./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.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 c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:16:16,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:16:16,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:16:16,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:16:16,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:16:16,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:16:16,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:16:16,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:16:16,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:16:16,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:16:16,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:16:16,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:16:16,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:16:16,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:16:16,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:16:16,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:16:16,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:16:16,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:16:16,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:16:16,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:16:16,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:16:16,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:16:16,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:16:16,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:16:16,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:16:16,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:16:16,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:16:16,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:16:16,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:16:16,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:16:16,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:16:16,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:16:16,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:16:16,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:16:16,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:16:16,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:16:16,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:16:16,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:16:16,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:16:16,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:16:16,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:16:16,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:16:17,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:16:17,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:16:17,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:16:17,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:16:17,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:16:17,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:16:17,034 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:16:17,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:16:17,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:16:17,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:16:17,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:16:17,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:16:17,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:16:17,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:16:17,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:16:17,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:16:17,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:16:17,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:16:17,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:16:17,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:16:17,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:16:17,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:16:17,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:16:17,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:16:17,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f [2021-11-06 20:16:17,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:16:17,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:16:17,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:16:17,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:16:17,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:16:17,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 20:16:17,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b855984/d358c954f0534591beab4d61da898937/FLAG1858d5050 [2021-11-06 20:16:18,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:16:18,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 20:16:18,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b855984/d358c954f0534591beab4d61da898937/FLAG1858d5050 [2021-11-06 20:16:18,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b855984/d358c954f0534591beab4d61da898937 [2021-11-06 20:16:18,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:16:18,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:16:18,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:16:18,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:16:18,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:16:18,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:16:18" (1/1) ... [2021-11-06 20:16:18,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf9c327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:18, skipping insertion in model container [2021-11-06 20:16:18,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:16:18" (1/1) ... [2021-11-06 20:16:18,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:16:18,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:16:20,782 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-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2021-11-06 20:16:20,785 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-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2021-11-06 20:16:20,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:16:20,860 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:16:21,230 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-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2021-11-06 20:16:21,231 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-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2021-11-06 20:16:21,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:16:21,364 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:16:21,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21 WrapperNode [2021-11-06 20:16:21,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:16:21,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:16:21,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:16:21,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:16:21,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:21,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:28,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:16:28,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:16:28,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:16:28,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:16:28,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:28,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:28,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:28,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:30,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:30,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:30,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:31,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:16:31,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:16:31,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:16:31,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:16:31,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (1/1) ... [2021-11-06 20:16:31,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:16:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:16:31,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:16:31,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:16:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 20:16:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:16:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:16:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:16:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:16:31,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:16:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:16:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:16:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:16:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:16:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:17:58,936 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:17:58,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:17:58,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:17:58,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:17:58,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:17:58,943 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:17:59,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:17:59,166 INFO L299 CfgBuilder]: Removed 36416 assume(true) statements. [2021-11-06 20:17:59,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:17:59 BoogieIcfgContainer [2021-11-06 20:17:59,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:17:59,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:17:59,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:17:59,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:17:59,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:16:18" (1/3) ... [2021-11-06 20:17:59,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a860f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:17:59, skipping insertion in model container [2021-11-06 20:17:59,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:21" (2/3) ... [2021-11-06 20:17:59,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a860f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:17:59, skipping insertion in model container [2021-11-06 20:17:59,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:17:59" (3/3) ... [2021-11-06 20:17:59,194 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 20:17:59,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:17:59,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 20:17:59,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:17:59,323 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:17:59,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 20:17:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 23391 states, 23381 states have (on average 1.207989393096959) internal successors, (28244), 23390 states have internal predecessors, (28244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:17:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 20:17:59,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:17:59,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:17:59,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:17:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:17:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 633292136, now seen corresponding path program 1 times [2021-11-06 20:17:59,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:17:59,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409608814] [2021-11-06 20:17:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:17:59,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:18:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:18:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:18:00,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:18:00,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409608814] [2021-11-06 20:18:00,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409608814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:18:00,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:18:00,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:18:00,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314342733] [2021-11-06 20:18:00,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:18:00,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:18:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:18:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:00,327 INFO L87 Difference]: Start difference. First operand has 23391 states, 23381 states have (on average 1.207989393096959) internal successors, (28244), 23390 states have internal predecessors, (28244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:18:04,196 INFO L93 Difference]: Finished difference Result 67155 states and 81041 transitions. [2021-11-06 20:18:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:18:04,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-06 20:18:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:18:04,387 INFO L225 Difference]: With dead ends: 67155 [2021-11-06 20:18:04,388 INFO L226 Difference]: Without dead ends: 43434 [2021-11-06 20:18:04,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43434 states. [2021-11-06 20:18:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43434 to 43387. [2021-11-06 20:18:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43387 states, 43377 states have (on average 1.1995988657583512) internal successors, (52035), 43386 states have internal predecessors, (52035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43387 states to 43387 states and 52035 transitions. [2021-11-06 20:18:06,052 INFO L78 Accepts]: Start accepts. Automaton has 43387 states and 52035 transitions. Word has length 63 [2021-11-06 20:18:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:18:06,054 INFO L470 AbstractCegarLoop]: Abstraction has 43387 states and 52035 transitions. [2021-11-06 20:18:06,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 43387 states and 52035 transitions. [2021-11-06 20:18:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 20:18:06,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:18:06,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:18:06,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:18:06,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:18:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:18:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2059571142, now seen corresponding path program 1 times [2021-11-06 20:18:06,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:18:06,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135669422] [2021-11-06 20:18:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:18:06,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:18:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:18:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:18:06,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:18:06,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135669422] [2021-11-06 20:18:06,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135669422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:18:06,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:18:06,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:18:06,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928502273] [2021-11-06 20:18:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:18:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:18:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:18:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:06,366 INFO L87 Difference]: Start difference. First operand 43387 states and 52035 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:18:10,039 INFO L93 Difference]: Finished difference Result 106550 states and 127785 transitions. [2021-11-06 20:18:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:18:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-06 20:18:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:18:10,236 INFO L225 Difference]: With dead ends: 106550 [2021-11-06 20:18:10,237 INFO L226 Difference]: Without dead ends: 63231 [2021-11-06 20:18:10,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63231 states. [2021-11-06 20:18:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63231 to 63213. [2021-11-06 20:18:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63213 states, 63203 states have (on average 1.1990411847538882) internal successors, (75783), 63212 states have internal predecessors, (75783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63213 states to 63213 states and 75783 transitions. [2021-11-06 20:18:12,023 INFO L78 Accepts]: Start accepts. Automaton has 63213 states and 75783 transitions. Word has length 72 [2021-11-06 20:18:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:18:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 63213 states and 75783 transitions. [2021-11-06 20:18:12,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 63213 states and 75783 transitions. [2021-11-06 20:18:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 20:18:12,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:18:12,033 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:18:12,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:18:12,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 20:18:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:18:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1736663696, now seen corresponding path program 1 times [2021-11-06 20:18:12,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:18:12,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172671511] [2021-11-06 20:18:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:18:12,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:18:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:18:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:18:12,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:18:12,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172671511] [2021-11-06 20:18:12,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172671511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:18:12,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:18:12,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:18:12,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366726267] [2021-11-06 20:18:12,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:18:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:18:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:18:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:12,274 INFO L87 Difference]: Start difference. First operand 63213 states and 75783 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:18:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:18:16,453 INFO L93 Difference]: Finished difference Result 173851 states and 208510 transitions. [2021-11-06 20:18:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:18:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-06 20:18:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:18:16,840 INFO L225 Difference]: With dead ends: 173851 [2021-11-06 20:18:16,840 INFO L226 Difference]: Without dead ends: 110706 [2021-11-06 20:18:16,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:18:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110706 states.