./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-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-43_2a-drivers--scsi--st.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 690e5ddfda68a7db304fad8d47292bfd797939e2371e46066adb3eacde28ef38 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 22:54:40,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:54:40,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:54:40,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:54:40,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:54:40,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:54:40,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:54:40,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:54:40,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:54:40,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:54:40,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:54:40,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:54:40,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:54:40,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:54:40,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:54:40,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:54:40,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:54:40,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:54:40,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:54:40,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:54:40,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:54:40,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:54:40,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:54:40,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:54:40,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:54:40,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:54:40,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:54:40,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:54:40,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:54:40,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:54:40,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:54:40,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:54:40,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:54:40,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:54:40,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:54:40,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:54:40,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:54:40,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:54:40,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:54:40,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:54:40,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:54:40,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:54:40,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:54:40,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:54:40,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:54:40,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:54:40,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:54:40,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:54:40,549 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:54:40,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:54:40,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:54:40,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:54:40,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:54:40,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:54:40,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:54:40,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:54:40,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:54:40,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:54:40,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:54:40,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:54:40,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:54:40,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:40,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:54:40,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:54:40,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:54:40,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:54:40,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 690e5ddfda68a7db304fad8d47292bfd797939e2371e46066adb3eacde28ef38 [2021-11-02 22:54:40,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:54:40,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:54:40,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:54:40,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:54:40,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:54:40,773 INFO L432 ainManager$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-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-02 22:54:40,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e95b48b2/f6b8d52541c14bbd83dd2f5ee5edb37b/FLAGcaa7b81ae [2021-11-02 22:54:41,385 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:54:41,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-02 22:54:41,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e95b48b2/f6b8d52541c14bbd83dd2f5ee5edb37b/FLAGcaa7b81ae [2021-11-02 22:54:41,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e95b48b2/f6b8d52541c14bbd83dd2f5ee5edb37b [2021-11-02 22:54:41,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:54:41,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:54:41,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:41,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:54:41,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:54:41,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140ede78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41, skipping insertion in model container [2021-11-02 22:54:41,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:54:41,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:43,611 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-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i[343246,343259] [2021-11-02 22:54:43,661 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 22:54:43,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:43,706 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:54:44,104 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-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i[343246,343259] [2021-11-02 22:54:44,107 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 22:54:44,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:44,178 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:54:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44 WrapperNode [2021-11-02 22:54:44,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:44,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:44,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:54:44,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:54:44,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:44,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:46,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:46,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:54:46,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:54:46,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:54:46,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:46,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:47,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:47,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:48,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:49,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:49,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:49,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:54:49,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:54:49,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:54:49,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:54:49,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (1/1) ... [2021-11-02 22:54:49,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:49,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 22:54:49,689 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) [2021-11-02 22:54:49,707 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 [2021-11-02 22:54:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:54:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:54:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:54:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-02 22:54:49,726 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:54:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-02 22:54:49,728 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:54:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 22:54:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:54:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:54:49,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:55:17,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:55:17,078 INFO L299 CfgBuilder]: Removed 13632 assume(true) statements. [2021-11-02 22:55:17,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:55:17 BoogieIcfgContainer [2021-11-02 22:55:17,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:55:17,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:55:17,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:55:17,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:55:17,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:54:41" (1/3) ... [2021-11-02 22:55:17,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231ba775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:55:17, skipping insertion in model container [2021-11-02 22:55:17,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:44" (2/3) ... [2021-11-02 22:55:17,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231ba775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:55:17, skipping insertion in model container [2021-11-02 22:55:17,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:55:17" (3/3) ... [2021-11-02 22:55:17,105 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-02 22:55:17,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:55:17,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-02 22:55:17,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:55:17,207 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 [2021-11-02 22:55:17,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-02 22:55:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 17952 states, 17828 states have (on average 1.4632600403859097) internal successors, (26087), 17915 states have internal predecessors, (26087), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-02 22:55:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-02 22:55:17,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:55:17,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:17,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 22:55:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1522646586, now seen corresponding path program 1 times [2021-11-02 22:55:17,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:17,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851560507] [2021-11-02 22:55:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:17,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:18,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:18,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851560507] [2021-11-02 22:55:18,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851560507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:18,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:18,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:55:18,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844161523] [2021-11-02 22:55:18,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:55:18,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:55:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:55:18,470 INFO L87 Difference]: Start difference. First operand has 17952 states, 17828 states have (on average 1.4632600403859097) internal successors, (26087), 17915 states have internal predecessors, (26087), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2021-11-02 22:55:20,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 22:55:34,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 22:58:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:15,907 INFO L93 Difference]: Finished difference Result 35900 states and 52339 transitions. [2021-11-02 22:58:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:58:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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 276 [2021-11-02 22:58:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:15,980 INFO L225 Difference]: With dead ends: 35900 [2021-11-02 22:58:15,981 INFO L226 Difference]: Without dead ends: 17917 [2021-11-02 22:58:16,021 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 [2021-11-02 22:58:16,025 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25394 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163071.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 116.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25394 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175427.33ms IncrementalHoareTripleChecker+Time [2021-11-02 22:58:16,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 25396 Unknown, 0 Unchecked, 116.21ms Time], IncrementalHoareTripleChecker [0 Valid, 25394 Invalid, 2 Unknown, 0 Unchecked, 175427.33ms Time] [2021-11-02 22:58:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17917 states. [2021-11-02 22:58:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17917 to 17917. [2021-11-02 22:58:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17917 states, 17794 states have (on average 1.4251995054512756) internal successors, (25360), 17880 states have internal predecessors, (25360), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-02 22:58:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17917 states to 17917 states and 25428 transitions. [2021-11-02 22:58:16,672 INFO L78 Accepts]: Start accepts. Automaton has 17917 states and 25428 transitions. Word has length 276 [2021-11-02 22:58:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:16,674 INFO L470 AbstractCegarLoop]: Abstraction has 17917 states and 25428 transitions. [2021-11-02 22:58:16,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2021-11-02 22:58:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17917 states and 25428 transitions. [2021-11-02 22:58:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-02 22:58:16,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:58:16,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:16,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:58:16,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 22:58:16,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1804851616, now seen corresponding path program 1 times [2021-11-02 22:58:16,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:16,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579718225] [2021-11-02 22:58:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:16,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:17,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:17,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579718225] [2021-11-02 22:58:17,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579718225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:17,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:17,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:58:17,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481533664] [2021-11-02 22:58:17,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:58:17,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:58:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:17,375 INFO L87 Difference]: Start difference. First operand 17917 states and 25428 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-02 22:58:19,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 22:58:43,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:04:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:11,831 INFO L93 Difference]: Finished difference Result 35601 states and 50625 transitions. [2021-11-02 23:04:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:04:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 276 [2021-11-02 23:04:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:11,877 INFO L225 Difference]: With dead ends: 35601 [2021-11-02 23:04:11,877 INFO L226 Difference]: Without dead ends: 17920 [2021-11-02 23:04:11,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:04:11,903 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 24961 mSDsCounter, 0 mSdLazyCounter, 50713 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 330979.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 50719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 320.56ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50713 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352199.30ms IncrementalHoareTripleChecker+Time [2021-11-02 23:04:11,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 50719 Unknown, 0 Unchecked, 320.56ms Time], IncrementalHoareTripleChecker [4 Valid, 50713 Invalid, 2 Unknown, 0 Unchecked, 352199.30ms Time] [2021-11-02 23:04:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2021-11-02 23:04:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 17920. [2021-11-02 23:04:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17920 states, 17797 states have (on average 1.425127830533236) internal successors, (25363), 17883 states have internal predecessors, (25363), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-02 23:04:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17920 states to 17920 states and 25431 transitions. [2021-11-02 23:04:12,224 INFO L78 Accepts]: Start accepts. Automaton has 17920 states and 25431 transitions. Word has length 276 [2021-11-02 23:04:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:12,228 INFO L470 AbstractCegarLoop]: Abstraction has 17920 states and 25431 transitions. [2021-11-02 23:04:12,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-02 23:04:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17920 states and 25431 transitions. [2021-11-02 23:04:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-02 23:04:12,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:04:12,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:12,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:04:12,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-02 23:04:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:12,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1892209029, now seen corresponding path program 1 times [2021-11-02 23:04:12,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:12,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857742794] [2021-11-02 23:04:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:12,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:04:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:04:12,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:12,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857742794] [2021-11-02 23:04:12,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857742794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:04:12,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:04:12,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:04:12,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312253971] [2021-11-02 23:04:12,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:04:12,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:04:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:04:12,777 INFO L87 Difference]: Start difference. First operand 17920 states and 25431 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2021-11-02 23:04:14,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:04:38,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15