./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-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-5b36d44 [2021-11-07 19:21:30,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:21:30,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:21:31,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:21:31,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:21:31,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:21:31,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:21:31,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:21:31,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:21:31,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:21:31,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:21:31,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:21:31,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:21:31,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:21:31,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:21:31,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:21:31,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:21:31,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:21:31,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:21:31,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:21:31,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:21:31,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:21:31,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:21:31,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:21:31,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:21:31,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:21:31,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:21:31,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:21:31,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:21:31,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:21:31,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:21:31,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:21:31,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:21:31,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:21:31,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:21:31,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:21:31,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:21:31,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:21:31,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:21:31,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:21:31,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:21:31,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:21:31,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:21:31,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:21:31,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:21:31,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:21:31,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:21:31,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:21:31,110 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:21:31,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:21:31,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:21:31,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:21:31,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:21:31,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:21:31,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:21:31,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:21:31,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:21:31,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:21:31,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:21:31,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:21:31,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:21:31,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:21:31,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:21:31,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:21:31,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:21:31,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:21:31,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:21:31,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:21:31,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:21:31,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:21:31,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:21:31,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2021-11-07 19:21:31,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:21:31,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:21:31,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:21:31,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:21:31,351 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:21:31,352 INFO L432 ainManager$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 [2021-11-07 19:21:31,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9968a381c/32a827bea2004027a081723a3e20a093/FLAG006ce5b49 [2021-11-07 19:21:32,129 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:21:32,130 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 [2021-11-07 19:21:32,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9968a381c/32a827bea2004027a081723a3e20a093/FLAG006ce5b49 [2021-11-07 19:21:32,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9968a381c/32a827bea2004027a081723a3e20a093 [2021-11-07 19:21:32,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:21:32,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:21:32,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:21:32,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:21:32,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:21:32,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:21:32" (1/1) ... [2021-11-07 19:21:32,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dea375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:32, skipping insertion in model container [2021-11-07 19:21:32,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:21:32" (1/1) ... [2021-11-07 19:21:32,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:21:32,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:21:34,608 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] [2021-11-07 19:21:34,610 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] [2021-11-07 19:21:34,610 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] [2021-11-07 19:21:34,610 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] [2021-11-07 19:21:34,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:21:34,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:21:34,899 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] [2021-11-07 19:21:34,900 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] [2021-11-07 19:21:34,900 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] [2021-11-07 19:21:34,901 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] [2021-11-07 19:21:34,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:21:35,158 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:21:35,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35 WrapperNode [2021-11-07 19:21:35,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:21:35,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:21:35,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:21:35,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:21:35,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:35,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:37,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:21:37,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:21:37,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:21:37,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:21:37,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:37,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:38,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:38,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:39,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:40,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:40,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:40,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:21:40,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:21:40,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:21:40,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:21:40,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (1/1) ... [2021-11-07 19:21:40,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:21:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:21:40,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 19:21:40,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 19:21:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:21:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 19:21:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:21:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:21:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-07 19:21:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 19:21:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:22:14,275 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:22:14,275 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,276 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,277 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,277 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#9: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,277 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#11: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,278 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#10: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,278 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#12: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,279 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:22:14,282 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:22:14,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:22:14,337 INFO L299 CfgBuilder]: Removed 30415 assume(true) statements. [2021-11-07 19:22:14,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:14 BoogieIcfgContainer [2021-11-07 19:22:14,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:22:14,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:22:14,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:22:14,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:22:14,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:21:32" (1/3) ... [2021-11-07 19:22:14,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99b5bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:14, skipping insertion in model container [2021-11-07 19:22:14,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:35" (2/3) ... [2021-11-07 19:22:14,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99b5bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:14, skipping insertion in model container [2021-11-07 19:22:14,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:14" (3/3) ... [2021-11-07 19:22:14,357 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-07 19:22:14,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:22:14,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-07 19:22:14,442 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:22:14,449 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 19:22:14,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-07 19:22:14,632 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) [2021-11-07 19:22:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 19:22:14,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:14,646 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] [2021-11-07 19:22:14,647 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)] === [2021-11-07 19:22:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1200985652, now seen corresponding path program 1 times [2021-11-07 19:22:14,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:14,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428088862] [2021-11-07 19:22:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:14,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:22:15,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:15,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428088862] [2021-11-07 19:22:15,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428088862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:15,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:15,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:15,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697829038] [2021-11-07 19:22:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:15,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:22:15,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:22:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:15,421 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) [2021-11-07 19:22:16,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:22:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:17,991 INFO L93 Difference]: Finished difference Result 50860 states and 61838 transitions. [2021-11-07 19:22:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:22:17,994 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 [2021-11-07 19:22:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:22:18,155 INFO L225 Difference]: With dead ends: 50860 [2021-11-07 19:22:18,156 INFO L226 Difference]: Without dead ends: 33530 [2021-11-07 19:22:18,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:18,276 INFO L933 BasicCegarLoop]: 20903 mSDtfsCounter, 20221 mSDsluCounter, 20842 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1216.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20221 SdHoareTripleChecker+Valid, 41745 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.17ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1334.84ms IncrementalHoareTripleChecker+Time [2021-11-07 19:22:18,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20221 Valid, 41745 Invalid, 34 Unknown, 0 Unchecked, 107.17ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1334.84ms Time] [2021-11-07 19:22:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33530 states. [2021-11-07 19:22:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33530 to 33504. [2021-11-07 19:22:19,253 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) [2021-11-07 19:22:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33504 states to 33504 states and 40220 transitions. [2021-11-07 19:22:19,372 INFO L78 Accepts]: Start accepts. Automaton has 33504 states and 40220 transitions. Word has length 126 [2021-11-07 19:22:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:22:19,373 INFO L470 AbstractCegarLoop]: Abstraction has 33504 states and 40220 transitions. [2021-11-07 19:22:19,373 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) [2021-11-07 19:22:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 33504 states and 40220 transitions. [2021-11-07 19:22:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 19:22:19,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:19,376 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] [2021-11-07 19:22:19,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:22:19,377 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)] === [2021-11-07 19:22:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash -289314059, now seen corresponding path program 1 times [2021-11-07 19:22:19,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:19,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353322517] [2021-11-07 19:22:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:19,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:22:19,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:19,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353322517] [2021-11-07 19:22:19,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353322517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:19,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:19,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:19,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819866489] [2021-11-07 19:22:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:19,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:22:19,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:22:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:19,811 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) [2021-11-07 19:22:21,869 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 [] [2021-11-07 19:22:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:23,327 INFO L93 Difference]: Finished difference Result 99056 states and 118893 transitions. [2021-11-07 19:22:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:22:23,327 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 [2021-11-07 19:22:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:22:23,558 INFO L225 Difference]: With dead ends: 99056 [2021-11-07 19:22:23,559 INFO L226 Difference]: Without dead ends: 65844 [2021-11-07 19:22:23,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:23,711 INFO L933 BasicCegarLoop]: 20386 mSDtfsCounter, 19590 mSDsluCounter, 20223 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2110.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19590 SdHoareTripleChecker+Valid, 40609 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.07ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2217.94ms IncrementalHoareTripleChecker+Time [2021-11-07 19:22:23,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19590 Valid, 40609 Invalid, 61 Unknown, 0 Unchecked, 47.07ms Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 2217.94ms Time] [2021-11-07 19:22:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65844 states. [2021-11-07 19:22:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65844 to 65576. [2021-11-07 19:22:25,134 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) [2021-11-07 19:22:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65576 states to 65576 states and 78738 transitions. [2021-11-07 19:22:25,297 INFO L78 Accepts]: Start accepts. Automaton has 65576 states and 78738 transitions. Word has length 127 [2021-11-07 19:22:25,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:22:25,299 INFO L470 AbstractCegarLoop]: Abstraction has 65576 states and 78738 transitions. [2021-11-07 19:22:25,299 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) [2021-11-07 19:22:25,300 INFO L276 IsEmpty]: Start isEmpty. Operand 65576 states and 78738 transitions. [2021-11-07 19:22:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 19:22:25,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:25,310 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] [2021-11-07 19:22:25,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:22:25,312 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)] === [2021-11-07 19:22:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1815155163, now seen corresponding path program 1 times [2021-11-07 19:22:25,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:25,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419917099] [2021-11-07 19:22:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:25,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:22:25,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:25,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419917099] [2021-11-07 19:22:25,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419917099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:25,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:25,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:25,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118005643] [2021-11-07 19:22:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:25,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:22:25,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:22:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:25,761 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) [2021-11-07 19:22:27,828 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 [] [2021-11-07 19:22:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:29,444 INFO L93 Difference]: Finished difference Result 130882 states and 157167 transitions. [2021-11-07 19:22:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:22:29,454 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 [2021-11-07 19:22:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:22:29,908 INFO L225 Difference]: With dead ends: 130882 [2021-11-07 19:22:29,908 INFO L226 Difference]: Without dead ends: 98112 [2021-11-07 19:22:30,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:30,061 INFO L933 BasicCegarLoop]: 40225 mSDtfsCounter, 19850 mSDsluCounter, 20355 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2101.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19850 SdHoareTripleChecker+Valid, 60580 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2253.79ms IncrementalHoareTripleChecker+Time [2021-11-07 19:22:30,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19850 Valid, 60580 Invalid, 30 Unknown, 0 Unchecked, 45.13ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2253.79ms Time] [2021-11-07 19:22:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98112 states. [2021-11-07 19:22:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98112 to 98086. [2021-11-07 19:22:32,143 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) [2021-11-07 19:22:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98086 states to 98086 states and 117809 transitions. [2021-11-07 19:22:32,476 INFO L78 Accepts]: Start accepts. Automaton has 98086 states and 117809 transitions. Word has length 155 [2021-11-07 19:22:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:22:32,477 INFO L470 AbstractCegarLoop]: Abstraction has 98086 states and 117809 transitions. [2021-11-07 19:22:32,478 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) [2021-11-07 19:22:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 98086 states and 117809 transitions. [2021-11-07 19:22:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 19:22:32,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:32,486 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] [2021-11-07 19:22:32,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:22:32,489 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)] === [2021-11-07 19:22:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash 535291485, now seen corresponding path program 1 times [2021-11-07 19:22:32,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:32,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271348531] [2021-11-07 19:22:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:32,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:22:32,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:32,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271348531] [2021-11-07 19:22:32,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271348531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:32,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:32,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:32,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528450121] [2021-11-07 19:22:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:32,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:22:32,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:22:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:22:32,710 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) [2021-11-07 19:22:34,765 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 [] [2021-11-07 19:22:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:37,405 INFO L93 Difference]: Finished difference Result 195904 states and 235313 transitions. [2021-11-07 19:22:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:22:37,405 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 [2021-11-07 19:22:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:22:37,869 INFO L225 Difference]: With dead ends: 195904 [2021-11-07 19:22:37,870 INFO L226 Difference]: Without dead ends: 130624 [2021-11-07 19:22:38,143 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 [2021-11-07 19:22:38,144 INFO L933 BasicCegarLoop]: 40225 mSDtfsCounter, 19896 mSDsluCounter, 20310 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2075.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19896 SdHoareTripleChecker+Valid, 60535 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.57ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2223.66ms IncrementalHoareTripleChecker+Time [2021-11-07 19:22:38,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19896 Valid, 60535 Invalid, 32 Unknown, 0 Unchecked, 43.57ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2223.66ms Time] [2021-11-07 19:22:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130624 states. [2021-11-07 19:22:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130624 to 130591. [2021-11-07 19:22:41,003 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) [2021-11-07 19:22:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130591 states to 130591 states and 156875 transitions. [2021-11-07 19:22:41,328 INFO L78 Accepts]: Start accepts. Automaton has 130591 states and 156875 transitions. Word has length 155 [2021-11-07 19:22:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:22:41,329 INFO L470 AbstractCegarLoop]: Abstraction has 130591 states and 156875 transitions. [2021-11-07 19:22:41,329 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) [2021-11-07 19:22:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 130591 states and 156875 transitions. [2021-11-07 19:22:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 19:22:41,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:41,338 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] [2021-11-07 19:22:41,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:22:41,338 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)] === [2021-11-07 19:22:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1115956186, now seen corresponding path program 1 times [2021-11-07 19:22:41,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:41,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42147098] [2021-11-07 19:22:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:41,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 19:22:41,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:41,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42147098] [2021-11-07 19:22:41,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42147098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:41,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:41,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:41,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117963687] [2021-11-07 19:22:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:41,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:22:41,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:22:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:22:41,656 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) [2021-11-07 19:22:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:43,937 INFO L93 Difference]: Finished difference Result 130591 states and 156875 transitions. [2021-11-07 19:22:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:22:43,938 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 [2021-11-07 19:22:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:22:44,390 INFO L225 Difference]: With dead ends: 130591 [2021-11-07 19:22:44,390 INFO L226 Difference]: Without dead ends: 130585 [2021-11-07 19:22:44,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:22:44,480 INFO L933 BasicCegarLoop]: 20369 mSDtfsCounter, 20234 mSDsluCounter, 20273 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20234 SdHoareTripleChecker+Valid, 40642 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.53ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.00ms IncrementalHoareTripleChecker+Time [2021-11-07 19:22:44,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20234 Valid, 40642 Invalid, 106 Unknown, 0 Unchecked, 48.53ms Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 144.00ms Time] [2021-11-07 19:22:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130585 states. [2021-11-07 19:22:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130585 to 130585. [2021-11-07 19:22:47,523 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) [2021-11-07 19:22:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130585 states to 130585 states and 156869 transitions. [2021-11-07 19:22:47,891 INFO L78 Accepts]: Start accepts. Automaton has 130585 states and 156869 transitions. Word has length 156 [2021-11-07 19:22:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:22:47,892 INFO L470 AbstractCegarLoop]: Abstraction has 130585 states and 156869 transitions. [2021-11-07 19:22:47,892 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) [2021-11-07 19:22:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 130585 states and 156869 transitions. [2021-11-07 19:22:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 19:22:47,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:22:47,902 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] [2021-11-07 19:22:47,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:22:47,903 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)] === [2021-11-07 19:22:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:22:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1307339299, now seen corresponding path program 1 times [2021-11-07 19:22:47,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:22:47,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060538644] [2021-11-07 19:22:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:22:47,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:22:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:22:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 19:22:48,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:22:48,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060538644] [2021-11-07 19:22:48,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060538644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:22:48,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:22:48,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:22:48,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080447535] [2021-11-07 19:22:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:22:48,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:22:48,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:22:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:22:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:22:48,534 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) [2021-11-07 19:22:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:22:50,832 INFO L93 Difference]: Finished difference Result 130585 states and 156869 transitions. [2021-11-07 19:22:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:22:50,832 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 158 [2021-11-07 19:22:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted.