./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-dev-173e394 [2021-11-06 17:49:36,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:49:36,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:49:36,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:49:36,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:49:36,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:49:36,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:49:36,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:49:36,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:49:36,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:49:36,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:49:36,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:49:36,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:49:36,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:49:36,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:49:36,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:49:36,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:49:36,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:49:36,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:49:36,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:49:36,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:49:36,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:49:36,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:49:36,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:49:36,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:49:36,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:49:36,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:49:36,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:49:36,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:49:36,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:49:36,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:49:36,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:49:36,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:49:36,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:49:36,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:49:36,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:49:36,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:49:36,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:49:36,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:49:36,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:49:36,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:49:36,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:49:36,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:49:36,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:49:36,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:49:36,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:49:36,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:49:36,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:49:36,744 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:49:36,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:49:36,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:49:36,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:49:36,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:49:36,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:49:36,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:49:36,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:49:36,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:49:36,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:49:36,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:49:36,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:49:36,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 690e5ddfda68a7db304fad8d47292bfd797939e2371e46066adb3eacde28ef38 [2021-11-06 17:49:36,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:49:36,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:49:36,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:49:36,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:49:36,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:49:36,930 INFO L432 ainManager$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 [2021-11-06 17:49:36,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c450890/76b84db6f3d64cb5acf6919c623b2210/FLAG19d762dd6 [2021-11-06 17:49:37,565 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:49:37,566 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 [2021-11-06 17:49:37,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c450890/76b84db6f3d64cb5acf6919c623b2210/FLAG19d762dd6 [2021-11-06 17:49:37,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c450890/76b84db6f3d64cb5acf6919c623b2210 [2021-11-06 17:49:37,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:49:37,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:49:37,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:49:37,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:49:37,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:49:37,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:49:37" (1/1) ... [2021-11-06 17:49:37,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5868f3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:37, skipping insertion in model container [2021-11-06 17:49:37,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:49:37" (1/1) ... [2021-11-06 17:49:37,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:49:37,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:49:39,455 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] [2021-11-06 17:49:39,485 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 17:49:39,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:49:39,518 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:49:39,886 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] [2021-11-06 17:49:39,892 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 17:49:39,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:49:39,977 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:49:39,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39 WrapperNode [2021-11-06 17:49:39,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:49:39,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:49:39,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:49:39,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:49:39,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:40,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:41,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:49:41,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:49:41,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:49:41,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:49:41,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:41,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:42,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:42,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:44,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:44,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:44,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:45,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:49:45,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:49:45,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:49:45,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:49:45,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (1/1) ... [2021-11-06 17:49:45,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:49:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:49:45,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:49:45,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:49:45,475 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-06 17:49:45,477 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 17:49:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-06 17:49:45,478 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:49:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:49:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:49:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:49:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:49:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:49:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:50:51,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:50:51,301 INFO L299 CfgBuilder]: Removed 13632 assume(true) statements. [2021-11-06 17:50:51,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:50:51 BoogieIcfgContainer [2021-11-06 17:50:51,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:50:51,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:50:51,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:50:51,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:50:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:49:37" (1/3) ... [2021-11-06 17:50:51,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53ba25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:50:51, skipping insertion in model container [2021-11-06 17:50:51,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:49:39" (2/3) ... [2021-11-06 17:50:51,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53ba25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:50:51, skipping insertion in model container [2021-11-06 17:50:51,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:50:51" (3/3) ... [2021-11-06 17:50:51,323 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-06 17:50:51,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:50:51,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-06 17:50:51,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:50:51,546 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:50:51,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-06 17:50:51,738 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) [2021-11-06 17:50:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-06 17:50:51,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:51,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:50:51,753 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)] === [2021-11-06 17:50:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1522646586, now seen corresponding path program 1 times [2021-11-06 17:50:51,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:51,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742280007] [2021-11-06 17:50:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:51,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:52,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:52,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742280007] [2021-11-06 17:50:52,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742280007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:52,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:52,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:50:52,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011264436] [2021-11-06 17:50:52,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:50:52,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:50:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:50:52,580 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) [2021-11-06 17:50:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:52,912 INFO L93 Difference]: Finished difference Result 35900 states and 52339 transitions. [2021-11-06 17:50:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:50:52,914 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 [2021-11-06 17:50:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:52,981 INFO L225 Difference]: With dead ends: 35900 [2021-11-06 17:50:52,981 INFO L226 Difference]: Without dead ends: 17917 [2021-11-06 17:50:53,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:50:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17917 states. [2021-11-06 17:50:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17917 to 17917. [2021-11-06 17:50:53,652 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) [2021-11-06 17:50:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17917 states to 17917 states and 25428 transitions. [2021-11-06 17:50:53,710 INFO L78 Accepts]: Start accepts. Automaton has 17917 states and 25428 transitions. Word has length 276 [2021-11-06 17:50:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:53,712 INFO L470 AbstractCegarLoop]: Abstraction has 17917 states and 25428 transitions. [2021-11-06 17:50:53,713 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) [2021-11-06 17:50:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 17917 states and 25428 transitions. [2021-11-06 17:50:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-06 17:50:53,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:53,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:50:53,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:50:53,721 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)] === [2021-11-06 17:50:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1804851616, now seen corresponding path program 1 times [2021-11-06 17:50:53,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:53,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507502564] [2021-11-06 17:50:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:53,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:54,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507502564] [2021-11-06 17:50:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507502564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:54,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:54,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:50:54,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105556491] [2021-11-06 17:50:54,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:54,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:54,432 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) [2021-11-06 17:50:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:55,341 INFO L93 Difference]: Finished difference Result 52963 states and 75404 transitions. [2021-11-06 17:50:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:55,342 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 [2021-11-06 17:50:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:55,479 INFO L225 Difference]: With dead ends: 52963 [2021-11-06 17:50:55,480 INFO L226 Difference]: Without dead ends: 35305 [2021-11-06 17:50:55,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35305 states. [2021-11-06 17:50:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35305 to 35130. [2021-11-06 17:50:56,145 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) [2021-11-06 17:50:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35130 states to 35130 states and 50150 transitions. [2021-11-06 17:50:56,246 INFO L78 Accepts]: Start accepts. Automaton has 35130 states and 50150 transitions. Word has length 276 [2021-11-06 17:50:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:56,249 INFO L470 AbstractCegarLoop]: Abstraction has 35130 states and 50150 transitions. [2021-11-06 17:50:56,249 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) [2021-11-06 17:50:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35130 states and 50150 transitions. [2021-11-06 17:50:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-06 17:50:56,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:56,256 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:50:56,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:50:56,256 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)] === [2021-11-06 17:50:56,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1205484002, now seen corresponding path program 1 times [2021-11-06 17:50:56,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:56,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861679501] [2021-11-06 17:50:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:56,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:56,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:50:56,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404002079] [2021-11-06 17:50:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:56,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:50:56,670 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) [2021-11-06 17:50:56,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:50:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:59,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 8288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:50:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:51:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:00,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:00,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861679501] [2021-11-06 17:51:00,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:51:00,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404002079] [2021-11-06 17:51:00,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404002079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:00,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:00,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:00,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942978022] [2021-11-06 17:51:00,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:00,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:00,562 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) [2021-11-06 17:51:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:03,234 INFO L93 Difference]: Finished difference Result 86715 states and 123831 transitions. [2021-11-06 17:51:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:03,235 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 [2021-11-06 17:51:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:03,340 INFO L225 Difference]: With dead ends: 86715 [2021-11-06 17:51:03,340 INFO L226 Difference]: Without dead ends: 51844 [2021-11-06 17:51:03,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51844 states. [2021-11-06 17:51:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51844 to 51671. [2021-11-06 17:51:04,175 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) [2021-11-06 17:51:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51671 states to 51671 states and 73356 transitions. [2021-11-06 17:51:04,280 INFO L78 Accepts]: Start accepts. Automaton has 51671 states and 73356 transitions. Word has length 298 [2021-11-06 17:51:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:04,280 INFO L470 AbstractCegarLoop]: Abstraction has 51671 states and 73356 transitions. [2021-11-06 17:51:04,280 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) [2021-11-06 17:51:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 51671 states and 73356 transitions. [2021-11-06 17:51:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-06 17:51:04,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:04,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:51:04,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 17:51:04,499 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 [2021-11-06 17:51:04,499 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)] === [2021-11-06 17:51:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1345252865, now seen corresponding path program 1 times [2021-11-06 17:51:04,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:04,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344053246] [2021-11-06 17:51:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:04,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:04,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:51:04,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465619299] [2021-11-06 17:51:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:04,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:51:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:51:04,738 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) [2021-11-06 17:51:04,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 17:51:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:07,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 8303 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:51:07,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:51:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:08,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:08,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344053246] [2021-11-06 17:51:08,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:51:08,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465619299] [2021-11-06 17:51:08,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465619299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:08,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:08,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:51:08,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335889998] [2021-11-06 17:51:08,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:08,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:08,496 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) [2021-11-06 17:51:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:09,122 INFO L93 Difference]: Finished difference Result 87544 states and 124694 transitions. [2021-11-06 17:51:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:09,123 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 [2021-11-06 17:51:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:09,195 INFO L225 Difference]: With dead ends: 87544 [2021-11-06 17:51:09,195 INFO L226 Difference]: Without dead ends: 36132 [2021-11-06 17:51:09,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36132 states. [2021-11-06 17:51:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36132 to 36124. [2021-11-06 17:51:10,433 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) [2021-11-06 17:51:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51571 transitions. [2021-11-06 17:51:10,511 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51571 transitions. Word has length 299 [2021-11-06 17:51:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:10,511 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51571 transitions. [2021-11-06 17:51:10,512 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) [2021-11-06 17:51:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51571 transitions. [2021-11-06 17:51:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-06 17:51:10,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:10,515 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:51:10,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:51:10,739 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 [2021-11-06 17:51:10,740 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)] === [2021-11-06 17:51:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1162024578, now seen corresponding path program 1 times [2021-11-06 17:51:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:10,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438469952] [2021-11-06 17:51:10,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:10,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:11,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438469952] [2021-11-06 17:51:11,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438469952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:11,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:11,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:11,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181264993] [2021-11-06 17:51:11,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:11,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:11,687 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) [2021-11-06 17:51:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:12,299 INFO L93 Difference]: Finished difference Result 71766 states and 102546 transitions. [2021-11-06 17:51:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:12,300 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 [2021-11-06 17:51:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:12,371 INFO L225 Difference]: With dead ends: 71766 [2021-11-06 17:51:12,372 INFO L226 Difference]: Without dead ends: 36124 [2021-11-06 17:51:12,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-06 17:51:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-06 17:51:13,056 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) [2021-11-06 17:51:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51567 transitions. [2021-11-06 17:51:13,126 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51567 transitions. Word has length 315 [2021-11-06 17:51:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:13,126 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51567 transitions. [2021-11-06 17:51:13,127 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) [2021-11-06 17:51:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51567 transitions. [2021-11-06 17:51:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-06 17:51:13,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:13,130 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:51:13,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:51:13,131 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)] === [2021-11-06 17:51:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2059417856, now seen corresponding path program 1 times [2021-11-06 17:51:13,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:13,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270079014] [2021-11-06 17:51:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:13,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:13,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:13,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270079014] [2021-11-06 17:51:13,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270079014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:13,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:13,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:13,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612012263] [2021-11-06 17:51:13,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:13,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:13,883 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) [2021-11-06 17:51:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:14,462 INFO L93 Difference]: Finished difference Result 71766 states and 102538 transitions. [2021-11-06 17:51:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:14,463 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 [2021-11-06 17:51:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:14,527 INFO L225 Difference]: With dead ends: 71766 [2021-11-06 17:51:14,527 INFO L226 Difference]: Without dead ends: 36124 [2021-11-06 17:51:14,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-06 17:51:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-06 17:51:15,277 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) [2021-11-06 17:51:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51563 transitions. [2021-11-06 17:51:15,343 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51563 transitions. Word has length 315 [2021-11-06 17:51:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:15,344 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51563 transitions. [2021-11-06 17:51:15,344 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) [2021-11-06 17:51:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51563 transitions. [2021-11-06 17:51:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-06 17:51:15,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:15,348 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:51:15,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:51:15,348 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)] === [2021-11-06 17:51:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1811271362, now seen corresponding path program 1 times [2021-11-06 17:51:15,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:15,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944273075] [2021-11-06 17:51:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:15,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:16,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:16,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944273075] [2021-11-06 17:51:16,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944273075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:16,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:16,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:16,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480785840] [2021-11-06 17:51:16,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:16,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:16,059 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) [2021-11-06 17:51:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:16,584 INFO L93 Difference]: Finished difference Result 71766 states and 102530 transitions. [2021-11-06 17:51:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:16,585 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 [2021-11-06 17:51:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:16,639 INFO L225 Difference]: With dead ends: 71766 [2021-11-06 17:51:16,639 INFO L226 Difference]: Without dead ends: 36124 [2021-11-06 17:51:16,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36124 states. [2021-11-06 17:51:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36124 to 36124. [2021-11-06 17:51:17,326 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) [2021-11-06 17:51:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36124 states to 36124 states and 51559 transitions. [2021-11-06 17:51:17,391 INFO L78 Accepts]: Start accepts. Automaton has 36124 states and 51559 transitions. Word has length 315 [2021-11-06 17:51:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:17,392 INFO L470 AbstractCegarLoop]: Abstraction has 36124 states and 51559 transitions. [2021-11-06 17:51:17,392 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) [2021-11-06 17:51:17,392 INFO L276 IsEmpty]: Start isEmpty. Operand 36124 states and 51559 transitions. [2021-11-06 17:51:17,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-06 17:51:17,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:17,396 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:51:17,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:51:17,397 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)] === [2021-11-06 17:51:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:17,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1111888636, now seen corresponding path program 1 times [2021-11-06 17:51:17,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:17,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162545748] [2021-11-06 17:51:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:17,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat