/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -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 -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:55:58,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:55:58,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:55:58,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:55:58,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:55:58,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:55:58,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:55:58,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:55:58,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:55:58,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:55:58,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:55:58,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:55:58,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:55:58,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:55:58,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:55:58,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:55:58,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:55:58,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:55:58,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:55:58,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:55:58,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:55:58,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:55:58,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:55:58,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:55:59,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:55:59,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:55:59,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:55:59,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:55:59,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:55:59,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:55:59,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:55:59,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:55:59,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:55:59,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:55:59,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:55:59,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:55:59,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:55:59,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:55:59,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:55:59,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:55:59,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:55:59,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:55:59,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:55:59,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:55:59,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:55:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:55:59,048 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:55:59,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:55:59,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:55:59,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:55:59,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:55:59,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:55:59,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:55:59,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:55:59,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:55:59,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:55:59,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:55:59,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:55:59,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:55:59,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:55:59,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:55:59,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:55:59,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:55:59,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:55:59,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:55:59,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:55:59,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:55:59,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:55:59,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:55:59,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:55:59,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:55:59,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:55:59,468 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:55:59,469 INFO L432 ainManager$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 [2020-12-22 14:55:59,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506aafb47/cd6ff9e769dd452ab95c127fd6293908/FLAG66dbc54b5 [2020-12-22 14:56:00,828 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:56:00,829 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 [2020-12-22 14:56:00,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506aafb47/cd6ff9e769dd452ab95c127fd6293908/FLAG66dbc54b5 [2020-12-22 14:56:01,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/506aafb47/cd6ff9e769dd452ab95c127fd6293908 [2020-12-22 14:56:01,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:56:01,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:56:01,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:56:01,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:56:01,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:56:01,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:56:01" (1/1) ... [2020-12-22 14:56:01,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2360ddcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:01, skipping insertion in model container [2020-12-22 14:56:01,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:56:01" (1/1) ... [2020-12-22 14:56:01,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:56:01,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:56:04,623 WARN L226 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] [2020-12-22 14:56:04,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:56:04,768 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:56:05,383 WARN L226 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] [2020-12-22 14:56:05,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:56:06,151 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:56:06,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06 WrapperNode [2020-12-22 14:56:06,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:56:06,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:56:06,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:56:06,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:56:06,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:06,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:09,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:56:09,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:56:09,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:56:09,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:56:09,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:09,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:10,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:10,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:12,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:13,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:13,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... [2020-12-22 14:56:13,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:56:14,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:56:14,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:56:14,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:56:14,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:56:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2020-12-22 14:56:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2020-12-22 14:56:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:56:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:56:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2020-12-22 14:56:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2020-12-22 14:56:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2020-12-22 14:56:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2020-12-22 14:56:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2020-12-22 14:56:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2020-12-22 14:56:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2020-12-22 14:56:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2020-12-22 14:56:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2020-12-22 14:56:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2020-12-22 14:56:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2020-12-22 14:56:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2020-12-22 14:56:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2020-12-22 14:56:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2020-12-22 14:56:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:56:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 14:56:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2020-12-22 14:56:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2020-12-22 14:56:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2020-12-22 14:56:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2020-12-22 14:56:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2020-12-22 14:56:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2020-12-22 14:56:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:56:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2020-12-22 14:56:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2020-12-22 14:56:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-12-22 14:56:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:56:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2020-12-22 14:56:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2020-12-22 14:56:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:56:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2020-12-22 14:56:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2020-12-22 14:56:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2020-12-22 14:56:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2020-12-22 14:56:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:56:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:56:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:56:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2020-12-22 14:56:14,115 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2020-12-22 14:56:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2020-12-22 14:56:14,115 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2020-12-22 14:56:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:56:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:56:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:56:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:56:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:56:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2020-12-22 14:56:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2020-12-22 14:56:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2020-12-22 14:56:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2020-12-22 14:56:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2020-12-22 14:56:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2020-12-22 14:56:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2020-12-22 14:56:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2020-12-22 14:56:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:56:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 14:56:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:56:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:57:32,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:57:32,609 INFO L299 CfgBuilder]: Removed 22054 assume(true) statements. [2020-12-22 14:57:32,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:57:32 BoogieIcfgContainer [2020-12-22 14:57:32,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:57:32,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:57:32,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:57:32,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:57:32,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:56:01" (1/3) ... [2020-12-22 14:57:32,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2d8833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:57:32, skipping insertion in model container [2020-12-22 14:57:32,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:06" (2/3) ... [2020-12-22 14:57:32,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2d8833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:57:32, skipping insertion in model container [2020-12-22 14:57:32,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:57:32" (3/3) ... [2020-12-22 14:57:32,637 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 [2020-12-22 14:57:32,644 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:57:32,655 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 14:57:32,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 14:57:32,756 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:57:32,756 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:57:32,756 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:57:32,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:57:32,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:57:32,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:57:32,757 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:57:32,757 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:57:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17763 states. [2020-12-22 14:57:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 14:57:33,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:33,317 INFO L422 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] [2020-12-22 14:57:33,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1334055758, now seen corresponding path program 1 times [2020-12-22 14:57:33,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:33,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144057449] [2020-12-22 14:57:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:57:34,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144057449] [2020-12-22 14:57:34,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:34,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:57:34,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300136034] [2020-12-22 14:57:34,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:57:34,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:34,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:57:34,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:57:34,199 INFO L87 Difference]: Start difference. First operand 17763 states. Second operand 2 states. [2020-12-22 14:57:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:35,132 INFO L93 Difference]: Finished difference Result 35069 states and 45744 transitions. [2020-12-22 14:57:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:57:35,134 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 50 [2020-12-22 14:57:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:35,319 INFO L225 Difference]: With dead ends: 35069 [2020-12-22 14:57:35,320 INFO L226 Difference]: Without dead ends: 17236 [2020-12-22 14:57:35,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:57:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2020-12-22 14:57:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17236. [2020-12-22 14:57:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17236 states. [2020-12-22 14:57:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 22208 transitions. [2020-12-22 14:57:36,786 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 22208 transitions. Word has length 50 [2020-12-22 14:57:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:36,787 INFO L481 AbstractCegarLoop]: Abstraction has 17236 states and 22208 transitions. [2020-12-22 14:57:36,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:57:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 22208 transitions. [2020-12-22 14:57:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 14:57:36,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:36,791 INFO L422 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] [2020-12-22 14:57:36,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:57:36,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:36,793 INFO L82 PathProgramCache]: Analyzing trace with hash -978942790, now seen corresponding path program 1 times [2020-12-22 14:57:36,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:36,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163155622] [2020-12-22 14:57:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:57:37,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163155622] [2020-12-22 14:57:37,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:37,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:37,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751079493] [2020-12-22 14:57:37,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:57:37,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:37,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:57:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:57:37,294 INFO L87 Difference]: Start difference. First operand 17236 states and 22208 transitions. Second operand 3 states. [2020-12-22 14:57:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:39,447 INFO L93 Difference]: Finished difference Result 50711 states and 65285 transitions. [2020-12-22 14:57:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:57:39,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 14:57:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:39,723 INFO L225 Difference]: With dead ends: 50711 [2020-12-22 14:57:39,723 INFO L226 Difference]: Without dead ends: 33500 [2020-12-22 14:57:39,817 INFO L677 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 [2020-12-22 14:57:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33500 states. [2020-12-22 14:57:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33500 to 31559. [2020-12-22 14:57:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31559 states. [2020-12-22 14:57:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 40849 transitions. [2020-12-22 14:57:41,276 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 40849 transitions. Word has length 50 [2020-12-22 14:57:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:41,277 INFO L481 AbstractCegarLoop]: Abstraction has 31559 states and 40849 transitions. [2020-12-22 14:57:41,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:57:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 40849 transitions. [2020-12-22 14:57:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 14:57:41,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:41,284 INFO L422 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] [2020-12-22 14:57:41,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:57:41,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash -41393822, now seen corresponding path program 1 times [2020-12-22 14:57:41,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:41,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280409233] [2020-12-22 14:57:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:57:41,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280409233] [2020-12-22 14:57:41,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:41,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:41,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053224190] [2020-12-22 14:57:41,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:41,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:41,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:41,931 INFO L87 Difference]: Start difference. First operand 31559 states and 40849 transitions. Second operand 4 states. [2020-12-22 14:57:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:44,946 INFO L93 Difference]: Finished difference Result 107607 states and 139916 transitions. [2020-12-22 14:57:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:44,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 14:57:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:45,483 INFO L225 Difference]: With dead ends: 107607 [2020-12-22 14:57:45,483 INFO L226 Difference]: Without dead ends: 76073 [2020-12-22 14:57:45,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:57:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76073 states. [2020-12-22 14:57:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76073 to 60345. [2020-12-22 14:57:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60345 states. [2020-12-22 14:57:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60345 states to 60345 states and 78219 transitions. [2020-12-22 14:57:48,444 INFO L78 Accepts]: Start accepts. Automaton has 60345 states and 78219 transitions. Word has length 60 [2020-12-22 14:57:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:48,445 INFO L481 AbstractCegarLoop]: Abstraction has 60345 states and 78219 transitions. [2020-12-22 14:57:48,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 60345 states and 78219 transitions. [2020-12-22 14:57:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 14:57:48,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:48,448 INFO L422 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] [2020-12-22 14:57:48,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:57:48,449 INFO L429 AbstractCegarLoop]: === Iteration 4 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash 631590168, now seen corresponding path program 1 times [2020-12-22 14:57:48,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698199476] [2020-12-22 14:57:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:57:49,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698199476] [2020-12-22 14:57:49,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:49,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:49,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205722577] [2020-12-22 14:57:49,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:49,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:49,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:49,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:49,028 INFO L87 Difference]: Start difference. First operand 60345 states and 78219 transitions. Second operand 4 states. [2020-12-22 14:57:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:53,584 INFO L93 Difference]: Finished difference Result 207593 states and 270694 transitions. [2020-12-22 14:57:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:53,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 14:57:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:54,714 INFO L225 Difference]: With dead ends: 207593 [2020-12-22 14:57:54,714 INFO L226 Difference]: Without dead ends: 147273 [2020-12-22 14:57:55,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:57:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147273 states. [2020-12-22 14:57:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147273 to 119965. [2020-12-22 14:57:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119965 states. [2020-12-22 14:58:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119965 states to 119965 states and 156181 transitions. [2020-12-22 14:58:00,141 INFO L78 Accepts]: Start accepts. Automaton has 119965 states and 156181 transitions. Word has length 61 [2020-12-22 14:58:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:00,142 INFO L481 AbstractCegarLoop]: Abstraction has 119965 states and 156181 transitions. [2020-12-22 14:58:00,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:58:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 119965 states and 156181 transitions. [2020-12-22 14:58:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 14:58:00,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:00,146 INFO L422 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] [2020-12-22 14:58:00,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:58:00,146 INFO L429 AbstractCegarLoop]: === Iteration 5 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 179007938, now seen corresponding path program 1 times [2020-12-22 14:58:00,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:00,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336530997] [2020-12-22 14:58:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:58:00,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336530997] [2020-12-22 14:58:00,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:00,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:00,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441795295] [2020-12-22 14:58:00,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:58:00,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:58:00,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:58:00,536 INFO L87 Difference]: Start difference. First operand 119965 states and 156181 transitions. Second operand 4 states. [2020-12-22 14:58:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:08,551 INFO L93 Difference]: Finished difference Result 413051 states and 541354 transitions. [2020-12-22 14:58:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:58:08,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 14:58:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:10,661 INFO L225 Difference]: With dead ends: 413051 [2020-12-22 14:58:10,662 INFO L226 Difference]: Without dead ends: 293111 [2020-12-22 14:58:11,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:58:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293111 states. [2020-12-22 14:58:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293111 to 238535. [2020-12-22 14:58:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238535 states. [2020-12-22 14:58:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238535 states to 238535 states and 312202 transitions. [2020-12-22 14:58:19,524 INFO L78 Accepts]: Start accepts. Automaton has 238535 states and 312202 transitions. Word has length 62 [2020-12-22 14:58:19,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:19,525 INFO L481 AbstractCegarLoop]: Abstraction has 238535 states and 312202 transitions. [2020-12-22 14:58:19,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:58:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 238535 states and 312202 transitions. [2020-12-22 14:58:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 14:58:19,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:19,528 INFO L422 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] [2020-12-22 14:58:19,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:58:19,529 INFO L429 AbstractCegarLoop]: === Iteration 6 === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -631591742, now seen corresponding path program 1 times [2020-12-22 14:58:19,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:19,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733299214] [2020-12-22 14:58:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:58:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733299214] [2020-12-22 14:58:19,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:19,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:19,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656783021] [2020-12-22 14:58:19,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:58:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:58:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:58:19,856 INFO L87 Difference]: Start difference. First operand 238535 states and 312202 transitions. Second operand 4 states. [2020-12-22 14:58:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:38,829 INFO L93 Difference]: Finished difference Result 751321 states and 982033 transitions. [2020-12-22 14:58:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:58:38,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 14:58:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:45,181 INFO L225 Difference]: With dead ends: 751321 [2020-12-22 14:58:45,181 INFO L226 Difference]: Without dead ends: 512811 [2020-12-22 14:58:47,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:58:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512811 states. [2020-12-22 14:59:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512811 to 455283. [2020-12-22 14:59:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455283 states.