./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-dec-tulip-tulip.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-dec-tulip-tulip.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 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:14:27,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:14:27,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:14:27,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:14:27,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:14:27,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:14:27,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:14:27,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:14:27,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:14:27,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:14:27,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:14:27,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:14:27,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:14:27,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:14:27,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:14:27,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:14:27,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:14:27,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:14:27,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:14:27,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:14:27,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:14:27,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:14:27,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:14:27,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:14:27,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:14:27,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:14:27,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:14:27,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:14:27,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:14:27,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:14:27,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:14:27,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:14:27,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:14:27,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:14:27,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:14:27,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:14:27,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:14:27,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:14:27,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:14:27,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:14:27,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:14:27,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:14:27,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:14:27,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:14:27,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:14:27,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:14:27,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:14:27,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:14:27,302 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:14:27,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:14:27,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:14:27,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:14:27,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:14:27,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:14:27,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:14:27,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:14:27,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:14:27,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:14:27,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:14:27,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:14:27,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:14:27,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:14:27,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:14:27,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:14:27,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:14:27,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:14:27,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2021-11-07 19:14:27,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:14:27,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:14:27,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:14:27,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:14:27,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:14:27,475 INFO L432 ainManager$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-dec-tulip-tulip.cil.i [2021-11-07 19:14:27,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0b0ed8c/95bfedae853d4499a3b30af23bdc6eb6/FLAG7036d741c [2021-11-07 19:14:28,223 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:14:28,224 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-dec-tulip-tulip.cil.i [2021-11-07 19:14:28,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0b0ed8c/95bfedae853d4499a3b30af23bdc6eb6/FLAG7036d741c [2021-11-07 19:14:28,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0b0ed8c/95bfedae853d4499a3b30af23bdc6eb6 [2021-11-07 19:14:28,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:14:28,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:14:28,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:14:28,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:14:28,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:14:28,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:28" (1/1) ... [2021-11-07 19:14:28,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3f1c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:28, skipping insertion in model container [2021-11-07 19:14:28,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:28" (1/1) ... [2021-11-07 19:14:28,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:14:28,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:14:31,854 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-dec-tulip-tulip.cil.i[491234,491247] [2021-11-07 19:14:31,856 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-dec-tulip-tulip.cil.i[491403,491416] [2021-11-07 19:14:31,857 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-dec-tulip-tulip.cil.i[491570,491583] [2021-11-07 19:14:31,857 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-dec-tulip-tulip.cil.i[491738,491751] [2021-11-07 19:14:31,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:14:31,928 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:14:32,218 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-dec-tulip-tulip.cil.i[491234,491247] [2021-11-07 19:14:32,219 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-dec-tulip-tulip.cil.i[491403,491416] [2021-11-07 19:14:32,219 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-dec-tulip-tulip.cil.i[491570,491583] [2021-11-07 19:14:32,220 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-dec-tulip-tulip.cil.i[491738,491751] [2021-11-07 19:14:32,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:14:32,384 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:14:32,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32 WrapperNode [2021-11-07 19:14:32,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:14:32,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:14:32,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:14:32,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:14:32,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:32,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:34,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:14:34,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:14:34,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:14:34,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:14:34,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:34,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:35,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:35,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:36,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:36,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:36,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:37,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:14:37,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:14:37,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:14:37,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:14:37,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (1/1) ... [2021-11-07 19:14:37,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:14:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:14:37,125 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 19:14:37,196 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 19:14:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:14:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:14:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:14:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:14:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:14:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:14:37,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:14:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:14:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:14:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:17:46,096 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:17:46,096 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:17:46,096 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,096 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,096 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:17:46,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:17:46,098 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,099 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:17:46,101 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:17:46,104 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#10: ldv_switch_2_#res := 0; [2021-11-07 19:17:46,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:17:46,147 INFO L299 CfgBuilder]: Removed 18869 assume(true) statements. [2021-11-07 19:17:46,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:17:46 BoogieIcfgContainer [2021-11-07 19:17:46,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:17:46,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:17:46,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:17:46,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:17:46,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:14:28" (1/3) ... [2021-11-07 19:17:46,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dee25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:17:46, skipping insertion in model container [2021-11-07 19:17:46,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:32" (2/3) ... [2021-11-07 19:17:46,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104dee25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:17:46, skipping insertion in model container [2021-11-07 19:17:46,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:17:46" (3/3) ... [2021-11-07 19:17:46,167 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-07 19:17:46,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:17:46,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 418 error locations. [2021-11-07 19:17:46,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:17:46,240 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 19:17:46,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 418 error locations. [2021-11-07 19:17:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 17950 states, 17532 states have (on average 1.3671001597079626) internal successors, (23968), 17949 states have internal predecessors, (23968), 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 19:17:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 19:17:46,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:46,414 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] [2021-11-07 19:17:46,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-07 19:17:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash 461028898, now seen corresponding path program 1 times [2021-11-07 19:17:46,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:46,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204438771] [2021-11-07 19:17:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:46,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:47,537 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 19:17:47,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:47,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204438771] [2021-11-07 19:17:47,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204438771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:47,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:47,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:47,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409174717] [2021-11-07 19:17:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:47,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:47,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:47,597 INFO L87 Difference]: Start difference. First operand has 17950 states, 17532 states have (on average 1.3671001597079626) internal successors, (23968), 17949 states have internal predecessors, (23968), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:17:49,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:50,981 INFO L93 Difference]: Finished difference Result 53244 states and 71129 transitions. [2021-11-07 19:17:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:50,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-07 19:17:50,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:51,144 INFO L225 Difference]: With dead ends: 53244 [2021-11-07 19:17:51,144 INFO L226 Difference]: Without dead ends: 34254 [2021-11-07 19:17:51,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:51,191 INFO L933 BasicCegarLoop]: 23406 mSDtfsCounter, 23016 mSDsluCounter, 23358 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2304.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23016 SdHoareTripleChecker+Valid, 46764 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.38ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2432.49ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:51,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23016 Valid, 46764 Invalid, 34 Unknown, 0 Unchecked, 81.38ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2432.49ms Time] [2021-11-07 19:17:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34254 states. [2021-11-07 19:17:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34254 to 33496. [2021-11-07 19:17:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33496 states, 33078 states have (on average 1.3203035250015116) internal successors, (43673), 33495 states have internal predecessors, (43673), 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 19:17:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33496 states to 33496 states and 43673 transitions. [2021-11-07 19:17:52,088 INFO L78 Accepts]: Start accepts. Automaton has 33496 states and 43673 transitions. Word has length 57 [2021-11-07 19:17:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:52,208 INFO L470 AbstractCegarLoop]: Abstraction has 33496 states and 43673 transitions. [2021-11-07 19:17:52,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:17:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 33496 states and 43673 transitions. [2021-11-07 19:17:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 19:17:52,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:52,212 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] [2021-11-07 19:17:52,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:17:52,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr123ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-07 19:17:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1668319127, now seen corresponding path program 1 times [2021-11-07 19:17:52,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:52,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399200112] [2021-11-07 19:17:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:52,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:52,622 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 19:17:52,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:52,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399200112] [2021-11-07 19:17:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399200112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:52,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:52,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222311442] [2021-11-07 19:17:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:52,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:52,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:52,625 INFO L87 Difference]: Start difference. First operand 33496 states and 43673 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:17:54,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:17:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:17:56,226 INFO L93 Difference]: Finished difference Result 63727 states and 82745 transitions. [2021-11-07 19:17:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:17:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-07 19:17:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:17:56,296 INFO L225 Difference]: With dead ends: 63727 [2021-11-07 19:17:56,296 INFO L226 Difference]: Without dead ends: 30339 [2021-11-07 19:17:56,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:56,471 INFO L933 BasicCegarLoop]: 22175 mSDtfsCounter, 8714 mSDsluCounter, 22033 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2607.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8714 SdHoareTripleChecker+Valid, 44208 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.63ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2739.91ms IncrementalHoareTripleChecker+Time [2021-11-07 19:17:56,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8714 Valid, 44208 Invalid, 100 Unknown, 0 Unchecked, 37.63ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2739.91ms Time] [2021-11-07 19:17:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30339 states. [2021-11-07 19:17:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30339 to 29937. [2021-11-07 19:17:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29937 states, 29519 states have (on average 1.3186761069141908) internal successors, (38926), 29936 states have internal predecessors, (38926), 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 19:17:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29937 states to 29937 states and 38926 transitions. [2021-11-07 19:17:57,211 INFO L78 Accepts]: Start accepts. Automaton has 29937 states and 38926 transitions. Word has length 61 [2021-11-07 19:17:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:17:57,211 INFO L470 AbstractCegarLoop]: Abstraction has 29937 states and 38926 transitions. [2021-11-07 19:17:57,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:17:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 29937 states and 38926 transitions. [2021-11-07 19:17:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 19:17:57,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:17:57,215 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] [2021-11-07 19:17:57,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:17:57,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-07 19:17:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:17:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 805988335, now seen corresponding path program 1 times [2021-11-07 19:17:57,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:17:57,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749088793] [2021-11-07 19:17:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:17:57,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:17:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:17:57,644 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 19:17:57,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:17:57,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749088793] [2021-11-07 19:17:57,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749088793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:17:57,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:17:57,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:17:57,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880169464] [2021-11-07 19:17:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:17:57,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:17:57,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:17:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:17:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:17:57,646 INFO L87 Difference]: Start difference. First operand 29937 states and 38926 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:17:59,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:18:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:18:00,995 INFO L93 Difference]: Finished difference Result 79631 states and 103313 transitions. [2021-11-07 19:18:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:18:00,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-07 19:18:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:18:01,117 INFO L225 Difference]: With dead ends: 79631 [2021-11-07 19:18:01,117 INFO L226 Difference]: Without dead ends: 49802 [2021-11-07 19:18:01,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:18:01,161 INFO L933 BasicCegarLoop]: 22180 mSDtfsCounter, 20489 mSDsluCounter, 21931 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2419.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20489 SdHoareTripleChecker+Valid, 44111 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.70ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2544.81ms IncrementalHoareTripleChecker+Time [2021-11-07 19:18:01,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20489 Valid, 44111 Invalid, 58 Unknown, 0 Unchecked, 44.70ms Time], IncrementalHoareTripleChecker [14 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 2544.81ms Time] [2021-11-07 19:18:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49802 states. [2021-11-07 19:18:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49802 to 48185. [2021-11-07 19:18:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48185 states, 47767 states have (on average 1.3203048129461763) internal successors, (63067), 48184 states have internal predecessors, (63067), 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 19:18:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48185 states to 48185 states and 63067 transitions. [2021-11-07 19:18:02,196 INFO L78 Accepts]: Start accepts. Automaton has 48185 states and 63067 transitions. Word has length 64 [2021-11-07 19:18:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:18:02,198 INFO L470 AbstractCegarLoop]: Abstraction has 48185 states and 63067 transitions. [2021-11-07 19:18:02,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 19:18:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 48185 states and 63067 transitions. [2021-11-07 19:18:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 19:18:02,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:18:02,200 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] [2021-11-07 19:18:02,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:18:02,202 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-07 19:18:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:18:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1783598557, now seen corresponding path program 1 times [2021-11-07 19:18:02,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:18:02,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103012175] [2021-11-07 19:18:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:18:02,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:18:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:18:02,699 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 19:18:02,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:18:02,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103012175] [2021-11-07 19:18:02,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103012175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:18:02,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:18:02,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:18:02,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911021319] [2021-11-07 19:18:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:18:02,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:18:02,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:18:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:18:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:18:02,701 INFO L87 Difference]: Start difference. First operand 48185 states and 63067 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:18:04,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:18:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:18:06,563 INFO L93 Difference]: Finished difference Result 130787 states and 170977 transitions. [2021-11-07 19:18:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:18:06,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-07 19:18:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:18:06,905 INFO L225 Difference]: With dead ends: 130787 [2021-11-07 19:18:06,905 INFO L226 Difference]: Without dead ends: 82710 [2021-11-07 19:18:07,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:18:07,006 INFO L933 BasicCegarLoop]: 22187 mSDtfsCounter, 19804 mSDsluCounter, 22079 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2694.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19804 SdHoareTripleChecker+Valid, 44266 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.66ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2833.67ms IncrementalHoareTripleChecker+Time [2021-11-07 19:18:07,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19804 Valid, 44266 Invalid, 71 Unknown, 0 Unchecked, 31.66ms Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2833.67ms Time] [2021-11-07 19:18:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82710 states. [2021-11-07 19:18:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82710 to 81388. [2021-11-07 19:18:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81388 states, 80970 states have (on average 1.3204643695195752) internal successors, (106918), 81387 states have internal predecessors, (106918), 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 19:18:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81388 states to 81388 states and 106918 transitions. [2021-11-07 19:18:09,025 INFO L78 Accepts]: Start accepts. Automaton has 81388 states and 106918 transitions. Word has length 65 [2021-11-07 19:18:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:18:09,025 INFO L470 AbstractCegarLoop]: Abstraction has 81388 states and 106918 transitions. [2021-11-07 19:18:09,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:18:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 81388 states and 106918 transitions. [2021-11-07 19:18:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 19:18:09,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:18:09,028 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] [2021-11-07 19:18:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:18:09,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr352ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-07 19:18:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:18:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1040541106, now seen corresponding path program 1 times [2021-11-07 19:18:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:18:09,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99453073] [2021-11-07 19:18:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:18:09,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:18:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:18:09,385 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 19:18:09,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:18:09,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99453073] [2021-11-07 19:18:09,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99453073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:18:09,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:18:09,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:18:09,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716983510] [2021-11-07 19:18:09,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:18:09,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:18:09,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:18:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:18:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:18:09,387 INFO L87 Difference]: Start difference. First operand 81388 states and 106918 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:18:11,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:18:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:18:14,332 INFO L93 Difference]: Finished difference Result 234241 states and 307766 transitions. [2021-11-07 19:18:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:18:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-07 19:18:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:18:14,773 INFO L225 Difference]: With dead ends: 234241 [2021-11-07 19:18:14,773 INFO L226 Difference]: Without dead ends: 152961 [2021-11-07 19:18:14,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:18:14,963 INFO L933 BasicCegarLoop]: 22190 mSDtfsCounter, 21135 mSDsluCounter, 22171 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2278.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21135 SdHoareTripleChecker+Valid, 44361 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.03ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2384.83ms IncrementalHoareTripleChecker+Time [2021-11-07 19:18:14,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21135 Valid, 44361 Invalid, 33 Unknown, 0 Unchecked, 36.03ms Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2384.83ms Time] [2021-11-07 19:18:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152961 states.