./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-wireless-rtl818x-rtl8180-rtl8180.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.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 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:49:22,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:49:22,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:49:22,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:49:22,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:49:22,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:49:22,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:49:22,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:49:22,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:49:22,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:49:22,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:49:22,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:49:22,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:49:22,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:49:22,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:49:22,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:49:22,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:49:22,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:49:22,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:49:22,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:49:22,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:49:22,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:49:22,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:49:22,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:49:22,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:49:22,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:49:22,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:49:22,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:49:22,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:49:22,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:49:22,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:49:22,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:49:22,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:49:22,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:49:22,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:49:22,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:49:22,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:49:22,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:49:22,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:49:22,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:49:22,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:49:22,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:49:22,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:49:22,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:49:22,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:49:22,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:49:22,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:49:22,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:49:22,512 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:49:22,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:49:22,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:49:22,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:49:22,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:49:22,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:49:22,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:49:22,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:49:22,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:49:22,515 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:49:22,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:49:22,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:49:22,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:49:22,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2021-11-06 20:49:22,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:49:22,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:49:22,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:49:22,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:49:22,737 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:49:22,737 INFO L432 ainManager$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-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-06 20:49:22,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4ba2b89/6319b5910ccb4803b89318ae56b8f56f/FLAGf9ddabd05 [2021-11-06 20:49:23,461 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:49:23,461 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-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-06 20:49:23,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4ba2b89/6319b5910ccb4803b89318ae56b8f56f/FLAGf9ddabd05 [2021-11-06 20:49:23,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc4ba2b89/6319b5910ccb4803b89318ae56b8f56f [2021-11-06 20:49:23,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:49:23,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:49:23,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:49:23,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:49:23,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:49:23,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:49:23" (1/1) ... [2021-11-06 20:49:23,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f282309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:23, skipping insertion in model container [2021-11-06 20:49:23,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:49:23" (1/1) ... [2021-11-06 20:49:23,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:49:23,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:49:26,450 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-06 20:49:26,452 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-06 20:49:26,452 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-06 20:49:26,452 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-06 20:49:26,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:49:26,533 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:49:26,840 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-06 20:49:26,841 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-06 20:49:26,841 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-06 20:49:26,842 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-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-06 20:49:26,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:49:26,981 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:49:26,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26 WrapperNode [2021-11-06 20:49:26,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:49:26,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:49:26,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:49:26,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:49:26,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:27,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:29,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:49:29,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:49:29,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:49:29,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:49:29,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:29,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:30,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:30,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:31,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:31,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:31,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:32,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:49:32,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:49:32,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:49:32,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:49:32,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (1/1) ... [2021-11-06 20:49:32,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:49:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:49:32,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:49:32,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:49:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:49:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:49:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 20:49:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:49:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:49:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-06 20:49:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 20:49:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:50:04,718 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,719 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,720 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,720 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#9: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,720 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#11: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,720 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#10: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,720 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#12: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,721 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:50:04,723 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:50:04,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:50:04,777 INFO L299 CfgBuilder]: Removed 30415 assume(true) statements. [2021-11-06 20:50:04,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:50:04 BoogieIcfgContainer [2021-11-06 20:50:04,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:50:04,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:50:04,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:50:04,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:50:04,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:49:23" (1/3) ... [2021-11-06 20:50:04,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb1946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:50:04, skipping insertion in model container [2021-11-06 20:50:04,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:26" (2/3) ... [2021-11-06 20:50:04,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb1946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:50:04, skipping insertion in model container [2021-11-06 20:50:04,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:50:04" (3/3) ... [2021-11-06 20:50:04,795 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-06 20:50:04,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:50:04,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-06 20:50:04,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:50:04,884 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:50:04,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-06 20:50:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 17266 states, 17202 states have (on average 1.219625624927334) internal successors, (20980), 17251 states have internal predecessors, (20980), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-06 20:50:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 20:50:05,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:05,071 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:50:05,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1200985652, now seen corresponding path program 1 times [2021-11-06 20:50:05,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:05,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665292529] [2021-11-06 20:50:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:05,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:50:05,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:05,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665292529] [2021-11-06 20:50:05,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665292529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:05,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:05,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:05,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572130332] [2021-11-06 20:50:05,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:50:05,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:50:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:06,010 INFO L87 Difference]: Start difference. First operand has 17266 states, 17202 states have (on average 1.219625624927334) internal successors, (20980), 17251 states have internal predecessors, (20980), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:50:09,036 INFO L93 Difference]: Finished difference Result 50860 states and 61838 transitions. [2021-11-06 20:50:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:50:09,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2021-11-06 20:50:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:50:09,198 INFO L225 Difference]: With dead ends: 50860 [2021-11-06 20:50:09,198 INFO L226 Difference]: Without dead ends: 33530 [2021-11-06 20:50:09,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33530 states. [2021-11-06 20:50:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33530 to 33504. [2021-11-06 20:50:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33504 states, 33425 states have (on average 1.2017352281226628) internal successors, (40168), 33475 states have internal predecessors, (40168), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-06 20:50:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33504 states to 33504 states and 40220 transitions. [2021-11-06 20:50:10,301 INFO L78 Accepts]: Start accepts. Automaton has 33504 states and 40220 transitions. Word has length 126 [2021-11-06 20:50:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:50:10,303 INFO L470 AbstractCegarLoop]: Abstraction has 33504 states and 40220 transitions. [2021-11-06 20:50:10,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 33504 states and 40220 transitions. [2021-11-06 20:50:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 20:50:10,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:10,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:50:10,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:50:10,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -289314059, now seen corresponding path program 1 times [2021-11-06 20:50:10,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:10,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682914643] [2021-11-06 20:50:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:10,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:50:10,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:10,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682914643] [2021-11-06 20:50:10,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682914643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:10,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:10,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:10,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021699064] [2021-11-06 20:50:10,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:50:10,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:50:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:10,559 INFO L87 Difference]: Start difference. First operand 33504 states and 40220 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:50:13,978 INFO L93 Difference]: Finished difference Result 99056 states and 118893 transitions. [2021-11-06 20:50:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:50:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2021-11-06 20:50:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:50:14,203 INFO L225 Difference]: With dead ends: 99056 [2021-11-06 20:50:14,207 INFO L226 Difference]: Without dead ends: 65844 [2021-11-06 20:50:14,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65844 states. [2021-11-06 20:50:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65844 to 65576. [2021-11-06 20:50:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65576 states, 65469 states have (on average 1.2007515007102598) internal successors, (78612), 65523 states have internal predecessors, (78612), 52 states have call successors, (52), 8 states have call predecessors, (52), 6 states have return successors, (74), 46 states have call predecessors, (74), 52 states have call successors, (74) [2021-11-06 20:50:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65576 states to 65576 states and 78738 transitions. [2021-11-06 20:50:15,913 INFO L78 Accepts]: Start accepts. Automaton has 65576 states and 78738 transitions. Word has length 127 [2021-11-06 20:50:15,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:50:15,914 INFO L470 AbstractCegarLoop]: Abstraction has 65576 states and 78738 transitions. [2021-11-06 20:50:15,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65576 states and 78738 transitions. [2021-11-06 20:50:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 20:50:15,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:15,929 INFO L513 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] [2021-11-06 20:50:15,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:50:15,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1815155163, now seen corresponding path program 1 times [2021-11-06 20:50:15,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:15,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305350114] [2021-11-06 20:50:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:15,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:50:16,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:16,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305350114] [2021-11-06 20:50:16,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305350114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:16,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:16,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:16,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109328648] [2021-11-06 20:50:16,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:50:16,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:50:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:16,382 INFO L87 Difference]: Start difference. First operand 65576 states and 78738 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:50:19,132 INFO L93 Difference]: Finished difference Result 130882 states and 157167 transitions. [2021-11-06 20:50:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:50:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-11-06 20:50:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:50:19,504 INFO L225 Difference]: With dead ends: 130882 [2021-11-06 20:50:19,504 INFO L226 Difference]: Without dead ends: 98112 [2021-11-06 20:50:19,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98112 states. [2021-11-06 20:50:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98112 to 98086. [2021-11-06 20:50:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98086 states, 97950 states have (on average 1.200816743236345) internal successors, (117620), 98007 states have internal predecessors, (117620), 78 states have call successors, (78), 12 states have call predecessors, (78), 9 states have return successors, (111), 69 states have call predecessors, (111), 78 states have call successors, (111) [2021-11-06 20:50:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98086 states to 98086 states and 117809 transitions. [2021-11-06 20:50:22,145 INFO L78 Accepts]: Start accepts. Automaton has 98086 states and 117809 transitions. Word has length 155 [2021-11-06 20:50:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:50:22,146 INFO L470 AbstractCegarLoop]: Abstraction has 98086 states and 117809 transitions. [2021-11-06 20:50:22,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 98086 states and 117809 transitions. [2021-11-06 20:50:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 20:50:22,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:22,156 INFO L513 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] [2021-11-06 20:50:22,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:50:22,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 535291485, now seen corresponding path program 1 times [2021-11-06 20:50:22,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:22,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098446925] [2021-11-06 20:50:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:22,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:50:22,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:22,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098446925] [2021-11-06 20:50:22,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098446925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:22,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:22,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:22,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022637646] [2021-11-06 20:50:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:50:22,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:50:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:22,349 INFO L87 Difference]: Start difference. First operand 98086 states and 117809 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:50:26,573 INFO L93 Difference]: Finished difference Result 195904 states and 235313 transitions. [2021-11-06 20:50:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:50:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-11-06 20:50:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:50:27,047 INFO L225 Difference]: With dead ends: 195904 [2021-11-06 20:50:27,048 INFO L226 Difference]: Without dead ends: 130624 [2021-11-06 20:50:27,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:50:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130624 states. [2021-11-06 20:50:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130624 to 130591. [2021-11-06 20:50:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130591 states, 130426 states have (on average 1.200857191050864) internal successors, (156623), 130486 states have internal predecessors, (156623), 104 states have call successors, (104), 16 states have call predecessors, (104), 12 states have return successors, (148), 92 states have call predecessors, (148), 104 states have call successors, (148) [2021-11-06 20:50:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130591 states to 130591 states and 156875 transitions. [2021-11-06 20:50:30,497 INFO L78 Accepts]: Start accepts. Automaton has 130591 states and 156875 transitions. Word has length 155 [2021-11-06 20:50:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:50:30,497 INFO L470 AbstractCegarLoop]: Abstraction has 130591 states and 156875 transitions. [2021-11-06 20:50:30,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 130591 states and 156875 transitions. [2021-11-06 20:50:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 20:50:30,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:30,507 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:50:30,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:50:30,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1115956186, now seen corresponding path program 1 times [2021-11-06 20:50:30,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:30,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127653881] [2021-11-06 20:50:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:30,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 20:50:30,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:30,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127653881] [2021-11-06 20:50:30,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127653881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:30,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:30,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:30,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031856837] [2021-11-06 20:50:30,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:50:30,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:50:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:50:30,816 INFO L87 Difference]: Start difference. First operand 130591 states and 156875 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:50:33,000 INFO L93 Difference]: Finished difference Result 130591 states and 156875 transitions. [2021-11-06 20:50:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:50:33,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 156 [2021-11-06 20:50:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:50:33,375 INFO L225 Difference]: With dead ends: 130591 [2021-11-06 20:50:33,375 INFO L226 Difference]: Without dead ends: 130585 [2021-11-06 20:50:33,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:50:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130585 states. [2021-11-06 20:50:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130585 to 130585. [2021-11-06 20:50:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130585 states, 130423 states have (on average 1.2008388091057558) internal successors, (156617), 130480 states have internal predecessors, (156617), 104 states have call successors, (104), 16 states have call predecessors, (104), 12 states have return successors, (148), 92 states have call predecessors, (148), 104 states have call successors, (148) [2021-11-06 20:50:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130585 states to 130585 states and 156869 transitions. [2021-11-06 20:50:36,554 INFO L78 Accepts]: Start accepts. Automaton has 130585 states and 156869 transitions. Word has length 156 [2021-11-06 20:50:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:50:36,554 INFO L470 AbstractCegarLoop]: Abstraction has 130585 states and 156869 transitions. [2021-11-06 20:50:36,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:50:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 130585 states and 156869 transitions. [2021-11-06 20:50:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 20:50:36,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:50:36,565 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:50:36,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:50:36,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-06 20:50:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:50:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1307339299, now seen corresponding path program 1 times [2021-11-06 20:50:36,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:50:36,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257598321] [2021-11-06 20:50:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:50:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:50:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:50:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 20:50:36,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:50:36,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257598321] [2021-11-06 20:50:36,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257598321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:50:36,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:50:36,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:50:36,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957284489] [2021-11-06 20:50:36,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:50:36,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:50:36,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:50:36,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:50:36,850 INFO L87 Difference]: Start difference. First operand 130585 states and 156869 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 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)