021-11-07 14:48:27,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:18" (2/3) ... [2021-11-07 14:48:27,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be585d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:27, skipping insertion in model container [2021-11-07 14:48:27,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:27" (3/3) ... [2021-11-07 14:48:27,192 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-07 14:48:27,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:48:27,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 14:48:27,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:48:27,328 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 [2021-11-07 14:48:27,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 14:48:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 33719 states, 33593 states have (on average 1.4014824517012472) internal successors, (47080), 33607 states have internal predecessors, (47080), 89 states have call successors, (89), 35 states have call predecessors, (89), 35 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-07 14:48:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 14:48:27,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:27,710 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] [2021-11-07 14:48:27,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:48:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1384435702, now seen corresponding path program 1 times [2021-11-07 14:48:27,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:27,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167793727] [2021-11-07 14:48:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:27,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:48:29,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:29,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167793727] [2021-11-07 14:48:29,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167793727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:48:29,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:48:29,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:48:29,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915994831] [2021-11-07 14:48:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:48:29,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:48:29,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:48:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:48:29,778 INFO L87 Difference]: Start difference. First operand has 33719 states, 33593 states have (on average 1.4014824517012472) internal successors, (47080), 33607 states have internal predecessors, (47080), 89 states have call successors, (89), 35 states have call predecessors, (89), 35 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-07 14:48:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:31,389 INFO L93 Difference]: Finished difference Result 67434 states and 94600 transitions. [2021-11-07 14:48:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:48:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-07 14:48:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:31,642 INFO L225 Difference]: With dead ends: 67434 [2021-11-07 14:48:31,642 INFO L226 Difference]: Without dead ends: 33672 [2021-11-07 14:48:32,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:48:32,094 INFO L933 BasicCegarLoop]: 47199 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47199 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:32,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47199 Invalid, 0 Unknown, 0 Unchecked, 132.65ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:48:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33672 states. [2021-11-07 14:48:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33672 to 33672. [2021-11-07 14:48:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33672 states, 33547 states have (on average 1.3989626494172356) internal successors, (46931), 33560 states have internal predecessors, (46931), 89 states have call successors, (89), 35 states have call predecessors, (89), 35 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-07 14:48:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 47109 transitions. [2021-11-07 14:48:33,231 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 47109 transitions. Word has length 42 [2021-11-07 14:48:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:33,232 INFO L470 AbstractCegarLoop]: Abstraction has 33672 states and 47109 transitions. [2021-11-07 14:48:33,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-07 14:48:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 47109 transitions. [2021-11-07 14:48:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 14:48:33,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:33,239 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] [2021-11-07 14:48:33,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:48:33,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:48:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 922758800, now seen corresponding path program 1 times [2021-11-07 14:48:33,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:33,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513131986] [2021-11-07 14:48:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:33,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:48:35,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:35,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513131986] [2021-11-07 14:48:35,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513131986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:48:35,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:48:35,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:48:35,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936464776] [2021-11-07 14:48:35,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:48:35,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:48:35,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:48:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:48:35,321 INFO L87 Difference]: Start difference. First operand 33672 states and 47109 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 14:48:37,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:48:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:40,025 INFO L93 Difference]: Finished difference Result 100867 states and 141132 transitions. [2021-11-07 14:48:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:48:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 14:48:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:40,433 INFO L225 Difference]: With dead ends: 100867 [2021-11-07 14:48:40,434 INFO L226 Difference]: Without dead ends: 67225 [2021-11-07 14:48:40,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:48:40,543 INFO L933 BasicCegarLoop]: 47195 mSDtfsCounter, 47054 mSDsluCounter, 46983 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2593.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47054 SdHoareTripleChecker+Valid, 94178 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 150.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2724.66ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:40,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47054 Valid, 94178 Invalid, 15 Unknown, 0 Unchecked, 150.04ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2724.66ms Time] [2021-11-07 14:48:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67225 states. [2021-11-07 14:48:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67225 to 67225. [2021-11-07 14:48:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67225 states, 66976 states have (on average 1.398993669374104) internal successors, (93699), 67002 states have internal predecessors, (93699), 178 states have call successors, (178), 70 states have call predecessors, (178), 70 states have return successors, (178), 174 states have call predecessors, (178), 178 states have call successors, (178) [2021-11-07 14:48:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67225 states to 67225 states and 94055 transitions. [2021-11-07 14:48:42,775 INFO L78 Accepts]: Start accepts. Automaton has 67225 states and 94055 transitions. Word has length 42 [2021-11-07 14:48:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:42,776 INFO L470 AbstractCegarLoop]: Abstraction has 67225 states and 94055 transitions. [2021-11-07 14:48:42,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 14:48:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 67225 states and 94055 transitions. [2021-11-07 14:48:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 14:48:42,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:42,783 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] [2021-11-07 14:48:42,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:48:42,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:48:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash 133818662, now seen corresponding path program 1 times [2021-11-07 14:48:42,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:42,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240673705] [2021-11-07 14:48:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:42,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:48:44,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:44,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240673705] [2021-11-07 14:48:44,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240673705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:48:44,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:48:44,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:48:44,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118790172] [2021-11-07 14:48:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:48:44,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:48:44,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:48:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:48:44,596 INFO L87 Difference]: Start difference. First operand 67225 states and 94055 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-07 14:48:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:45,656 INFO L93 Difference]: Finished difference Result 67225 states and 94055 transitions. [2021-11-07 14:48:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:48:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2021-11-07 14:48:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:45,657 INFO L225 Difference]: With dead ends: 67225 [2021-11-07 14:48:45,658 INFO L226 Difference]: Without dead ends: 0