./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.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 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:12:45,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:12:45,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:12:45,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:12:45,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:12:45,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:12:45,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:12:45,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:12:45,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:12:45,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:12:45,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:12:45,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:12:45,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:12:45,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:12:45,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:12:45,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:12:45,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:12:45,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:12:45,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:12:45,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:12:45,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:12:45,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:12:45,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:12:45,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:12:45,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:12:45,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:12:45,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:12:45,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:12:45,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:12:45,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:12:45,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:12:45,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:12:45,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:12:45,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:12:45,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:12:45,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:12:45,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:12:45,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:12:45,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:12:45,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:12:45,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:12:45,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:12:45,331 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:12:45,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:12:45,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:12:45,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:12:45,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:12:45,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:12:45,333 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:12:45,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:12:45,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:12:45,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:12:45,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:12:45,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:12:45,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:12:45,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:12:45,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:12:45,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:12:45,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:12:45,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:12:45,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:12:45,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:12:45,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:12:45,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:12:45,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:12:45,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:12:45,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92fce7e8733fef6ba8e1d7d5b12f8bb98a90f9164efa69e5285fd66b003407a0 [2021-11-07 19:12:45,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:12:45,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:12:45,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:12:45,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:12:45,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:12:45,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-07 19:12:45,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799380e68/194c442727204cc5ac8a4ea5a238812f/FLAGd67dd47cd [2021-11-07 19:12:46,219 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:12:46,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-07 19:12:46,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799380e68/194c442727204cc5ac8a4ea5a238812f/FLAGd67dd47cd [2021-11-07 19:12:46,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799380e68/194c442727204cc5ac8a4ea5a238812f [2021-11-07 19:12:46,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:12:46,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:12:46,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:12:46,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:12:46,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:12:46,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:12:46" (1/1) ... [2021-11-07 19:12:46,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4459b4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:46, skipping insertion in model container [2021-11-07 19:12:46,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:12:46" (1/1) ... [2021-11-07 19:12:46,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:12:46,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:12:51,194 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-07 19:12:51,197 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-07 19:12:51,197 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-07 19:12:51,198 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-07 19:12:51,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:12:51,328 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:12:51,793 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622479,622492] [2021-11-07 19:12:51,794 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622648,622661] [2021-11-07 19:12:51,795 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622815,622828] [2021-11-07 19:12:51,795 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[622983,622996] [2021-11-07 19:12:51,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:12:52,058 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:12:52,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52 WrapperNode [2021-11-07 19:12:52,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:12:52,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:12:52,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:12:52,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:12:52,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:52,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:55,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:12:55,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:12:55,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:12:55,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:12:55,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:55,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:56,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:56,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:57,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:58,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:58,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:59,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:12:59,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:12:59,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:12:59,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:12:59,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (1/1) ... [2021-11-07 19:12:59,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:12:59,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:12:59,196 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 19:12:59,202 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 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:12:59,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:12:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:12:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:12:59,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:17:18,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:17:18,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 19:17:18,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 19:17:18,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:17:18,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-07 19:17:18,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#3: ldv_switch_3_#res := 0; [2021-11-07 19:17:18,261 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 19:17:18,263 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:17:18,263 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:17:18,269 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 19:17:18,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:17:18,318 INFO L299 CfgBuilder]: Removed 28701 assume(true) statements. [2021-11-07 19:17:18,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:17:18 BoogieIcfgContainer [2021-11-07 19:17:18,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:17:18,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:17:18,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:17:18,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:17:18,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:12:46" (1/3) ... [2021-11-07 19:17:18,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d9cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:17:18, skipping insertion in model container [2021-11-07 19:17:18,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:12:52" (2/3) ... [2021-11-07 19:17:18,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d9cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:17:18, skipping insertion in model container [2021-11-07 19:17:18,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:17:18" (3/3) ... [2021-11-07 19:17:18,342 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-07 19:17:18,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:17:18,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-07 19:17:18,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:17:18,431 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 19:17:18,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-07 19:17:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 22956 states, 22900 states have (on average 1.265458515283843) internal successors, (28979), 22955 states have internal predecessors, (28979), 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 19:17:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 19:17:18,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:18,645 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] [2021-11-07 19:17:18,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 19:17:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1426199353, now seen corresponding path program 1 times [2021-11-07 19:17:18,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:18,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705533025] [2021-11-07 19:17:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:18,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:19,595 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 19:17:19,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705533025] [2021-11-07 19:17:19,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705533025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:19,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:19,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:19,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849512947] [2021-11-07 19:17:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:19,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:19,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:19,663 INFO L87 Difference]: Start difference. First operand has 22956 states, 22900 states have (on average 1.265458515283843) internal successors, (28979), 22955 states have internal predecessors, (28979), 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 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 19:17:21,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:23,599 INFO L93 Difference]: Finished difference Result 66958 states and 84323 transitions. [2021-11-07 19:17:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 193 [2021-11-07 19:17:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:23,761 INFO L225 Difference]: With dead ends: 66958 [2021-11-07 19:17:23,762 INFO L226 Difference]: Without dead ends: 43875 [2021-11-07 19:17:23,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:23,818 INFO L933 BasicCegarLoop]: 28169 mSDtfsCounter, 27150 mSDsluCounter, 28079 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2345.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27150 SdHoareTripleChecker+Valid, 56248 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 133.83ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2450.52ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:23,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27150 Valid, 56248 Invalid, 39 Unknown, 0 Unchecked, 133.83ms Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2450.52ms Time] [2021-11-07 19:17:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43875 states. [2021-11-07 19:17:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43875 to 43859. [2021-11-07 19:17:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43859 states, 43803 states have (on average 1.2288656028125928) internal successors, (53828), 43858 states have internal predecessors, (53828), 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 19:17:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 53828 transitions. [2021-11-07 19:17:24,988 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 53828 transitions. Word has length 193 [2021-11-07 19:17:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:24,989 INFO L470 AbstractCegarLoop]: Abstraction has 43859 states and 53828 transitions. [2021-11-07 19:17:24,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 19:17:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 53828 transitions. [2021-11-07 19:17:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 19:17:24,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:24,995 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] [2021-11-07 19:17:24,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:17:24,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 19:17:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2083684996, now seen corresponding path program 1 times [2021-11-07 19:17:24,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:24,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76195703] [2021-11-07 19:17:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:24,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:25,733 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 19:17:25,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:25,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76195703] [2021-11-07 19:17:25,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76195703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:25,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:25,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:25,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892371186] [2021-11-07 19:17:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:25,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:25,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:25,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:25,735 INFO L87 Difference]: Start difference. First operand 43859 states and 53828 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 19:17:27,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:29,127 INFO L93 Difference]: Finished difference Result 86778 states and 106536 transitions. [2021-11-07 19:17:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2021-11-07 19:17:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:29,220 INFO L225 Difference]: With dead ends: 86778 [2021-11-07 19:17:29,220 INFO L226 Difference]: Without dead ends: 43387 [2021-11-07 19:17:29,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:29,295 INFO L933 BasicCegarLoop]: 27027 mSDtfsCounter, 26490 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2189.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26490 SdHoareTripleChecker+Valid, 27551 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2271.09ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:29,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26490 Valid, 27551 Invalid, 6 Unknown, 0 Unchecked, 36.03ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2271.09ms Time] [2021-11-07 19:17:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43387 states. [2021-11-07 19:17:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43387 to 43387. [2021-11-07 19:17:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43387 states, 43333 states have (on average 1.2283940645697276) internal successors, (53230), 43386 states have internal predecessors, (53230), 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 19:17:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43387 states to 43387 states and 53230 transitions. [2021-11-07 19:17:30,398 INFO L78 Accepts]: Start accepts. Automaton has 43387 states and 53230 transitions. Word has length 207 [2021-11-07 19:17:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:30,399 INFO L470 AbstractCegarLoop]: Abstraction has 43387 states and 53230 transitions. [2021-11-07 19:17:30,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 19:17:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 43387 states and 53230 transitions. [2021-11-07 19:17:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 19:17:30,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:30,406 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] [2021-11-07 19:17:30,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:17:30,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 19:17:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash -384875294, now seen corresponding path program 1 times [2021-11-07 19:17:30,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:30,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196283993] [2021-11-07 19:17:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:30,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:30,881 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 19:17:30,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:30,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196283993] [2021-11-07 19:17:30,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196283993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:30,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:30,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:30,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264761954] [2021-11-07 19:17:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:30,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:30,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:30,883 INFO L87 Difference]: Start difference. First operand 43387 states and 53230 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 19:17:33,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:35,241 INFO L93 Difference]: Finished difference Result 121943 states and 149558 transitions. [2021-11-07 19:17:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:35,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 214 [2021-11-07 19:17:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:35,459 INFO L225 Difference]: With dead ends: 121943 [2021-11-07 19:17:35,459 INFO L226 Difference]: Without dead ends: 79024 [2021-11-07 19:17:35,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:35,528 INFO L933 BasicCegarLoop]: 28342 mSDtfsCounter, 21940 mSDsluCounter, 26926 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2799.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21940 SdHoareTripleChecker+Valid, 55268 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.20ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2920.07ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:35,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21940 Valid, 55268 Invalid, 120 Unknown, 0 Unchecked, 46.20ms Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 2920.07ms Time] [2021-11-07 19:17:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79024 states. [2021-11-07 19:17:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79024 to 76014. [2021-11-07 19:17:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76014 states, 75960 states have (on average 1.2279489204844656) internal successors, (93275), 76013 states have internal predecessors, (93275), 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 19:17:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76014 states to 76014 states and 93275 transitions. [2021-11-07 19:17:37,350 INFO L78 Accepts]: Start accepts. Automaton has 76014 states and 93275 transitions. Word has length 214 [2021-11-07 19:17:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:37,350 INFO L470 AbstractCegarLoop]: Abstraction has 76014 states and 93275 transitions. [2021-11-07 19:17:37,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 19:17:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 76014 states and 93275 transitions. [2021-11-07 19:17:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 19:17:37,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:37,356 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:37,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:17:37,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 19:17:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:37,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1276403110, now seen corresponding path program 1 times [2021-11-07 19:17:37,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:37,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030349096] [2021-11-07 19:17:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:37,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:17:37,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:37,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030349096] [2021-11-07 19:17:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030349096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:37,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:37,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986801638] [2021-11-07 19:17:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:37,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:37,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:37,965 INFO L87 Difference]: Start difference. First operand 76014 states and 93275 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 19:17:40,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:41,997 INFO L93 Difference]: Finished difference Result 151568 states and 186038 transitions. [2021-11-07 19:17:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-07 19:17:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:42,250 INFO L225 Difference]: With dead ends: 151568 [2021-11-07 19:17:42,251 INFO L226 Difference]: Without dead ends: 113610 [2021-11-07 19:17:42,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:42,322 INFO L933 BasicCegarLoop]: 53227 mSDtfsCounter, 26203 mSDsluCounter, 27002 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2343.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26203 SdHoareTripleChecker+Valid, 80229 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2451.38ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:42,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26203 Valid, 80229 Invalid, 35 Unknown, 0 Unchecked, 51.78ms Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2451.38ms Time] [2021-11-07 19:17:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113610 states. [2021-11-07 19:17:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113610 to 113598. [2021-11-07 19:17:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113598 states, 113544 states have (on average 1.2281142112308885) internal successors, (139445), 113597 states have internal predecessors, (139445), 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 19:17:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113598 states to 113598 states and 139445 transitions. [2021-11-07 19:17:45,109 INFO L78 Accepts]: Start accepts. Automaton has 113598 states and 139445 transitions. Word has length 217 [2021-11-07 19:17:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:45,109 INFO L470 AbstractCegarLoop]: Abstraction has 113598 states and 139445 transitions. [2021-11-07 19:17:45,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 19:17:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 113598 states and 139445 transitions. [2021-11-07 19:17:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 19:17:45,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:45,115 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:45,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:17:45,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 19:17:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 255334756, now seen corresponding path program 1 times [2021-11-07 19:17:45,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:45,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637250047] [2021-11-07 19:17:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:45,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:17:45,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:45,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637250047] [2021-11-07 19:17:45,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637250047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:45,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:45,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:45,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95063148] [2021-11-07 19:17:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:45,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:45,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:45,568 INFO L87 Difference]: Start difference. First operand 113598 states and 139445 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 19:17:47,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:50,525 INFO L93 Difference]: Finished difference Result 226738 states and 278382 transitions. [2021-11-07 19:17:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-07 19:17:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:50,965 INFO L225 Difference]: With dead ends: 226738 [2021-11-07 19:17:50,966 INFO L226 Difference]: Without dead ends: 151196 [2021-11-07 19:17:51,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:51,077 INFO L933 BasicCegarLoop]: 53227 mSDtfsCounter, 26265 mSDsluCounter, 26941 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2311.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26265 SdHoareTripleChecker+Valid, 80168 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2381.35ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:51,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26265 Valid, 80168 Invalid, 37 Unknown, 0 Unchecked, 53.95ms Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2381.35ms Time] [2021-11-07 19:17:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151196 states.