./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--scsi--initio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--scsi--initio.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 bca836bbe3a531e36018faf0b4374aec0682953aa5034dcc910310719152fdea --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:22:09,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:22:09,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:22:09,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:22:09,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:22:09,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:22:09,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:22:09,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:22:09,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:22:09,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:22:09,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:22:09,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:22:09,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:22:09,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:22:09,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:22:09,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:22:09,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:22:09,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:22:09,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:22:09,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:22:09,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:22:09,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:22:09,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:22:09,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:22:09,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:22:09,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:22:09,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:22:09,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:22:09,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:22:09,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:22:09,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:22:09,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:22:09,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:22:09,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:22:09,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:22:09,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:22:09,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:22:09,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:22:09,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:22:09,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:22:09,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:22:09,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:22:09,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:22:09,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:22:09,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:22:09,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:22:09,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:22:09,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:22:09,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:22:09,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:22:09,931 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:22:09,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:22:09,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:22:09,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:22:09,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:22:09,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:22:09,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:22:09,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:22:09,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:22:09,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:22:09,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:22:09,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:22:09,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bca836bbe3a531e36018faf0b4374aec0682953aa5034dcc910310719152fdea [2021-12-14 18:22:10,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:22:10,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:22:10,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:22:10,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:22:10,165 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:22:10,166 INFO L432 ainManager$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--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:22:10,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccce2c76/cec4bc67c3144304a9855ab3c2488f25/FLAGabebaf676 [2021-12-14 18:22:10,812 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:22:10,812 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--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:22:10,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccce2c76/cec4bc67c3144304a9855ab3c2488f25/FLAGabebaf676 [2021-12-14 18:22:10,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ccce2c76/cec4bc67c3144304a9855ab3c2488f25 [2021-12-14 18:22:10,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:22:10,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:22:10,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:22:10,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:22:10,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:22:10,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:22:10" (1/1) ... [2021-12-14 18:22:10,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e14184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:10, skipping insertion in model container [2021-12-14 18:22:10,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:22:10" (1/1) ... [2021-12-14 18:22:10,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:22:11,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:22:12,408 WARN L230 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--scsi--initio.ko-entry_point.cil.out.i[238430,238443] [2021-12-14 18:22:12,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:22:12,474 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:22:12,751 WARN L230 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--scsi--initio.ko-entry_point.cil.out.i[238430,238443] [2021-12-14 18:22:12,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:22:12,812 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:22:12,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12 WrapperNode [2021-12-14 18:22:12,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:22:12,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:22:12,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:22:12,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:22:12,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:12,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:12,995 INFO L137 Inliner]: procedures = 213, calls = 1959, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 4536 [2021-12-14 18:22:12,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:22:12,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:22:12,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:22:12,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:22:13,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:22:13,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:22:13,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:22:13,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:22:13,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (1/1) ... [2021-12-14 18:22:13,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:22:13,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:22:13,258 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) [2021-12-14 18:22:13,272 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 [2021-12-14 18:22:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:22:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:22:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:22:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:22:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure initio_status_msg [2021-12-14 18:22:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_status_msg [2021-12-14 18:22:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:22:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:22:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure initio_select_atn_stop [2021-12-14 18:22:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_select_atn_stop [2021-12-14 18:22:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2021-12-14 18:22:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2021-12-14 18:22:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure initio_remove_one [2021-12-14 18:22:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_remove_one [2021-12-14 18:22:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:22:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:22:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:22:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:22:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-12-14 18:22:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-12-14 18:22:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:22:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:22:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_scsi_rst [2021-12-14 18:22:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_scsi_rst [2021-12-14 18:22:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2021-12-14 18:22:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2021-12-14 18:22:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:22:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:22:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-14 18:22:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-14 18:22:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:22:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:22:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure initio_next_state [2021-12-14 18:22:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_next_state [2021-12-14 18:22:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:22:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:22:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:22:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:22:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_pend_scb [2021-12-14 18:22:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_pend_scb [2021-12-14 18:22:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:22:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:22:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_busy_scb [2021-12-14 18:22:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_busy_scb [2021-12-14 18:22:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-14 18:22:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-14 18:22:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:22:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_reject [2021-12-14 18:22:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_reject [2021-12-14 18:22:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:22:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_rd_all [2021-12-14 18:22:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_rd_all [2021-12-14 18:22:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:22:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:22:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:22:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:22:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:22:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:22:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure initio_release_scb [2021-12-14 18:22:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_release_scb [2021-12-14 18:22:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2021-12-14 18:22:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2021-12-14 18:22:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:22:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:22:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-14 18:22:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-14 18:22:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:22:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:22:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:22:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2021-12-14 18:22:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2021-12-14 18:22:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:22:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:22:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:22:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_instr [2021-12-14 18:22:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_instr [2021-12-14 18:22:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:22:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure initio_find_first_pend_scb [2021-12-14 18:22:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_find_first_pend_scb [2021-12-14 18:22:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:22:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:22:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_busy_scb [2021-12-14 18:22:13,306 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_busy_scb [2021-12-14 18:22:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_done_disc [2021-12-14 18:22:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_done_disc [2021-12-14 18:22:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-14 18:22:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-14 18:22:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:22:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:22:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:22:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure initio_stop_bm [2021-12-14 18:22:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_stop_bm [2021-12-14 18:22:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:22:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:22:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2021-12-14 18:22:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2021-12-14 18:22:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:22:13,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:22:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure initio_pop_busy_scb [2021-12-14 18:22:13,309 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_pop_busy_scb [2021-12-14 18:22:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure initio_bad_seq [2021-12-14 18:22:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_bad_seq [2021-12-14 18:22:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:22:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:22:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2021-12-14 18:22:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2021-12-14 18:22:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:22:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-14 18:22:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-14 18:22:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:22:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2021-12-14 18:22:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2021-12-14 18:22:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:22:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:22:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:22:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:22:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:22:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-14 18:22:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-14 18:22:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure initio_reset_scsi [2021-12-14 18:22:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_reset_scsi [2021-12-14 18:22:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_done_scb [2021-12-14 18:22:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_done_scb [2021-12-14 18:22:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_pend_scb [2021-12-14 18:22:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_pend_scb [2021-12-14 18:22:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin [2021-12-14 18:22:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin [2021-12-14 18:22:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:22:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:22:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2021-12-14 18:22:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2021-12-14 18:22:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:22:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:22:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:22:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_busfree [2021-12-14 18:22:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_busfree [2021-12-14 18:22:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure initio_sync_done [2021-12-14 18:22:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_sync_done [2021-12-14 18:22:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_disc [2021-12-14 18:22:13,318 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_disc [2021-12-14 18:22:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:22:13,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:22:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-12-14 18:22:13,318 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-12-14 18:22:13,862 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:22:13,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:22:13,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:22:20,064 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:22:20,075 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:22:20,075 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:22:20,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:22:20 BoogieIcfgContainer [2021-12-14 18:22:20,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:22:20,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:22:20,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:22:20,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:22:20,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:22:10" (1/3) ... [2021-12-14 18:22:20,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a902713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:22:20, skipping insertion in model container [2021-12-14 18:22:20,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:22:12" (2/3) ... [2021-12-14 18:22:20,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a902713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:22:20, skipping insertion in model container [2021-12-14 18:22:20,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:22:20" (3/3) ... [2021-12-14 18:22:20,084 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-12-14 18:22:20,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:22:20,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:22:20,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:22:20,129 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 [2021-12-14 18:22:20,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:22:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 1793 states, 1215 states have (on average 1.3333333333333333) internal successors, (1620), 1250 states have internal predecessors, (1620), 513 states have call successors, (513), 64 states have call predecessors, (513), 63 states have return successors, (507), 501 states have call predecessors, (507), 507 states have call successors, (507) [2021-12-14 18:22:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 18:22:20,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:22:20,181 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:22:20,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:22:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:22:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1560347786, now seen corresponding path program 1 times [2021-12-14 18:22:20,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:22:20,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653718894] [2021-12-14 18:22:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:22:20,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:22:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:22:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:22:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:22:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:22:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:22:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:22:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 18:22:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 18:22:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 18:22:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-14 18:22:20,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:22:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653718894] [2021-12-14 18:22:20,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653718894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:22:20,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:22:20,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:22:20,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281424545] [2021-12-14 18:22:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:22:20,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:22:20,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:22:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:22:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:22:20,718 INFO L87 Difference]: Start difference. First operand has 1793 states, 1215 states have (on average 1.3333333333333333) internal successors, (1620), 1250 states have internal predecessors, (1620), 513 states have call successors, (513), 64 states have call predecessors, (513), 63 states have return successors, (507), 501 states have call predecessors, (507), 507 states have call successors, (507) Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:22:22,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:26,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:28,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:22:35,056 INFO L93 Difference]: Finished difference Result 3882 states and 5785 transitions. [2021-12-14 18:22:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:22:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 128 [2021-12-14 18:22:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:22:35,091 INFO L225 Difference]: With dead ends: 3882 [2021-12-14 18:22:35,091 INFO L226 Difference]: Without dead ends: 2074 [2021-12-14 18:22:35,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:22:35,106 INFO L933 BasicCegarLoop]: 2037 mSDtfsCounter, 1990 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 1567 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 7068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1567 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:22:35,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 3159 Invalid, 7068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1567 Valid, 5498 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2021-12-14 18:22:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2021-12-14 18:22:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1773. [2021-12-14 18:22:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1203 states have (on average 1.3258520365752287) internal successors, (1595), 1230 states have internal predecessors, (1595), 507 states have call successors, (507), 63 states have call predecessors, (507), 62 states have return successors, (506), 500 states have call predecessors, (506), 506 states have call successors, (506) [2021-12-14 18:22:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2608 transitions. [2021-12-14 18:22:35,303 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2608 transitions. Word has length 128 [2021-12-14 18:22:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:22:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 2608 transitions. [2021-12-14 18:22:35,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:22:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2608 transitions. [2021-12-14 18:22:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 18:22:35,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:22:35,317 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:22:35,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:22:35,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:22:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:22:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1164560638, now seen corresponding path program 1 times [2021-12-14 18:22:35,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:22:35,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460245995] [2021-12-14 18:22:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:22:35,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:22:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:22:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:22:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:22:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:22:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:22:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:22:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 18:22:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 18:22:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 18:22:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-14 18:22:35,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:22:35,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460245995] [2021-12-14 18:22:35,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460245995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:22:35,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:22:35,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:22:35,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346142752] [2021-12-14 18:22:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:22:35,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:22:35,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:22:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:22:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:22:35,627 INFO L87 Difference]: Start difference. First operand 1773 states and 2608 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:22:38,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:40,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:42,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:44,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:22:54,197 INFO L93 Difference]: Finished difference Result 5609 states and 8344 transitions. [2021-12-14 18:22:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:22:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 128 [2021-12-14 18:22:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:22:54,227 INFO L225 Difference]: With dead ends: 5609 [2021-12-14 18:22:54,228 INFO L226 Difference]: Without dead ends: 3852 [2021-12-14 18:22:54,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-14 18:22:54,238 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 5098 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 7630 mSolverCounterSat, 4007 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 11640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4007 IncrementalHoareTripleChecker+Valid, 7630 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:22:54,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5494 Valid, 4177 Invalid, 11640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4007 Valid, 7630 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2021-12-14 18:22:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-12-14 18:22:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3274. [2021-12-14 18:22:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 2229 states have (on average 1.3283983849259757) internal successors, (2961), 2278 states have internal predecessors, (2961), 926 states have call successors, (926), 119 states have call predecessors, (926), 118 states have return successors, (925), 914 states have call predecessors, (925), 925 states have call successors, (925) [2021-12-14 18:22:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4812 transitions. [2021-12-14 18:22:54,497 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4812 transitions. Word has length 128 [2021-12-14 18:22:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:22:54,499 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 4812 transitions. [2021-12-14 18:22:54,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:22:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4812 transitions. [2021-12-14 18:22:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 18:22:54,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:22:54,512 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:22:54,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:22:54,512 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:22:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:22:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2047937129, now seen corresponding path program 1 times [2021-12-14 18:22:54,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:22:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549194461] [2021-12-14 18:22:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:22:54,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:22:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:22:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:22:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:22:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:22:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:22:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 18:22:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:22:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:22:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:22:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 18:22:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:22:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 18:22:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:22:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-14 18:22:54,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:22:54,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549194461] [2021-12-14 18:22:54,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549194461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:22:54,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:22:54,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:22:54,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025856571] [2021-12-14 18:22:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:22:54,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:22:54,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:22:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:22:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:22:54,854 INFO L87 Difference]: Start difference. First operand 3274 states and 4812 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:22:57,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:22:59,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:23:01,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:23:03,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:23:05,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:23:09,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:23:11,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []