./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-wip.dd.seqcomp-5f08f0f [2021-11-05 22:36:47,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 22:36:47,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 22:36:47,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 22:36:47,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 22:36:47,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 22:36:47,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 22:36:47,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 22:36:47,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 22:36:47,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 22:36:47,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 22:36:47,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 22:36:47,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 22:36:47,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 22:36:47,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 22:36:47,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 22:36:47,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 22:36:47,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 22:36:47,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 22:36:47,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 22:36:47,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 22:36:47,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 22:36:47,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 22:36:47,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 22:36:47,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 22:36:47,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 22:36:47,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 22:36:47,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 22:36:47,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 22:36:47,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 22:36:47,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 22:36:47,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 22:36:47,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 22:36:47,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 22:36:47,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 22:36:47,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 22:36:47,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 22:36:47,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 22:36:47,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 22:36:47,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 22:36:47,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 22:36:47,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 22:36:47,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 22:36:47,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 22:36:47,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 22:36:47,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 22:36:47,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 22:36:47,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 22:36:47,668 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 22:36:47,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 22:36:47,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 22:36:47,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 22:36:47,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 22:36:47,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 22:36:47,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 22:36:47,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 22:36:47,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 22:36:47,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 22:36:47,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 22:36:47,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 22:36:47,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 22:36:47,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 22:36:47,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 22:36:47,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 22:36:47,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 22:36:47,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 22:36:47,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2021-11-05 22:36:47,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 22:36:47,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 22:36:47,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 22:36:47,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 22:36:47,945 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 22:36:47,946 INFO L432 ainManager$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 [2021-11-05 22:36:47,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b6e7904/8818ee15085945d8a52cee840c79d485/FLAG4f6eb56c4 [2021-11-05 22:36:48,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 22:36:48,685 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 [2021-11-05 22:36:48,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b6e7904/8818ee15085945d8a52cee840c79d485/FLAG4f6eb56c4 [2021-11-05 22:36:48,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b6e7904/8818ee15085945d8a52cee840c79d485 [2021-11-05 22:36:48,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 22:36:48,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 22:36:48,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 22:36:48,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 22:36:48,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 22:36:48,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:36:48" (1/1) ... [2021-11-05 22:36:48,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9d697c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:48, skipping insertion in model container [2021-11-05 22:36:48,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:36:48" (1/1) ... [2021-11-05 22:36:48,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 22:36:48,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 22:36:51,675 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] [2021-11-05 22:36:51,679 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] [2021-11-05 22:36:51,683 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] [2021-11-05 22:36:51,684 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] [2021-11-05 22:36:51,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 22:36:51,767 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 22:36:52,103 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] [2021-11-05 22:36:52,104 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] [2021-11-05 22:36:52,105 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] [2021-11-05 22:36:52,105 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] [2021-11-05 22:36:52,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 22:36:52,261 INFO L208 MainTranslator]: Completed translation [2021-11-05 22:36:52,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52 WrapperNode [2021-11-05 22:36:52,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 22:36:52,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 22:36:52,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 22:36:52,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 22:36:52,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:52,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:54,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 22:36:54,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 22:36:54,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 22:36:54,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 22:36:54,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:54,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:55,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:55,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:56,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:56,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:57,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:57,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 22:36:57,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 22:36:57,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 22:36:57,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 22:36:57,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (1/1) ... [2021-11-05 22:36:57,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 22:36:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 22:36:57,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 22:36:57,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 22:36:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 22:36:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 22:36:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 22:36:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 22:36:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 22:36:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 22:36:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 22:36:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-05 22:36:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-05 22:36:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 22:37:28,820 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 22:37:28,820 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 22:37:28,820 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 22:37:28,820 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#9: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#11: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,821 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#10: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,822 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#12: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,822 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 22:37:28,824 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 22:37:28,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 22:37:28,864 INFO L299 CfgBuilder]: Removed 30415 assume(true) statements. [2021-11-05 22:37:28,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:37:28 BoogieIcfgContainer [2021-11-05 22:37:28,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 22:37:28,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 22:37:28,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 22:37:28,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 22:37:28,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 10:36:48" (1/3) ... [2021-11-05 22:37:28,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23999b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:37:28, skipping insertion in model container [2021-11-05 22:37:28,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:36:52" (2/3) ... [2021-11-05 22:37:28,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23999b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:37:28, skipping insertion in model container [2021-11-05 22:37:28,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:37:28" (3/3) ... [2021-11-05 22:37:28,882 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-05 22:37:28,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 22:37:28,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-05 22:37:28,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 22:37:28,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 22:37:28,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-05 22:37:29,139 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) [2021-11-05 22:37:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 22:37:29,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:29,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:37:29,159 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)] === [2021-11-05 22:37:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1200985652, now seen corresponding path program 1 times [2021-11-05 22:37:29,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:29,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239954903] [2021-11-05 22:37:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:29,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:37:29,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:29,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239954903] [2021-11-05 22:37:29,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239954903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:29,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:29,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:29,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306571686] [2021-11-05 22:37:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:29,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 22:37:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 22:37:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:29,825 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) [2021-11-05 22:37:30,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:37:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:37:32,139 INFO L93 Difference]: Finished difference Result 50860 states and 61838 transitions. [2021-11-05 22:37:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 22:37:32,141 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 [2021-11-05 22:37:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:37:32,477 INFO L225 Difference]: With dead ends: 50860 [2021-11-05 22:37:32,477 INFO L226 Difference]: Without dead ends: 33530 [2021-11-05 22:37:32,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:32,571 INFO L933 BasicCegarLoop]: 20903 mSDtfsCounter, 20221 mSDsluCounter, 20842 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1100.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20221 SdHoareTripleChecker+Valid, 41745 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1201.89ms IncrementalHoareTripleChecker+Time [2021-11-05 22:37:32,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20221 Valid, 41745 Invalid, 34 Unknown, 0 Unchecked, 82.63ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1201.89ms Time] [2021-11-05 22:37:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33530 states. [2021-11-05 22:37:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33530 to 33504. [2021-11-05 22:37:33,378 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) [2021-11-05 22:37:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33504 states to 33504 states and 40220 transitions. [2021-11-05 22:37:33,512 INFO L78 Accepts]: Start accepts. Automaton has 33504 states and 40220 transitions. Word has length 126 [2021-11-05 22:37:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:37:33,513 INFO L470 AbstractCegarLoop]: Abstraction has 33504 states and 40220 transitions. [2021-11-05 22:37:33,514 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) [2021-11-05 22:37:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 33504 states and 40220 transitions. [2021-11-05 22:37:33,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 22:37:33,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:33,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:37:33,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 22:37:33,518 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)] === [2021-11-05 22:37:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -289314059, now seen corresponding path program 1 times [2021-11-05 22:37:33,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:33,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672426904] [2021-11-05 22:37:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:33,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:37:33,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:33,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672426904] [2021-11-05 22:37:33,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672426904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:33,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:33,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:33,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470436377] [2021-11-05 22:37:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:33,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 22:37:33,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 22:37:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:33,792 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) [2021-11-05 22:37:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:37:36,338 INFO L93 Difference]: Finished difference Result 99056 states and 118893 transitions. [2021-11-05 22:37:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 22:37:36,339 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 [2021-11-05 22:37:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:37:36,563 INFO L225 Difference]: With dead ends: 99056 [2021-11-05 22:37:36,563 INFO L226 Difference]: Without dead ends: 65844 [2021-11-05 22:37:36,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:36,703 INFO L933 BasicCegarLoop]: 20386 mSDtfsCounter, 19590 mSDsluCounter, 20223 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1061.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19590 SdHoareTripleChecker+Valid, 40609 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.66ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1184.97ms IncrementalHoareTripleChecker+Time [2021-11-05 22:37:36,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19590 Valid, 40609 Invalid, 61 Unknown, 0 Unchecked, 46.66ms Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 1184.97ms Time] [2021-11-05 22:37:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65844 states. [2021-11-05 22:37:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65844 to 65576. [2021-11-05 22:37:37,956 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) [2021-11-05 22:37:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65576 states to 65576 states and 78738 transitions. [2021-11-05 22:37:38,415 INFO L78 Accepts]: Start accepts. Automaton has 65576 states and 78738 transitions. Word has length 127 [2021-11-05 22:37:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:37:38,417 INFO L470 AbstractCegarLoop]: Abstraction has 65576 states and 78738 transitions. [2021-11-05 22:37:38,417 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) [2021-11-05 22:37:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 65576 states and 78738 transitions. [2021-11-05 22:37:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 22:37:38,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:38,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:37:38,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 22:37:38,432 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)] === [2021-11-05 22:37:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1815155163, now seen corresponding path program 1 times [2021-11-05 22:37:38,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:38,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219231043] [2021-11-05 22:37:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:38,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:37:38,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:38,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219231043] [2021-11-05 22:37:38,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219231043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:38,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:38,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:38,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618522256] [2021-11-05 22:37:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:38,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 22:37:38,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 22:37:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:38,671 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) [2021-11-05 22:37:40,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:37:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:37:42,223 INFO L93 Difference]: Finished difference Result 130882 states and 157167 transitions. [2021-11-05 22:37:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 22:37:42,223 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 [2021-11-05 22:37:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:37:42,523 INFO L225 Difference]: With dead ends: 130882 [2021-11-05 22:37:42,524 INFO L226 Difference]: Without dead ends: 98112 [2021-11-05 22:37:42,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:42,662 INFO L933 BasicCegarLoop]: 40225 mSDtfsCounter, 19850 mSDsluCounter, 20355 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2075.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19850 SdHoareTripleChecker+Valid, 60580 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2193.44ms IncrementalHoareTripleChecker+Time [2021-11-05 22:37:42,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19850 Valid, 60580 Invalid, 30 Unknown, 0 Unchecked, 38.67ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2193.44ms Time] [2021-11-05 22:37:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98112 states. [2021-11-05 22:37:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98112 to 98086. [2021-11-05 22:37:44,482 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) [2021-11-05 22:37:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98086 states to 98086 states and 117809 transitions. [2021-11-05 22:37:44,707 INFO L78 Accepts]: Start accepts. Automaton has 98086 states and 117809 transitions. Word has length 155 [2021-11-05 22:37:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:37:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 98086 states and 117809 transitions. [2021-11-05 22:37:44,708 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) [2021-11-05 22:37:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 98086 states and 117809 transitions. [2021-11-05 22:37:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 22:37:44,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:44,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 22:37:44,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 22:37:44,717 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)] === [2021-11-05 22:37:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:44,717 INFO L85 PathProgramCache]: Analyzing trace with hash 535291485, now seen corresponding path program 1 times [2021-11-05 22:37:44,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:44,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917994651] [2021-11-05 22:37:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:44,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 22:37:45,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:45,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917994651] [2021-11-05 22:37:45,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917994651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:45,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:45,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:45,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363035785] [2021-11-05 22:37:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 22:37:45,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 22:37:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:45,137 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) [2021-11-05 22:37:47,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 22:37:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:37:49,435 INFO L93 Difference]: Finished difference Result 195904 states and 235313 transitions. [2021-11-05 22:37:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 22:37:49,435 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 [2021-11-05 22:37:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:37:49,779 INFO L225 Difference]: With dead ends: 195904 [2021-11-05 22:37:49,779 INFO L226 Difference]: Without dead ends: 130624 [2021-11-05 22:37:49,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 22:37:49,997 INFO L933 BasicCegarLoop]: 40225 mSDtfsCounter, 19896 mSDsluCounter, 20310 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2087.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19896 SdHoareTripleChecker+Valid, 60535 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.54ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2216.52ms IncrementalHoareTripleChecker+Time [2021-11-05 22:37:49,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19896 Valid, 60535 Invalid, 32 Unknown, 0 Unchecked, 40.54ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2216.52ms Time] [2021-11-05 22:37:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130624 states. [2021-11-05 22:37:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130624 to 130591. [2021-11-05 22:37:52,529 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) [2021-11-05 22:37:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130591 states to 130591 states and 156875 transitions. [2021-11-05 22:37:52,825 INFO L78 Accepts]: Start accepts. Automaton has 130591 states and 156875 transitions. Word has length 155 [2021-11-05 22:37:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:37:52,826 INFO L470 AbstractCegarLoop]: Abstraction has 130591 states and 156875 transitions. [2021-11-05 22:37:52,826 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) [2021-11-05 22:37:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 130591 states and 156875 transitions. [2021-11-05 22:37:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-05 22:37:52,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:52,835 INFO L514 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] [2021-11-05 22:37:52,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 22:37:52,836 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)] === [2021-11-05 22:37:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1115956186, now seen corresponding path program 1 times [2021-11-05 22:37:52,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:52,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642412374] [2021-11-05 22:37:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:52,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 22:37:53,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:53,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642412374] [2021-11-05 22:37:53,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642412374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:53,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:53,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:53,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105826649] [2021-11-05 22:37:53,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:53,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:37:53,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:53,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:37:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:37:53,505 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) [2021-11-05 22:37:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 22:37:55,520 INFO L93 Difference]: Finished difference Result 130591 states and 156875 transitions. [2021-11-05 22:37:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 22:37:55,520 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 [2021-11-05 22:37:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 22:37:55,858 INFO L225 Difference]: With dead ends: 130591 [2021-11-05 22:37:55,859 INFO L226 Difference]: Without dead ends: 130585 [2021-11-05 22:37:55,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 22:37:55,938 INFO L933 BasicCegarLoop]: 20369 mSDtfsCounter, 20234 mSDsluCounter, 20273 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20234 SdHoareTripleChecker+Valid, 40642 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.42ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.94ms IncrementalHoareTripleChecker+Time [2021-11-05 22:37:55,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20234 Valid, 40642 Invalid, 106 Unknown, 0 Unchecked, 48.42ms Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 120.94ms Time] [2021-11-05 22:37:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130585 states. [2021-11-05 22:37:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130585 to 130585. [2021-11-05 22:37:58,722 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) [2021-11-05 22:37:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130585 states to 130585 states and 156869 transitions. [2021-11-05 22:37:59,012 INFO L78 Accepts]: Start accepts. Automaton has 130585 states and 156869 transitions. Word has length 156 [2021-11-05 22:37:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 22:37:59,013 INFO L470 AbstractCegarLoop]: Abstraction has 130585 states and 156869 transitions. [2021-11-05 22:37:59,013 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) [2021-11-05 22:37:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 130585 states and 156869 transitions. [2021-11-05 22:37:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-05 22:37:59,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 22:37:59,022 INFO L514 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] [2021-11-05 22:37:59,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 22:37:59,023 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)] === [2021-11-05 22:37:59,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 22:37:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1307339299, now seen corresponding path program 1 times [2021-11-05 22:37:59,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 22:37:59,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426508] [2021-11-05 22:37:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 22:37:59,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 22:37:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 22:37:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 22:37:59,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 22:37:59,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426508] [2021-11-05 22:37:59,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 22:37:59,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 22:37:59,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 22:37:59,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537981919] [2021-11-05 22:37:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 22:37:59,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 22:37:59,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 22:37:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 22:37:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 22:37:59,646 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)