./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-5f08f0f [2021-11-05 19:34:47,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:34:47,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:34:47,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:34:47,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:34:47,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:34:47,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:34:47,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:34:47,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:34:47,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:34:47,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:34:47,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:34:47,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:34:47,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:34:47,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:34:47,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:34:47,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:34:47,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:34:47,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:34:47,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:34:47,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:34:47,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:34:47,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:34:47,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:34:47,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:34:47,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:34:47,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:34:47,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:34:47,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:34:47,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:34:47,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:34:47,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:34:47,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:34:47,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:34:47,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:34:47,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:34:47,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:34:47,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:34:47,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:34:47,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:34:47,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:34:47,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:34:47,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:34:47,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:34:47,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:34:47,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:34:47,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:34:47,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:34:47,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:34:47,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:34:47,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:34:47,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:34:47,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:34:47,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:34:47,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:34:47,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:34:47,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:34:47,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:34:47,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:34:47,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:34:47,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:34:47,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:34:47,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:34:47,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:34:47,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:34:47,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:34:47,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:34:47,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:34:47,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:34:47,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:34:47,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:34:47,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 690e5ddfda68a7db304fad8d47292bfd797939e2371e46066adb3eacde28ef38 [2021-11-05 19:34:47,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:34:47,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:34:47,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:34:47,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:34:47,863 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:34:47,864 INFO L432 ainManager$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 [2021-11-05 19:34:47,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491172914/f46ed8202b1949f28cba2c8c5f01073b/FLAGae73734c3 [2021-11-05 19:34:48,572 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:34:48,573 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 [2021-11-05 19:34:48,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491172914/f46ed8202b1949f28cba2c8c5f01073b/FLAGae73734c3 [2021-11-05 19:34:48,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491172914/f46ed8202b1949f28cba2c8c5f01073b [2021-11-05 19:34:48,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:34:48,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:34:48,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:34:48,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:34:48,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:34:48,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:34:48" (1/1) ... [2021-11-05 19:34:48,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61595307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:48, skipping insertion in model container [2021-11-05 19:34:48,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:34:48" (1/1) ... [2021-11-05 19:34:48,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:34:48,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:34:50,274 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] [2021-11-05 19:34:50,312 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 19:34:50,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:34:50,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:34:50,851 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] [2021-11-05 19:34:50,858 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 19:34:50,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:34:51,027 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:34:51,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51 WrapperNode [2021-11-05 19:34:51,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:34:51,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:34:51,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:34:51,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:34:51,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:51,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:53,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:34:53,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:34:53,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:34:53,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:34:53,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:53,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:54,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:54,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:55,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:55,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:55,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:56,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:34:56,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:34:56,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:34:56,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:34:56,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (1/1) ... [2021-11-05 19:34:56,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:34:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:34:56,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:34:56,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:34:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 19:34:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:34:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:34:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-05 19:34:56,313 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-05 19:34:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:34:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:34:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-05 19:34:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:34:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:34:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:36:11,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:36:11,884 INFO L299 CfgBuilder]: Removed 13632 assume(true) statements. [2021-11-05 19:36:11,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:36:11 BoogieIcfgContainer [2021-11-05 19:36:11,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:36:11,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:36:11,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:36:11,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:36:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:34:48" (1/3) ... [2021-11-05 19:36:11,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633cb224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:36:11, skipping insertion in model container [2021-11-05 19:36:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:34:51" (2/3) ... [2021-11-05 19:36:11,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633cb224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:36:11, skipping insertion in model container [2021-11-05 19:36:11,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:36:11" (3/3) ... [2021-11-05 19:36:11,907 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-05 19:36:11,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:36:11,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-05 19:36:11,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:36:11,999 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 19:36:11,999 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-05 19:36:12,200 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) [2021-11-05 19:36:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-05 19:36:12,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:12,220 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] [2021-11-05 19:36:12,221 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)] === [2021-11-05 19:36:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1522646586, now seen corresponding path program 1 times [2021-11-05 19:36:12,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:12,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560159146] [2021-11-05 19:36:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:12,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:13,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:13,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560159146] [2021-11-05 19:36:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560159146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:13,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:13,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:36:13,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836671486] [2021-11-05 19:36:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:13,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:36:13,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:13,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:36:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:36:13,127 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) [2021-11-05 19:36:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:13,581 INFO L93 Difference]: Finished difference Result 35900 states and 52339 transitions. [2021-11-05 19:36:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:36:13,583 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 [2021-11-05 19:36:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:13,659 INFO L225 Difference]: With dead ends: 35900 [2021-11-05 19:36:13,660 INFO L226 Difference]: Without dead ends: 17917 [2021-11-05 19:36:13,940 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 [2021-11-05 19:36:13,944 INFO L933 BasicCegarLoop]: 25487 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25487 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:13,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25487 Invalid, 0 Unknown, 0 Unchecked, 49.75ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:36:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17917 states. [2021-11-05 19:36:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17917 to 17917. [2021-11-05 19:36:14,379 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) [2021-11-05 19:36:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17917 states to 17917 states and 25428 transitions. [2021-11-05 19:36:14,432 INFO L78 Accepts]: Start accepts. Automaton has 17917 states and 25428 transitions. Word has length 276 [2021-11-05 19:36:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:14,435 INFO L470 AbstractCegarLoop]: Abstraction has 17917 states and 25428 transitions. [2021-11-05 19:36:14,436 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) [2021-11-05 19:36:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 17917 states and 25428 transitions. [2021-11-05 19:36:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-05 19:36:14,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:14,443 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] [2021-11-05 19:36:14,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:36:14,444 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)] === [2021-11-05 19:36:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1804851616, now seen corresponding path program 1 times [2021-11-05 19:36:14,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:14,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171906600] [2021-11-05 19:36:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:14,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:15,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:15,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171906600] [2021-11-05 19:36:15,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171906600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:15,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:15,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:36:15,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561273629] [2021-11-05 19:36:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:15,249 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) [2021-11-05 19:36:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:16,133 INFO L93 Difference]: Finished difference Result 52963 states and 75404 transitions. [2021-11-05 19:36:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:16,135 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 [2021-11-05 19:36:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:16,230 INFO L225 Difference]: With dead ends: 52963 [2021-11-05 19:36:16,231 INFO L226 Difference]: Without dead ends: 35305 [2021-11-05 19:36:16,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:16,269 INFO L933 BasicCegarLoop]: 25461 mSDtfsCounter, 25075 mSDsluCounter, 25152 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25075 SdHoareTripleChecker+Valid, 50613 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.07ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:16,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25075 Valid, 50613 Invalid, 11 Unknown, 0 Unchecked, 68.61ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 123.07ms Time] [2021-11-05 19:36:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35305 states. [2021-11-05 19:36:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35305 to 35130. [2021-11-05 19:36:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35130 states, 34971 states have (on average 1.4301564153155473) internal successors, (50014), 35057 states have internal predecessors, (50014), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 19:36:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35130 states to 35130 states and 50150 transitions. [2021-11-05 19:36:16,986 INFO L78 Accepts]: Start accepts. Automaton has 35130 states and 50150 transitions. Word has length 276 [2021-11-05 19:36:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:16,988 INFO L470 AbstractCegarLoop]: Abstraction has 35130 states and 50150 transitions. [2021-11-05 19:36:16,988 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) [2021-11-05 19:36:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35130 states and 50150 transitions. [2021-11-05 19:36:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-05 19:36:16,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:16,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:16,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:36:16,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1205484002, now seen corresponding path program 1 times [2021-11-05 19:36:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:17,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581414581] [2021-11-05 19:36:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:17,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:17,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 19:36:17,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669292804] [2021-11-05 19:36:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:17,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:36:17,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:36:17,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:36:17,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 19:36:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:20,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 8288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:36:20,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:36:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:21,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:36:21,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:21,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581414581] [2021-11-05 19:36:21,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 19:36:21,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669292804] [2021-11-05 19:36:21,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669292804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:21,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:21,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:36:21,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021735676] [2021-11-05 19:36:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:21,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:21,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:21,508 INFO L87 Difference]: Start difference. First operand 35130 states and 50150 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:24,515 INFO L93 Difference]: Finished difference Result 86715 states and 123831 transitions. [2021-11-05 19:36:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 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 298 [2021-11-05 19:36:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:24,646 INFO L225 Difference]: With dead ends: 86715 [2021-11-05 19:36:24,646 INFO L226 Difference]: Without dead ends: 51844 [2021-11-05 19:36:24,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:24,713 INFO L933 BasicCegarLoop]: 24972 mSDtfsCounter, 23275 mSDsluCounter, 24188 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1623.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23275 SdHoareTripleChecker+Valid, 49160 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.32ms SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2069.09ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:24,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23275 Valid, 49160 Invalid, 1938 Unknown, 0 Unchecked, 58.32ms Time], IncrementalHoareTripleChecker [468 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2069.09ms Time] [2021-11-05 19:36:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51844 states. [2021-11-05 19:36:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51844 to 51671. [2021-11-05 19:36:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51671 states, 51476 states have (on average 1.4210894397389076) internal successors, (73152), 51562 states have internal predecessors, (73152), 102 states have call successors, (102), 6 states have call predecessors, (102), 6 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-05 19:36:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51671 states to 51671 states and 73356 transitions. [2021-11-05 19:36:25,830 INFO L78 Accepts]: Start accepts. Automaton has 51671 states and 73356 transitions. Word has length 298 [2021-11-05 19:36:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:25,830 INFO L470 AbstractCegarLoop]: Abstraction has 51671 states and 73356 transitions. [2021-11-05 19:36:25,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51671 states and 73356 transitions. [2021-11-05 19:36:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-05 19:36:25,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:25,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:25,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 19:36:26,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:36:26,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1345252865, now seen corresponding path program 1 times [2021-11-05 19:36:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:26,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446502879] [2021-11-05 19:36:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:26,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:26,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 19:36:26,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532222257] [2021-11-05 19:36:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:26,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:36:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:36:26,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:36:26,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 19:36:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:29,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 8303 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:36:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:36:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:30,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:36:30,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:30,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446502879] [2021-11-05 19:36:30,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 19:36:30,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532222257] [2021-11-05 19:36:30,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532222257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:30,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:30,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:36:30,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529176833] [2021-11-05 19:36:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:30,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:30,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:30,017 INFO L87 Difference]: Start difference. First operand 51671 states and 73356 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:30,885 INFO L93 Difference]: Finished difference Result 87544 states and 124694 transitions. [2021-11-05 19:36:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:30,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 299 [2021-11-05 19:36:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:30,970 INFO L225 Difference]: With dead ends: 87544 [2021-11-05 19:36:30,971 INFO L226 Difference]: Without dead ends: 36132 [2021-11-05 19:36:31,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:31,268 INFO L933 BasicCegarLoop]: 25758 mSDtfsCounter, 963 mSDsluCounter, 25128 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 50886 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.10ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.80ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:31,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 50886 Invalid, 55 Unknown, 0 Unchecked, 31.10ms Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 202.80ms Time] [2021-11-05 19:36:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36132 states. [2021-11-05 19:36:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36132 to 36124. [2021-11-05 19:36:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36124 states, 35965 states have (on average 1.4301404142916725) internal successors, (51435), 36051 states have internal predecessors, (51435), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 19:36:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51571 transitions. [2021-11-05 19:36:32,032 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51571 transitions. Word has length 299 [2021-11-05 19:36:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:32,033 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51571 transitions. [2021-11-05 19:36:32,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51571 transitions. [2021-11-05 19:36:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-05 19:36:32,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:32,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:32,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:36:32,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-05 19:36:32,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1162024578, now seen corresponding path program 1 times [2021-11-05 19:36:32,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:32,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853595945] [2021-11-05 19:36:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:32,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:32,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:32,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853595945] [2021-11-05 19:36:32,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853595945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:32,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:32,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:36:32,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182335458] [2021-11-05 19:36:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:32,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:32,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:32,948 INFO L87 Difference]: Start difference. First operand 36124 states and 51571 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:33,541 INFO L93 Difference]: Finished difference Result 71766 states and 102546 transitions. [2021-11-05 19:36:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 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 315 [2021-11-05 19:36:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:33,616 INFO L225 Difference]: With dead ends: 71766 [2021-11-05 19:36:33,617 INFO L226 Difference]: Without dead ends: 36124 [2021-11-05 19:36:33,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:33,884 INFO L933 BasicCegarLoop]: 25426 mSDtfsCounter, 25155 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25155 SdHoareTripleChecker+Valid, 25426 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.72ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:33,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25155 Valid, 25426 Invalid, 1 Unknown, 0 Unchecked, 24.40ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.72ms Time] [2021-11-05 19:36:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-05 19:36:34,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-05 19:36:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36124 states, 35965 states have (on average 1.4300291950507438) internal successors, (51431), 36051 states have internal predecessors, (51431), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 19:36:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51567 transitions. [2021-11-05 19:36:34,862 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51567 transitions. Word has length 315 [2021-11-05 19:36:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:34,863 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51567 transitions. [2021-11-05 19:36:34,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51567 transitions. [2021-11-05 19:36:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-05 19:36:34,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:34,867 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:34,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:36:34,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2059417856, now seen corresponding path program 1 times [2021-11-05 19:36:34,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:34,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819947251] [2021-11-05 19:36:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:34,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:35,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:35,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819947251] [2021-11-05 19:36:35,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819947251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:35,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:35,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:36:35,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056752858] [2021-11-05 19:36:35,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:35,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:35,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:35,447 INFO L87 Difference]: Start difference. First operand 36124 states and 51567 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:36,116 INFO L93 Difference]: Finished difference Result 71766 states and 102538 transitions. [2021-11-05 19:36:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:36,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 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 315 [2021-11-05 19:36:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:36,191 INFO L225 Difference]: With dead ends: 71766 [2021-11-05 19:36:36,191 INFO L226 Difference]: Without dead ends: 36124 [2021-11-05 19:36:36,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:36,253 INFO L933 BasicCegarLoop]: 25425 mSDtfsCounter, 25153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25153 SdHoareTripleChecker+Valid, 25425 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.58ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:36,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25153 Valid, 25425 Invalid, 1 Unknown, 0 Unchecked, 24.88ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.58ms Time] [2021-11-05 19:36:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-05 19:36:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-05 19:36:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36124 states, 35965 states have (on average 1.429917975809815) internal successors, (51427), 36051 states have internal predecessors, (51427), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 19:36:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51563 transitions. [2021-11-05 19:36:37,121 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51563 transitions. Word has length 315 [2021-11-05 19:36:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:37,122 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51563 transitions. [2021-11-05 19:36:37,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51563 transitions. [2021-11-05 19:36:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-05 19:36:37,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:37,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:37,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:36:37,126 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1811271362, now seen corresponding path program 1 times [2021-11-05 19:36:37,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:37,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381551184] [2021-11-05 19:36:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:37,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:37,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:37,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381551184] [2021-11-05 19:36:37,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381551184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:37,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:37,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:36:37,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824574651] [2021-11-05 19:36:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:37,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:36:37,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:36:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:37,654 INFO L87 Difference]: Start difference. First operand 36124 states and 51563 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:36:38,409 INFO L93 Difference]: Finished difference Result 71766 states and 102530 transitions. [2021-11-05 19:36:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:36:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 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 315 [2021-11-05 19:36:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:36:38,475 INFO L225 Difference]: With dead ends: 71766 [2021-11-05 19:36:38,476 INFO L226 Difference]: Without dead ends: 36124 [2021-11-05 19:36:38,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:36:38,548 INFO L933 BasicCegarLoop]: 25424 mSDtfsCounter, 25150 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25150 SdHoareTripleChecker+Valid, 25424 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.62ms IncrementalHoareTripleChecker+Time [2021-11-05 19:36:38,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25150 Valid, 25424 Invalid, 1 Unknown, 0 Unchecked, 29.49ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.62ms Time] [2021-11-05 19:36:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-05 19:36:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-05 19:36:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36124 states, 35965 states have (on average 1.4298067565688863) internal successors, (51423), 36051 states have internal predecessors, (51423), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 19:36:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51559 transitions. [2021-11-05 19:36:39,481 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51559 transitions. Word has length 315 [2021-11-05 19:36:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:36:39,482 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51559 transitions. [2021-11-05 19:36:39,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51559 transitions. [2021-11-05 19:36:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-05 19:36:39,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:36:39,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:36:39,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:36:39,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [st_int_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION, enlarge_bufferErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-05 19:36:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:36:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1111888636, now seen corresponding path program 1 times [2021-11-05 19:36:39,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:36:39,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482132504] [2021-11-05 19:36:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:36:39,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:36:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:36:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:36:40,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:36:40,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482132504] [2021-11-05 19:36:40,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482132504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:36:40,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:36:40,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:36:40,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511781856] [2021-11-05 19:36:40,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:36:40,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:36:40,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:36:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:36:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:36:40,009 INFO L87 Difference]: Start difference. First operand 36124 states and 51559 transitions. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:36:42,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []