./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--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-08_1a-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 eca061443980e8d0803d9e641f2f399e16662610ff9edce1dac481c57666d01d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:05:41,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:05:41,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:05:41,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:05:41,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:05:41,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:05:41,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:05:41,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:05:41,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:05:41,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:05:41,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:05:41,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:05:41,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:05:41,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:05:41,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:05:41,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:05:41,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:05:41,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:05:41,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:05:41,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:05:41,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:05:41,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:05:41,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:05:41,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:05:41,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:05:41,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:05:41,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:05:41,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:05:41,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:05:41,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:05:41,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:05:41,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:05:41,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:05:41,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:05:41,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:05:41,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:05:41,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:05:41,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:05:41,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:05:41,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:05:41,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:05:41,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:05:41,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:05:41,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:05:41,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:05:41,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:05:41,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:05:41,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:05:41,674 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:05:41,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:05:41,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:05:41,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:05:41,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:05:41,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:05:41,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:05:41,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:05:41,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:05:41,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:05:41,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:05:41,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:05:41,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:05:41,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:05:41,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:05:41,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:05:41,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:05:41,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:05:41,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eca061443980e8d0803d9e641f2f399e16662610ff9edce1dac481c57666d01d [2021-11-05 18:05:41,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:05:42,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:05:42,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:05:42,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:05:42,012 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:05:42,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-05 18:05:42,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee25d42d/a7587d76071e4f179db7510ac6637f58/FLAG469566af1 [2021-11-05 18:05:42,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:05:42,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-05 18:05:42,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee25d42d/a7587d76071e4f179db7510ac6637f58/FLAG469566af1 [2021-11-05 18:05:43,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee25d42d/a7587d76071e4f179db7510ac6637f58 [2021-11-05 18:05:43,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:05:43,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:05:43,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:05:43,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:05:43,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:05:43,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:05:43" (1/1) ... [2021-11-05 18:05:43,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab48645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:43, skipping insertion in model container [2021-11-05 18:05:43,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:05:43" (1/1) ... [2021-11-05 18:05:43,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:05:43,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:05:46,137 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i[342799,342812] [2021-11-05 18:05:46,235 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 18:05:46,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:05:46,292 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:05:46,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i[342799,342812] [2021-11-05 18:05:46,904 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 18:05:46,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:05:47,015 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:05:47,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47 WrapperNode [2021-11-05 18:05:47,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:05:47,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:05:47,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:05:47,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:05:47,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:47,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:49,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:05:49,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:05:49,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:05:49,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:05:49,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:49,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:50,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:50,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:52,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:52,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:52,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:53,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:05:53,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:05:53,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:05:53,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:05:53,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (1/1) ... [2021-11-05 18:05:53,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:05:53,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:05:53,373 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 18:05:53,384 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 18:05:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 18:05:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:05:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:05:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-05 18:05:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:05:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-05 18:05:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:05:53,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:05:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:05:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:05:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:05:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:05:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:07:12,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:07:12,531 INFO L299 CfgBuilder]: Removed 13566 assume(true) statements. [2021-11-05 18:07:12,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:07:12 BoogieIcfgContainer [2021-11-05 18:07:12,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:07:12,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:07:12,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:07:12,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:07:12,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:05:43" (1/3) ... [2021-11-05 18:07:12,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648ead48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:07:12, skipping insertion in model container [2021-11-05 18:07:12,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:05:47" (2/3) ... [2021-11-05 18:07:12,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648ead48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:07:12, skipping insertion in model container [2021-11-05 18:07:12,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:07:12" (3/3) ... [2021-11-05 18:07:12,559 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-05 18:07:12,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:07:12,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 18:07:12,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:07:12,683 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 18:07:12,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 18:07:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 17762 states, 17724 states have (on average 1.4562739787858272) internal successors, (25811), 17725 states have internal predecessors, (25811), 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 18:07:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-05 18:07:12,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:12,939 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] [2021-11-05 18:07:12,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 125872945, now seen corresponding path program 1 times [2021-11-05 18:07:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:12,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420017317] [2021-11-05 18:07:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:12,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:14,199 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 18:07:14,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:14,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420017317] [2021-11-05 18:07:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420017317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:14,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:14,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:07:14,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195092620] [2021-11-05 18:07:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:14,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:07:14,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:07:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:07:14,298 INFO L87 Difference]: Start difference. First operand has 17762 states, 17724 states have (on average 1.4562739787858272) internal successors, (25811), 17725 states have internal predecessors, (25811), 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 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 18:07:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:14,851 INFO L93 Difference]: Finished difference Result 35520 states and 51787 transitions. [2021-11-05 18:07:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:07:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 281 [2021-11-05 18:07:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:14,974 INFO L225 Difference]: With dead ends: 35520 [2021-11-05 18:07:14,974 INFO L226 Difference]: Without dead ends: 17735 [2021-11-05 18:07:15,042 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 18:07:15,047 INFO L933 BasicCegarLoop]: 25297 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, 25297 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:15,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25297 Invalid, 0 Unknown, 0 Unchecked, 63.18ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:07:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2021-11-05 18:07:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 17735. [2021-11-05 18:07:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17735 states, 17698 states have (on average 1.4227031302972086) internal successors, (25179), 17698 states have internal predecessors, (25179), 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 18:07:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17735 states to 17735 states and 25247 transitions. [2021-11-05 18:07:15,905 INFO L78 Accepts]: Start accepts. Automaton has 17735 states and 25247 transitions. Word has length 281 [2021-11-05 18:07:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:07:15,905 INFO L470 AbstractCegarLoop]: Abstraction has 17735 states and 25247 transitions. [2021-11-05 18:07:15,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 18:07:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 17735 states and 25247 transitions. [2021-11-05 18:07:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-05 18:07:15,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:15,911 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] [2021-11-05 18:07:15,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:07:15,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -960407475, now seen corresponding path program 1 times [2021-11-05 18:07:15,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:15,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750832558] [2021-11-05 18:07:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:15,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:16,749 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 18:07:16,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:16,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750832558] [2021-11-05 18:07:16,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750832558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:16,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:16,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:07:16,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276407750] [2021-11-05 18:07:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:16,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:07:16,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:07:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:16,758 INFO L87 Difference]: Start difference. First operand 17735 states and 25247 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:07:18,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:07:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:20,031 INFO L93 Difference]: Finished difference Result 52629 states and 75137 transitions. [2021-11-05 18:07:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:07:20,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 281 [2021-11-05 18:07:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:20,195 INFO L225 Difference]: With dead ends: 52629 [2021-11-05 18:07:20,196 INFO L226 Difference]: Without dead ends: 35153 [2021-11-05 18:07:20,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:20,263 INFO L933 BasicCegarLoop]: 25278 mSDtfsCounter, 24940 mSDsluCounter, 25191 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2166.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24940 SdHoareTripleChecker+Valid, 50469 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2318.22ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:20,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24940 Valid, 50469 Invalid, 15 Unknown, 0 Unchecked, 80.44ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2318.22ms Time] [2021-11-05 18:07:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-05 18:07:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2021-11-05 18:07:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35153 states, 35080 states have (on average 1.4258266818700114) internal successors, (50018), 35080 states have internal predecessors, (50018), 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 18:07:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50154 transitions. [2021-11-05 18:07:21,351 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50154 transitions. Word has length 281 [2021-11-05 18:07:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:07:21,353 INFO L470 AbstractCegarLoop]: Abstraction has 35153 states and 50154 transitions. [2021-11-05 18:07:21,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:07:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50154 transitions. [2021-11-05 18:07:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-05 18:07:21,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:21,365 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] [2021-11-05 18:07:21,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:07:21,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1297674011, now seen corresponding path program 1 times [2021-11-05 18:07:21,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:21,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496817326] [2021-11-05 18:07:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:21,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:22,377 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 18:07:22,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:22,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496817326] [2021-11-05 18:07:22,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496817326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:22,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:22,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:07:22,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202565219] [2021-11-05 18:07:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:22,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:07:22,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:07:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:22,381 INFO L87 Difference]: Start difference. First operand 35153 states and 50154 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:23,221 INFO L93 Difference]: Finished difference Result 70047 states and 100041 transitions. [2021-11-05 18:07:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:07:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 286 [2021-11-05 18:07:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:23,359 INFO L225 Difference]: With dead ends: 70047 [2021-11-05 18:07:23,359 INFO L226 Difference]: Without dead ends: 35153 [2021-11-05 18:07:23,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:23,437 INFO L933 BasicCegarLoop]: 25245 mSDtfsCounter, 24974 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24974 SdHoareTripleChecker+Valid, 25245 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.89ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:23,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24974 Valid, 25245 Invalid, 1 Unknown, 0 Unchecked, 36.82ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.89ms Time] [2021-11-05 18:07:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-05 18:07:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2021-11-05 18:07:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35153 states, 35080 states have (on average 1.4257981755986318) internal successors, (50017), 35080 states have internal predecessors, (50017), 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 18:07:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50153 transitions. [2021-11-05 18:07:24,348 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50153 transitions. Word has length 286 [2021-11-05 18:07:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:07:24,348 INFO L470 AbstractCegarLoop]: Abstraction has 35153 states and 50153 transitions. [2021-11-05 18:07:24,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50153 transitions. [2021-11-05 18:07:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-05 18:07:24,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:24,353 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] [2021-11-05 18:07:24,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:07:24,354 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 286556761, now seen corresponding path program 1 times [2021-11-05 18:07:24,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:24,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802682720] [2021-11-05 18:07:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:24,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:25,356 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 18:07:25,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:25,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802682720] [2021-11-05 18:07:25,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802682720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:25,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:25,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:07:25,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008970463] [2021-11-05 18:07:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:25,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:07:25,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:07:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:25,359 INFO L87 Difference]: Start difference. First operand 35153 states and 50153 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:26,319 INFO L93 Difference]: Finished difference Result 70047 states and 100039 transitions. [2021-11-05 18:07:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:07:26,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 286 [2021-11-05 18:07:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:26,445 INFO L225 Difference]: With dead ends: 70047 [2021-11-05 18:07:26,445 INFO L226 Difference]: Without dead ends: 35153 [2021-11-05 18:07:26,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:26,527 INFO L933 BasicCegarLoop]: 25244 mSDtfsCounter, 24972 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24972 SdHoareTripleChecker+Valid, 25244 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.78ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24972 Valid, 25244 Invalid, 1 Unknown, 0 Unchecked, 37.48ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.78ms Time] [2021-11-05 18:07:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-05 18:07:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2021-11-05 18:07:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35153 states, 35080 states have (on average 1.425769669327252) internal successors, (50016), 35080 states have internal predecessors, (50016), 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 18:07:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50152 transitions. [2021-11-05 18:07:27,677 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50152 transitions. Word has length 286 [2021-11-05 18:07:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:07:27,678 INFO L470 AbstractCegarLoop]: Abstraction has 35153 states and 50152 transitions. [2021-11-05 18:07:27,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50152 transitions. [2021-11-05 18:07:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-05 18:07:27,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:27,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:07:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:07:27,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash -300249253, now seen corresponding path program 1 times [2021-11-05 18:07:27,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:27,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898103241] [2021-11-05 18:07:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:27,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:28,412 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 18:07:28,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:28,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898103241] [2021-11-05 18:07:28,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898103241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:28,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:28,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:07:28,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344082234] [2021-11-05 18:07:28,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:28,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:07:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:07:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:28,416 INFO L87 Difference]: Start difference. First operand 35153 states and 50152 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:29,702 INFO L93 Difference]: Finished difference Result 70047 states and 100037 transitions. [2021-11-05 18:07:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:07:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 286 [2021-11-05 18:07:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:29,833 INFO L225 Difference]: With dead ends: 70047 [2021-11-05 18:07:29,834 INFO L226 Difference]: Without dead ends: 35153 [2021-11-05 18:07:29,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:07:29,899 INFO L933 BasicCegarLoop]: 25243 mSDtfsCounter, 24969 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24969 SdHoareTripleChecker+Valid, 25243 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.98ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:29,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24969 Valid, 25243 Invalid, 1 Unknown, 0 Unchecked, 48.17ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 4.98ms Time] [2021-11-05 18:07:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2021-11-05 18:07:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2021-11-05 18:07:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35153 states, 35080 states have (on average 1.4257411630558723) internal successors, (50015), 35080 states have internal predecessors, (50015), 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 18:07:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50151 transitions. [2021-11-05 18:07:30,927 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50151 transitions. Word has length 286 [2021-11-05 18:07:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:07:30,928 INFO L470 AbstractCegarLoop]: Abstraction has 35153 states and 50151 transitions. [2021-11-05 18:07:30,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 18:07:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50151 transitions. [2021-11-05 18:07:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-05 18:07:30,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:07:30,932 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] [2021-11-05 18:07:30,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:07:30,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 18:07:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:07:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash 400815325, now seen corresponding path program 1 times [2021-11-05 18:07:30,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:07:30,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287634309] [2021-11-05 18:07:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:07:30,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:07:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:07:31,859 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 18:07:31,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:07:31,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287634309] [2021-11-05 18:07:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287634309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:07:31,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:07:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:07:31,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732967121] [2021-11-05 18:07:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:07:31,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:07:31,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:07:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:07:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:07:31,863 INFO L87 Difference]: Start difference. First operand 35153 states and 50151 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 4 states have internal predecessors, (286), 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 18:07:33,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:07:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:07:39,339 INFO L93 Difference]: Finished difference Result 101757 states and 145541 transitions. [2021-11-05 18:07:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:07:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 4 states have internal predecessors, (286), 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 286 [2021-11-05 18:07:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:07:39,661 INFO L225 Difference]: With dead ends: 101757 [2021-11-05 18:07:39,661 INFO L226 Difference]: Without dead ends: 66863 [2021-11-05 18:07:39,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.78ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:07:39,774 INFO L933 BasicCegarLoop]: 30962 mSDtfsCounter, 64022 mSDsluCounter, 54187 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 1098 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4957.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64022 SdHoareTripleChecker+Valid, 85149 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 142.98ms SdHoareTripleChecker+Time, 1098 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5646.60ms IncrementalHoareTripleChecker+Time [2021-11-05 18:07:39,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64022 Valid, 85149 Invalid, 2584 Unknown, 0 Unchecked, 142.98ms Time], IncrementalHoareTripleChecker [1098 Valid, 1485 Invalid, 1 Unknown, 0 Unchecked, 5646.60ms Time] [2021-11-05 18:07:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66863 states.