./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.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 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:08:50,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:08:50,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:08:50,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:08:50,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:08:50,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:08:50,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:08:50,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:08:50,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:08:50,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:08:50,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:08:50,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:08:50,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:08:50,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:08:50,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:08:50,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:08:50,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:08:50,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:08:50,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:08:50,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:08:50,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:08:50,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:08:50,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:08:50,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:08:50,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:08:50,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:08:50,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:08:50,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:08:50,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:08:50,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:08:50,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:08:50,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:08:50,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:08:50,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:08:50,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:08:50,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:08:50,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:08:50,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:08:50,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:08:50,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:08:50,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:08:50,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:08:51,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:08:51,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:08:51,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:08:51,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:08:51,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:08:51,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:08:51,012 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:08:51,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:08:51,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:08:51,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:08:51,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:08:51,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:08:51,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:08:51,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:08:51,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:08:51,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:08:51,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:08:51,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:08:51,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:08:51,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:08:51,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:08:51,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:08:51,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:08:51,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:08:51,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:08:51,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:08:51,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:08:51,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:08:51,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:08:51,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2021-11-05 19:08:51,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:08:51,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:08:51,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:08:51,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:08:51,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:08:51,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-05 19:08:51,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe24968ba/f8b40daea4a347fba25ba941166fd78a/FLAGd518012cd [2021-11-05 19:08:52,357 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:08:52,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-05 19:08:52,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe24968ba/f8b40daea4a347fba25ba941166fd78a/FLAGd518012cd [2021-11-05 19:08:52,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe24968ba/f8b40daea4a347fba25ba941166fd78a [2021-11-05 19:08:52,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:08:52,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:08:52,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:08:52,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:08:52,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:08:52,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:08:52" (1/1) ... [2021-11-05 19:08:52,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b921d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:52, skipping insertion in model container [2021-11-05 19:08:52,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:08:52" (1/1) ... [2021-11-05 19:08:52,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:08:53,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:08:55,942 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-05 19:08:56,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:08:56,091 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:08:56,708 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-05 19:08:56,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:08:56,856 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:08:56,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56 WrapperNode [2021-11-05 19:08:56,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:08:56,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:08:56,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:08:56,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:08:56,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:08:56,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:08:59,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:08:59,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:08:59,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:08:59,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:08:59,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:08:59,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:00,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:00,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:02,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:02,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:02,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:03,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:09:03,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:09:03,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:09:03,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:09:03,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (1/1) ... [2021-11-05 19:09:03,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:09:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:09:03,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:09:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:09:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-05 19:09:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-05 19:09:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:09:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:09:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-05 19:09:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-05 19:09:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-05 19:09:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-05 19:09:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-05 19:09:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-05 19:09:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-05 19:09:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-05 19:09:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-05 19:09:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-05 19:09:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-05 19:09:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-05 19:09:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-05 19:09:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-05 19:09:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:09:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:09:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-05 19:09:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-05 19:09:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-05 19:09:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-05 19:09:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-05 19:09:03,165 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-05 19:09:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:09:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-05 19:09:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-05 19:09:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-05 19:09:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:09:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-05 19:09:03,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-05 19:09:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:09:03,166 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-05 19:09:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-05 19:09:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-05 19:09:03,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-05 19:09:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:09:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:09:03,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:09:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-05 19:09:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-05 19:09:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-05 19:09:03,168 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-05 19:09:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:09:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:09:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:09:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 19:09:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 19:09:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-05 19:09:03,169 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-05 19:09:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-05 19:09:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-05 19:09:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-05 19:09:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-05 19:09:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-05 19:09:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-05 19:09:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:09:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 19:09:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:09:03,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:09:52,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:09:52,486 INFO L299 CfgBuilder]: Removed 22054 assume(true) statements. [2021-11-05 19:09:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:09:52 BoogieIcfgContainer [2021-11-05 19:09:52,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:09:52,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:09:52,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:09:52,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:09:52,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:08:52" (1/3) ... [2021-11-05 19:09:52,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ace277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:09:52, skipping insertion in model container [2021-11-05 19:09:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:08:56" (2/3) ... [2021-11-05 19:09:52,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ace277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:09:52, skipping insertion in model container [2021-11-05 19:09:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:09:52" (3/3) ... [2021-11-05 19:09:52,512 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-05 19:09:52,517 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:09:52,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-05 19:09:52,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:09:52,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 19:09:52,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-05 19:09:52,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 17763 states, 17650 states have (on average 1.301643059490085) internal successors, (22974), 17659 states have internal predecessors, (22974), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-05 19:09:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 19:09:52,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:09:52,873 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] [2021-11-05 19:09:52,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 19:09:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:09:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1334055758, now seen corresponding path program 1 times [2021-11-05 19:09:52,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:09:52,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017641526] [2021-11-05 19:09:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:09:52,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:09:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:09:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:09:53,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:09:53,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017641526] [2021-11-05 19:09:53,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017641526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:09:53,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:09:53,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:09:53,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615621509] [2021-11-05 19:09:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:09:53,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:09:53,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:09:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:09:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:09:53,563 INFO L87 Difference]: Start difference. First operand has 17763 states, 17650 states have (on average 1.301643059490085) internal successors, (22974), 17659 states have internal predecessors, (22974), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:09:54,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:09:54,577 INFO L93 Difference]: Finished difference Result 35069 states and 45744 transitions. [2021-11-05 19:09:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:09:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-05 19:09:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:09:54,798 INFO L225 Difference]: With dead ends: 35069 [2021-11-05 19:09:54,798 INFO L226 Difference]: Without dead ends: 17236 [2021-11-05 19:09:54,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:09:54,957 INFO L933 BasicCegarLoop]: 22351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:09:54,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22351 Invalid, 0 Unknown, 0 Unchecked, 50.89ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:09:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2021-11-05 19:09:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17236. [2021-11-05 19:09:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17236 states, 17124 states have (on average 1.2874328427937398) internal successors, (22046), 17132 states have internal predecessors, (22046), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-05 19:09:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 22208 transitions. [2021-11-05 19:09:55,873 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 22208 transitions. Word has length 50 [2021-11-05 19:09:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:09:55,875 INFO L470 AbstractCegarLoop]: Abstraction has 17236 states and 22208 transitions. [2021-11-05 19:09:55,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:09:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 22208 transitions. [2021-11-05 19:09:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 19:09:55,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:09:55,883 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] [2021-11-05 19:09:55,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:09:55,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 19:09:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:09:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -978942790, now seen corresponding path program 1 times [2021-11-05 19:09:55,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:09:55,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693642554] [2021-11-05 19:09:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:09:55,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:09:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:09:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:09:56,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:09:56,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693642554] [2021-11-05 19:09:56,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693642554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:09:56,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:09:56,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:09:56,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124120105] [2021-11-05 19:09:56,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:09:56,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:09:56,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:09:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:09:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:09:56,235 INFO L87 Difference]: Start difference. First operand 17236 states and 22208 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:09:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:09:57,577 INFO L93 Difference]: Finished difference Result 50711 states and 65285 transitions. [2021-11-05 19:09:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:09:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-05 19:09:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:09:57,841 INFO L225 Difference]: With dead ends: 50711 [2021-11-05 19:09:57,841 INFO L226 Difference]: Without dead ends: 33500 [2021-11-05 19:09:58,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:09:58,128 INFO L933 BasicCegarLoop]: 22923 mSDtfsCounter, 20914 mSDsluCounter, 22105 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20914 SdHoareTripleChecker+Valid, 45028 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 244.20ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.28ms IncrementalHoareTripleChecker+Time [2021-11-05 19:09:58,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20914 Valid, 45028 Invalid, 76 Unknown, 0 Unchecked, 244.20ms Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 200.28ms Time] [2021-11-05 19:09:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33500 states. [2021-11-05 19:09:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33500 to 31559. [2021-11-05 19:09:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31559 states, 31345 states have (on average 1.2929334822140692) internal successors, (40527), 31353 states have internal predecessors, (40527), 161 states have call successors, (161), 44 states have call predecessors, (161), 44 states have return successors, (161), 161 states have call predecessors, (161), 161 states have call successors, (161) [2021-11-05 19:09:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 40849 transitions. [2021-11-05 19:09:59,201 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 40849 transitions. Word has length 50 [2021-11-05 19:09:59,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:09:59,201 INFO L470 AbstractCegarLoop]: Abstraction has 31559 states and 40849 transitions. [2021-11-05 19:09:59,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:09:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 40849 transitions. [2021-11-05 19:09:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 19:09:59,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:09:59,209 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] [2021-11-05 19:09:59,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:09:59,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 19:09:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:09:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -41393822, now seen corresponding path program 1 times [2021-11-05 19:09:59,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:09:59,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324094782] [2021-11-05 19:09:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:09:59,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:09:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:09:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:09:59,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:09:59,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324094782] [2021-11-05 19:09:59,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324094782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:09:59,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:09:59,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:09:59,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956046088] [2021-11-05 19:09:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:09:59,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:09:59,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:09:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:09:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:09:59,533 INFO L87 Difference]: Start difference. First operand 31559 states and 40849 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:10:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:10:01,832 INFO L93 Difference]: Finished difference Result 107607 states and 139916 transitions. [2021-11-05 19:10:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:10:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-05 19:10:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:10:02,587 INFO L225 Difference]: With dead ends: 107607 [2021-11-05 19:10:02,587 INFO L226 Difference]: Without dead ends: 76073 [2021-11-05 19:10:02,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:10:02,790 INFO L933 BasicCegarLoop]: 34662 mSDtfsCounter, 28075 mSDsluCounter, 44583 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28079 SdHoareTripleChecker+Valid, 79245 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 128.60ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.92ms IncrementalHoareTripleChecker+Time [2021-11-05 19:10:02,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28079 Valid, 79245 Invalid, 83 Unknown, 0 Unchecked, 128.60ms Time], IncrementalHoareTripleChecker [22 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 119.92ms Time] [2021-11-05 19:10:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76073 states. [2021-11-05 19:10:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76073 to 60345. [2021-11-05 19:10:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60345 states, 59926 states have (on average 1.2896739311817909) internal successors, (77285), 59934 states have internal predecessors, (77285), 322 states have call successors, (322), 88 states have call predecessors, (322), 88 states have return successors, (612), 322 states have call predecessors, (612), 322 states have call successors, (612) [2021-11-05 19:10:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60345 states to 60345 states and 78219 transitions. [2021-11-05 19:10:05,280 INFO L78 Accepts]: Start accepts. Automaton has 60345 states and 78219 transitions. Word has length 60 [2021-11-05 19:10:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:10:05,281 INFO L470 AbstractCegarLoop]: Abstraction has 60345 states and 78219 transitions. [2021-11-05 19:10:05,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:10:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 60345 states and 78219 transitions. [2021-11-05 19:10:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 19:10:05,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:10:05,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:10:05,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:10:05,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 19:10:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:10:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 631590168, now seen corresponding path program 1 times [2021-11-05 19:10:05,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:10:05,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831933362] [2021-11-05 19:10:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:10:05,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:10:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:10:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:10:05,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:10:05,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831933362] [2021-11-05 19:10:05,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831933362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:10:05,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:10:05,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:10:05,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687427233] [2021-11-05 19:10:05,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:10:05,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:10:05,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:10:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:10:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:10:05,550 INFO L87 Difference]: Start difference. First operand 60345 states and 78219 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:10:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:10:09,174 INFO L93 Difference]: Finished difference Result 207593 states and 270694 transitions. [2021-11-05 19:10:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:10:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 19:10:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:10:10,354 INFO L225 Difference]: With dead ends: 207593 [2021-11-05 19:10:10,354 INFO L226 Difference]: Without dead ends: 147273 [2021-11-05 19:10:10,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:10:10,690 INFO L933 BasicCegarLoop]: 28557 mSDtfsCounter, 34183 mSDsluCounter, 48465 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34187 SdHoareTripleChecker+Valid, 77022 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.93ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.55ms IncrementalHoareTripleChecker+Time [2021-11-05 19:10:10,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34187 Valid, 77022 Invalid, 78 Unknown, 0 Unchecked, 91.93ms Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 243.55ms Time] [2021-11-05 19:10:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147273 states. [2021-11-05 19:10:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147273 to 119965. [2021-11-05 19:10:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119965 states, 119136 states have (on average 1.2891821112006447) internal successors, (153588), 119144 states have internal predecessors, (153588), 644 states have call successors, (644), 176 states have call predecessors, (644), 176 states have return successors, (1949), 644 states have call predecessors, (1949), 644 states have call successors, (1949) [2021-11-05 19:10:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119965 states to 119965 states and 156181 transitions. [2021-11-05 19:10:14,721 INFO L78 Accepts]: Start accepts. Automaton has 119965 states and 156181 transitions. Word has length 61 [2021-11-05 19:10:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:10:14,721 INFO L470 AbstractCegarLoop]: Abstraction has 119965 states and 156181 transitions. [2021-11-05 19:10:14,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:10:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 119965 states and 156181 transitions. [2021-11-05 19:10:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 19:10:14,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:10:14,733 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] [2021-11-05 19:10:14,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:10:14,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-05 19:10:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:10:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 179007938, now seen corresponding path program 1 times [2021-11-05 19:10:14,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:10:14,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517997386] [2021-11-05 19:10:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:10:14,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:10:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:10:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:10:15,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:10:15,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517997386] [2021-11-05 19:10:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517997386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:10:15,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:10:15,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:10:15,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410618976] [2021-11-05 19:10:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:10:15,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:10:15,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:10:15,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:10:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:10:15,014 INFO L87 Difference]: Start difference. First operand 119965 states and 156181 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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)