./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.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 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:33:46,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:33:46,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:33:46,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:33:46,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:33:46,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:33:46,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:33:46,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:33:46,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:33:46,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:33:46,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:33:46,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:33:46,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:33:46,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:33:46,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:33:46,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:33:46,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:33:46,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:33:46,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:33:46,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:33:46,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:33:46,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:33:46,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:33:46,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:33:46,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:33:46,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:33:46,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:33:46,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:33:46,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:33:46,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:33:46,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:33:46,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:33:46,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:33:46,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:33:46,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:33:46,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:33:46,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:33:46,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:33:46,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:33:46,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:33:46,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:33:46,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:33:46,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:33:46,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:33:46,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:33:46,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:33:46,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:33:46,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:33:46,330 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:33:46,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:33:46,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:33:46,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:33:46,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:33:46,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:33:46,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:33:46,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:33:46,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:33:46,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:33:46,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:33:46,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:33:46,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:33:46,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:33:46,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:33:46,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:33:46,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:33:46,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:33:46,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e7778ced54570c612880d3f2f5d48e6e2d3dc55afd632628e45d31cdc74c58 [2021-11-07 17:33:46,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:33:46,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:33:46,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:33:46,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:33:46,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:33:46,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-07 17:33:46,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b6a3284/dc65eac0144341e596f90b69b939c9d2/FLAGc5b67def3 [2021-11-07 17:33:47,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:33:47,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-07 17:33:47,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b6a3284/dc65eac0144341e596f90b69b939c9d2/FLAGc5b67def3 [2021-11-07 17:33:47,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83b6a3284/dc65eac0144341e596f90b69b939c9d2 [2021-11-07 17:33:47,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:33:47,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:33:47,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:33:47,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:33:47,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:33:47,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:33:47" (1/1) ... [2021-11-07 17:33:47,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b521dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:47, skipping insertion in model container [2021-11-07 17:33:47,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:33:47" (1/1) ... [2021-11-07 17:33:47,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:33:47,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:33:49,201 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-07 17:33:49,204 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-07 17:33:49,204 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-07 17:33:49,205 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-07 17:33:49,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:33:49,259 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:33:49,477 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329615,329628] [2021-11-07 17:33:49,479 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329784,329797] [2021-11-07 17:33:49,479 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[329951,329964] [2021-11-07 17:33:49,479 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i[330119,330132] [2021-11-07 17:33:49,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:33:49,581 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:33:49,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49 WrapperNode [2021-11-07 17:33:49,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:33:49,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:33:49,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:33:49,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:33:49,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:49,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:53,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:33:53,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:33:53,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:33:53,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:33:53,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:53,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:53,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:53,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:55,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:55,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:55,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:56,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:33:56,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:33:56,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:33:56,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:33:56,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (1/1) ... [2021-11-07 17:33:56,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:33:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:33:56,375 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) [2021-11-07 17:33:56,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 17:33:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:33:56,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:33:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:33:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:33:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:33:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:33:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:33:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:35:10,778 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 17:35:10,778 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:35:10,779 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:35:10,782 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:35:10,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:35:10,844 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2021-11-07 17:35:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:10 BoogieIcfgContainer [2021-11-07 17:35:10,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:35:10,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:35:10,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:35:10,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:35:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:33:47" (1/3) ... [2021-11-07 17:35:10,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366934b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:10, skipping insertion in model container [2021-11-07 17:35:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:33:49" (2/3) ... [2021-11-07 17:35:10,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366934b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:10, skipping insertion in model container [2021-11-07 17:35:10,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:10" (3/3) ... [2021-11-07 17:35:10,871 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-07 17:35:10,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:35:10,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-07 17:35:10,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:35:10,994 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 [2021-11-07 17:35:10,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-07 17:35:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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) [2021-11-07 17:35:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 17:35:11,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:11,226 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] [2021-11-07 17:35:11,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1663244342, now seen corresponding path program 1 times [2021-11-07 17:35:11,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:11,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418369912] [2021-11-07 17:35:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:11,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:11,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:11,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418369912] [2021-11-07 17:35:11,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418369912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:11,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:11,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:11,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727693187] [2021-11-07 17:35:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:11,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:11,821 INFO L87 Difference]: Start difference. First operand has 22069 states, 22035 states have (on average 1.3668708872248696) internal successors, (30119), 22068 states have internal predecessors, (30119), 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) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-07 17:35:13,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:15,253 INFO L93 Difference]: Finished difference Result 65938 states and 90016 transitions. [2021-11-07 17:35:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-07 17:35:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:15,402 INFO L225 Difference]: With dead ends: 65938 [2021-11-07 17:35:15,402 INFO L226 Difference]: Without dead ends: 43704 [2021-11-07 17:35:15,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:15,459 INFO L933 BasicCegarLoop]: 30074 mSDtfsCounter, 29863 mSDsluCounter, 30029 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2065.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29863 SdHoareTripleChecker+Valid, 60103 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2194.80ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29863 Valid, 60103 Invalid, 14 Unknown, 0 Unchecked, 95.47ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2194.80ms Time] [2021-11-07 17:35:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43704 states. [2021-11-07 17:35:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43704 to 43692. [2021-11-07 17:35:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43692 states, 43658 states have (on average 1.3620184158687985) internal successors, (59463), 43691 states have internal predecessors, (59463), 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) [2021-11-07 17:35:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43692 states to 43692 states and 59463 transitions. [2021-11-07 17:35:16,703 INFO L78 Accepts]: Start accepts. Automaton has 43692 states and 59463 transitions. Word has length 30 [2021-11-07 17:35:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:16,705 INFO L470 AbstractCegarLoop]: Abstraction has 43692 states and 59463 transitions. [2021-11-07 17:35:16,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-07 17:35:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 43692 states and 59463 transitions. [2021-11-07 17:35:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 17:35:16,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:16,709 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] [2021-11-07 17:35:16,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:35:16,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:16,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1234824287, now seen corresponding path program 1 times [2021-11-07 17:35:16,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:16,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813099319] [2021-11-07 17:35:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:16,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:16,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:16,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813099319] [2021-11-07 17:35:16,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813099319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:16,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:16,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:16,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314058041] [2021-11-07 17:35:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:16,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:16,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:16,912 INFO L87 Difference]: Start difference. First operand 43692 states and 59463 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-07 17:35:18,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:20,667 INFO L93 Difference]: Finished difference Result 107102 states and 145619 transitions. [2021-11-07 17:35:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-07 17:35:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:20,848 INFO L225 Difference]: With dead ends: 107102 [2021-11-07 17:35:20,849 INFO L226 Difference]: Without dead ends: 63454 [2021-11-07 17:35:20,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:20,947 INFO L933 BasicCegarLoop]: 29813 mSDtfsCounter, 13460 mSDsluCounter, 29751 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2197.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13460 SdHoareTripleChecker+Valid, 59564 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.06ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2353.99ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:20,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13460 Valid, 59564 Invalid, 88 Unknown, 0 Unchecked, 45.06ms Time], IncrementalHoareTripleChecker [30 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2353.99ms Time] [2021-11-07 17:35:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63454 states. [2021-11-07 17:35:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63454 to 62754. [2021-11-07 17:35:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62754 states, 62720 states have (on average 1.360172193877551) internal successors, (85310), 62753 states have internal predecessors, (85310), 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) [2021-11-07 17:35:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62754 states to 62754 states and 85310 transitions. [2021-11-07 17:35:22,473 INFO L78 Accepts]: Start accepts. Automaton has 62754 states and 85310 transitions. Word has length 31 [2021-11-07 17:35:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:22,474 INFO L470 AbstractCegarLoop]: Abstraction has 62754 states and 85310 transitions. [2021-11-07 17:35:22,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-07 17:35:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 62754 states and 85310 transitions. [2021-11-07 17:35:22,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 17:35:22,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:22,481 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] [2021-11-07 17:35:22,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:35:22,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1128421566, now seen corresponding path program 1 times [2021-11-07 17:35:22,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:22,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982773193] [2021-11-07 17:35:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:22,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:22,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:22,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982773193] [2021-11-07 17:35:22,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982773193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:22,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:22,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:22,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706587619] [2021-11-07 17:35:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:22,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:22,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:22,653 INFO L87 Difference]: Start difference. First operand 62754 states and 85310 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-07 17:35:24,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:26,732 INFO L93 Difference]: Finished difference Result 170594 states and 231892 transitions. [2021-11-07 17:35:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-07 17:35:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:27,118 INFO L225 Difference]: With dead ends: 170594 [2021-11-07 17:35:27,120 INFO L226 Difference]: Without dead ends: 107884 [2021-11-07 17:35:27,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:27,267 INFO L933 BasicCegarLoop]: 29821 mSDtfsCounter, 27022 mSDsluCounter, 26565 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2314.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27022 SdHoareTripleChecker+Valid, 56386 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.15ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2509.55ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:27,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27022 Valid, 56386 Invalid, 54 Unknown, 0 Unchecked, 40.15ms Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2509.55ms Time] [2021-11-07 17:35:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107884 states. [2021-11-07 17:35:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107884 to 107320. [2021-11-07 17:35:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107320 states, 107286 states have (on average 1.3600469772384094) internal successors, (145914), 107319 states have internal predecessors, (145914), 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) [2021-11-07 17:35:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107320 states to 107320 states and 145914 transitions. [2021-11-07 17:35:29,843 INFO L78 Accepts]: Start accepts. Automaton has 107320 states and 145914 transitions. Word has length 36 [2021-11-07 17:35:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:29,844 INFO L470 AbstractCegarLoop]: Abstraction has 107320 states and 145914 transitions. [2021-11-07 17:35:29,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-07 17:35:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 107320 states and 145914 transitions. [2021-11-07 17:35:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 17:35:29,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:29,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-11-07 17:35:29,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:35:29,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -527361994, now seen corresponding path program 1 times [2021-11-07 17:35:29,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:29,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274695359] [2021-11-07 17:35:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:29,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:29,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:29,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274695359] [2021-11-07 17:35:29,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274695359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:29,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:29,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:29,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935192272] [2021-11-07 17:35:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:29,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:29,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:29,992 INFO L87 Difference]: Start difference. First operand 107320 states and 145914 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-07 17:35:32,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:35,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:35,268 INFO L93 Difference]: Finished difference Result 259718 states and 353068 transitions. [2021-11-07 17:35:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:35,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-07 17:35:35,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:35,695 INFO L225 Difference]: With dead ends: 259718 [2021-11-07 17:35:35,695 INFO L226 Difference]: Without dead ends: 152442 [2021-11-07 17:35:35,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:35,981 INFO L933 BasicCegarLoop]: 29826 mSDtfsCounter, 23889 mSDsluCounter, 29691 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2128.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23889 SdHoareTripleChecker+Valid, 59517 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2291.19ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:35,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23889 Valid, 59517 Invalid, 46 Unknown, 0 Unchecked, 43.17ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2291.19ms Time] [2021-11-07 17:35:36,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152442 states. [2021-11-07 17:35:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152442 to 151878. [2021-11-07 17:35:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151878 states, 151844 states have (on average 1.3599351966491926) internal successors, (206498), 151877 states have internal predecessors, (206498), 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) [2021-11-07 17:35:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151878 states to 151878 states and 206498 transitions. [2021-11-07 17:35:39,382 INFO L78 Accepts]: Start accepts. Automaton has 151878 states and 206498 transitions. Word has length 51 [2021-11-07 17:35:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:39,382 INFO L470 AbstractCegarLoop]: Abstraction has 151878 states and 206498 transitions. [2021-11-07 17:35:39,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-07 17:35:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 151878 states and 206498 transitions. [2021-11-07 17:35:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 17:35:39,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:39,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-07 17:35:39,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:35:39,385 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1866639490, now seen corresponding path program 1 times [2021-11-07 17:35:39,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:39,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936539659] [2021-11-07 17:35:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:39,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:39,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:39,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936539659] [2021-11-07 17:35:39,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936539659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:39,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:39,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:39,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639963597] [2021-11-07 17:35:39,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:39,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:39,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:39,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:39,492 INFO L87 Difference]: Start difference. First operand 151878 states and 206498 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 17:35:41,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:45,212 INFO L93 Difference]: Finished difference Result 303712 states and 412947 transitions. [2021-11-07 17:35:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-07 17:35:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:45,882 INFO L225 Difference]: With dead ends: 303712 [2021-11-07 17:35:45,882 INFO L226 Difference]: Without dead ends: 227649 [2021-11-07 17:35:46,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:46,132 INFO L933 BasicCegarLoop]: 59465 mSDtfsCounter, 29692 mSDsluCounter, 29761 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2060.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29692 SdHoareTripleChecker+Valid, 89226 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 237.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2230.36ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:46,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29692 Valid, 89226 Invalid, 10 Unknown, 0 Unchecked, 237.65ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2230.36ms Time] [2021-11-07 17:35:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227649 states. [2021-11-07 17:35:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227649 to 227627. [2021-11-07 17:35:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227627 states, 227593 states have (on average 1.360046222862742) internal successors, (309537), 227626 states have internal predecessors, (309537), 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) [2021-11-07 17:35:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227627 states to 227627 states and 309537 transitions. [2021-11-07 17:35:52,058 INFO L78 Accepts]: Start accepts. Automaton has 227627 states and 309537 transitions. Word has length 58 [2021-11-07 17:35:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:52,062 INFO L470 AbstractCegarLoop]: Abstraction has 227627 states and 309537 transitions. [2021-11-07 17:35:52,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 17:35:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 227627 states and 309537 transitions. [2021-11-07 17:35:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 17:35:52,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:52,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-07 17:35:52,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:35:52,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-07 17:35:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2124804928, now seen corresponding path program 1 times [2021-11-07 17:35:52,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:52,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889970609] [2021-11-07 17:35:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:52,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 17:35:52,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:52,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889970609] [2021-11-07 17:35:52,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889970609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:52,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:52,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:52,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507064138] [2021-11-07 17:35:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:52,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:35:52,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:35:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:35:52,404 INFO L87 Difference]: Start difference. First operand 227627 states and 309537 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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)