./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-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-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 a8c555632fab0930c52086cc6bea4b7b2afb397d1c46adaad1f0d2afa54388da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:53:35,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:53:35,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:53:35,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:53:35,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:53:35,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:53:35,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:53:35,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:53:35,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:53:35,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:53:35,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:53:35,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:53:35,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:53:35,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:53:35,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:53:35,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:53:35,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:53:35,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:53:35,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:53:35,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:53:35,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:53:35,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:53:35,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:53:35,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:53:35,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:53:35,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:53:35,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:53:35,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:53:35,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:53:35,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:53:35,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:53:35,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:53:35,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:53:35,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:53:35,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:53:35,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:53:35,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:53:35,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:53:35,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:53:35,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:53:35,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:53:35,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:53:35,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:53:35,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:53:35,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:53:35,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:53:35,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:53:35,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:53:35,308 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:53:35,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:53:35,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:53:35,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:53:35,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:53:35,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:53:35,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:53:35,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:53:35,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:53:35,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:53:35,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:53:35,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:53:35,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:53:35,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8c555632fab0930c52086cc6bea4b7b2afb397d1c46adaad1f0d2afa54388da [2021-11-06 16:53:35,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:53:35,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:53:35,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:53:35,544 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:53:35,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:53:35,546 INFO L432 ainManager$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-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-06 16:53:35,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf5f0fa6/a6e7f80d1fff4fa1a5df6b3da6e4139f/FLAG773347ed1 [2021-11-06 16:53:36,341 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:53:36,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-06 16:53:36,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf5f0fa6/a6e7f80d1fff4fa1a5df6b3da6e4139f/FLAG773347ed1 [2021-11-06 16:53:36,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf5f0fa6/a6e7f80d1fff4fa1a5df6b3da6e4139f [2021-11-06 16:53:36,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:53:36,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:53:36,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:53:36,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:53:36,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:53:36,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:53:36" (1/1) ... [2021-11-06 16:53:36,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548d2517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:36, skipping insertion in model container [2021-11-06 16:53:36,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:53:36" (1/1) ... [2021-11-06 16:53:36,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:53:36,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:53:40,927 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-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i[619583,619596] [2021-11-06 16:53:41,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:53:41,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:53:42,101 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-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i[619583,619596] [2021-11-06 16:53:42,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:53:42,509 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:53:42,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42 WrapperNode [2021-11-06 16:53:42,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:53:42,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:53:42,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:53:42,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:53:42,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:42,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:46,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:53:46,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:53:46,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:53:46,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:53:46,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:46,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:46,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:46,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:48,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:49,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:49,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:50,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:53:50,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:53:50,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:53:50,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:53:50,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (1/1) ... [2021-11-06 16:53:50,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:53:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:53:50,367 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 16:53:50,377 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 16:53:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 16:53:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_seqint [2021-11-06 16:53:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_seqint [2021-11-06 16:53:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_check_patch [2021-11-06 16:53:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_check_patch [2021-11-06 16:53:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:53:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_shutdown [2021-11-06 16:53:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_shutdown [2021-11-06 16:53:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:53:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_done [2021-11-06 16:53:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_done [2021-11-06 16:53:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_scsiint [2021-11-06 16:53:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_scsiint [2021-11-06 16:53:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:53:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:53:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_queue_recovery_cmd [2021-11-06 16:53:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_queue_recovery_cmd [2021-11-06 16:53:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_search_qinfifo [2021-11-06 16:53:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_search_qinfifo [2021-11-06 16:53:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:53:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:53:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_devreset [2021-11-06 16:53:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_devreset [2021-11-06 16:53:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_dev_reset [2021-11-06 16:53:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_dev_reset [2021-11-06 16:53:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:53:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:53:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:53:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:53:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_pci_dev_resume [2021-11-06 16:53:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_pci_dev_resume [2021-11-06 16:53:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_chip_init [2021-11-06 16:53:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_chip_init [2021-11-06 16:53:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_resume [2021-11-06 16:53:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_resume [2021-11-06 16:53:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_pci_dev_remove [2021-11-06 16:53:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_pci_dev_remove [2021-11-06 16:53:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_message_phase [2021-11-06 16:53:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_message_phase [2021-11-06 16:53:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_pause_and_flushwork [2021-11-06 16:53:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_pause_and_flushwork [2021-11-06 16:53:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:53:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:53:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_queue_cmd_complete [2021-11-06 16:53:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_queue_cmd_complete [2021-11-06 16:53:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_loadseq [2021-11-06 16:53:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_loadseq [2021-11-06 16:53:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:53:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:53:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_abort_scbs [2021-11-06 16:53:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_abort_scbs [2021-11-06 16:53:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:53:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:53:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:53:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_abort [2021-11-06 16:53:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_abort [2021-11-06 16:53:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-06 16:53:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_pci_chip_init [2021-11-06 16:53:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_pci_chip_init [2021-11-06 16:53:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_run_qoutfifo [2021-11-06 16:53:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_run_qoutfifo [2021-11-06 16:53:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_parse_msg [2021-11-06 16:53:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_parse_msg [2021-11-06 16:53:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_proto_violation [2021-11-06 16:53:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_proto_violation [2021-11-06 16:53:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_freeze_devq [2021-11-06 16:53:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_freeze_devq [2021-11-06 16:53:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_linux_bus_reset [2021-11-06 16:53:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_linux_bus_reset [2021-11-06 16:53:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_brkadrint [2021-11-06 16:53:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_brkadrint [2021-11-06 16:53:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_handle_msg_reject [2021-11-06 16:53:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_handle_msg_reject [2021-11-06 16:53:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:53:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_reset [2021-11-06 16:53:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_reset [2021-11-06 16:53:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_search_untagged_queues [2021-11-06 16:53:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_search_untagged_queues [2021-11-06 16:53:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_download_instr [2021-11-06 16:53:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_download_instr [2021-11-06 16:53:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_intr [2021-11-06 16:53:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_intr [2021-11-06 16:53:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_free [2021-11-06 16:53:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_free [2021-11-06 16:53:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure ahc_reset_channel [2021-11-06 16:53:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ahc_reset_channel [2021-11-06 16:53:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:07:20,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:07:20,918 INFO L299 CfgBuilder]: Removed 24803 assume(true) statements. [2021-11-06 17:07:20,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:07:20 BoogieIcfgContainer [2021-11-06 17:07:20,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:07:20,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:07:20,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:07:20,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:07:20,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:53:36" (1/3) ... [2021-11-06 17:07:20,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a69616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:07:20, skipping insertion in model container [2021-11-06 17:07:20,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:53:42" (2/3) ... [2021-11-06 17:07:20,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a69616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:07:20, skipping insertion in model container [2021-11-06 17:07:20,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:07:20" (3/3) ... [2021-11-06 17:07:20,957 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--aic7xxx--aic7xxx.ko-entry_point.cil.out.i [2021-11-06 17:07:20,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:07:20,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 17:07:21,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:07:21,188 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 17:07:21,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 17:07:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 33725 states, 33597 states have (on average 1.4015537101526923) internal successors, (47088), 33613 states have internal predecessors, (47088), 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) [2021-11-06 17:07:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 17:07:21,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:07:21,573 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] [2021-11-06 17:07:21,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:07:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:07:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1384435702, now seen corresponding path program 1 times [2021-11-06 17:07:21,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:07:21,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459382735] [2021-11-06 17:07:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:07:21,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:07:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:07:23,289 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 17:07:23,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:07:23,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459382735] [2021-11-06 17:07:23,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459382735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:07:23,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:07:23,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:07:23,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52997712] [2021-11-06 17:07:23,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:07:23,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:07:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:07:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:07:23,371 INFO L87 Difference]: Start difference. First operand has 33725 states, 33597 states have (on average 1.4015537101526923) internal successors, (47088), 33613 states have internal predecessors, (47088), 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) [2021-11-06 17:07:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:07:24,192 INFO L93 Difference]: Finished difference Result 67446 states and 94616 transitions. [2021-11-06 17:07:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:07:24,199 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 [2021-11-06 17:07:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:07:24,447 INFO L225 Difference]: With dead ends: 67446 [2021-11-06 17:07:24,447 INFO L226 Difference]: Without dead ends: 33678 [2021-11-06 17:07:24,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:07:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33678 states. [2021-11-06 17:07:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33678 to 33678. [2021-11-06 17:07:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33678 states, 33551 states have (on average 1.3989746952400823) internal successors, (46937), 33566 states have internal predecessors, (46937), 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) [2021-11-06 17:07:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33678 states to 33678 states and 47115 transitions. [2021-11-06 17:07:25,871 INFO L78 Accepts]: Start accepts. Automaton has 33678 states and 47115 transitions. Word has length 42 [2021-11-06 17:07:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:07:25,872 INFO L470 AbstractCegarLoop]: Abstraction has 33678 states and 47115 transitions. [2021-11-06 17:07:25,872 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) [2021-11-06 17:07:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33678 states and 47115 transitions. [2021-11-06 17:07:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 17:07:25,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:07:25,874 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] [2021-11-06 17:07:25,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:07:25,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:07:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:07:25,875 INFO L85 PathProgramCache]: Analyzing trace with hash 922758800, now seen corresponding path program 1 times [2021-11-06 17:07:25,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:07:25,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347669404] [2021-11-06 17:07:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:07:25,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:07:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:07:27,566 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 17:07:27,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:07:27,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347669404] [2021-11-06 17:07:27,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347669404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:07:27,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:07:27,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:07:27,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478394646] [2021-11-06 17:07:27,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:07:27,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:07:27,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:07:27,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:07:27,569 INFO L87 Difference]: Start difference. First operand 33678 states and 47115 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) [2021-11-06 17:07:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:07:31,472 INFO L93 Difference]: Finished difference Result 100879 states and 141144 transitions. [2021-11-06 17:07:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:07:31,473 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 [2021-11-06 17:07:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:07:31,934 INFO L225 Difference]: With dead ends: 100879 [2021-11-06 17:07:31,934 INFO L226 Difference]: Without dead ends: 67231 [2021-11-06 17:07:32,017 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 17:07:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67231 states. [2021-11-06 17:07:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67231 to 67231. [2021-11-06 17:07:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67231 states, 66980 states have (on average 1.398999701403404) internal successors, (93705), 67008 states have internal predecessors, (93705), 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) [2021-11-06 17:07:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67231 states to 67231 states and 94061 transitions. [2021-11-06 17:07:33,612 INFO L78 Accepts]: Start accepts. Automaton has 67231 states and 94061 transitions. Word has length 42 [2021-11-06 17:07:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:07:33,616 INFO L470 AbstractCegarLoop]: Abstraction has 67231 states and 94061 transitions. [2021-11-06 17:07:33,616 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) [2021-11-06 17:07:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 67231 states and 94061 transitions. [2021-11-06 17:07:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 17:07:33,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:07:33,622 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] [2021-11-06 17:07:33,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:07:33,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:07:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:07:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 133818662, now seen corresponding path program 1 times [2021-11-06 17:07:33,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:07:33,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770329623] [2021-11-06 17:07:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:07:33,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:07:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:07:34,944 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 17:07:34,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:07:34,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770329623] [2021-11-06 17:07:34,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770329623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:07:34,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:07:34,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:07:34,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285317345] [2021-11-06 17:07:34,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:07:34,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:07:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:07:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:07:34,948 INFO L87 Difference]: Start difference. First operand 67231 states and 94061 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) [2021-11-06 17:07:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:07:35,740 INFO L93 Difference]: Finished difference Result 67231 states and 94061 transitions. [2021-11-06 17:07:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:07:35,740 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 [2021-11-06 17:07:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:07:36,078 INFO L225 Difference]: With dead ends: 67231 [2021-11-06 17:07:36,079 INFO L226 Difference]: Without dead ends: 67229 [2021-11-06 17:07:36,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:07:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67229 states. [2021-11-06 17:07:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67229 to 67229. [2021-11-06 17:07:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67229 states, 66979 states have (on average 1.3989907284372713) internal successors, (93703), 67006 states have internal predecessors, (93703), 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) [2021-11-06 17:07:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67229 states to 67229 states and 94059 transitions. [2021-11-06 17:07:37,602 INFO L78 Accepts]: Start accepts. Automaton has 67229 states and 94059 transitions. Word has length 49 [2021-11-06 17:07:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:07:37,603 INFO L470 AbstractCegarLoop]: Abstraction has 67229 states and 94059 transitions. [2021-11-06 17:07:37,603 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-06 17:07:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67229 states and 94059 transitions. [2021-11-06 17:07:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 17:07:37,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:07:37,605 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] [2021-11-06 17:07:37,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:07:37,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:07:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:07:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash -146469218, now seen corresponding path program 1 times [2021-11-06 17:07:37,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:07:37,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306429500] [2021-11-06 17:07:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:07:37,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms