./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:08:28,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:08:28,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:08:28,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:08:28,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:08:28,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:08:28,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:08:28,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:08:28,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:08:28,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:08:28,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:08:28,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:08:28,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:08:28,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:08:28,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:08:28,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:08:28,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:08:28,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:08:28,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:08:28,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:08:28,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:08:29,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:08:29,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:08:29,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:08:29,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:08:29,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:08:29,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:08:29,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:08:29,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:08:29,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:08:29,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:08:29,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:08:29,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:08:29,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:08:29,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:08:29,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:08:29,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:08:29,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:08:29,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:08:29,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:08:29,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:08:29,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:08:29,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:08:29,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:08:29,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:08:29,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:08:29,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:08:29,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:08:29,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:08:29,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:08:29,047 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:08:29,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:08:29,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:08:29,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:08:29,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:08:29,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:08:29,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:08:29,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:08:29,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:08:29,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:08:29,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:08:29,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:08:29,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:08:29,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:29,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:08:29,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:08:29,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:08:29,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:08:29,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:08:29,054 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:08:29,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:08:29,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:08:29,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:08:29,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-12-21 16:08:29,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:08:29,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:08:29,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:08:29,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:08:29,261 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:08:29,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-21 16:08:29,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fa3a1ce/413ff0fd14994d41a7d7f29a8bb27806/FLAG592b085a5 [2021-12-21 16:08:29,860 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:08:29,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-21 16:08:29,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fa3a1ce/413ff0fd14994d41a7d7f29a8bb27806/FLAG592b085a5 [2021-12-21 16:08:30,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37fa3a1ce/413ff0fd14994d41a7d7f29a8bb27806 [2021-12-21 16:08:30,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:08:30,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:08:30,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:30,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:08:30,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:08:30,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:30" (1/1) ... [2021-12-21 16:08:30,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50db983d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:30, skipping insertion in model container [2021-12-21 16:08:30,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:30" (1/1) ... [2021-12-21 16:08:30,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:08:30,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:08:30,708 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-12-21 16:08:31,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:31,156 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:08:31,252 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-12-21 16:08:31,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:31,481 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:08:31,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31 WrapperNode [2021-12-21 16:08:31,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:31,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:31,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:08:31,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:08:31,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,682 INFO L137 Inliner]: procedures = 229, calls = 2526, calls flagged for inlining = 102, calls inlined = 99, statements flattened = 4859 [2021-12-21 16:08:31,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:31,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:08:31,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:08:31,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:08:31,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:08:31,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:08:31,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:08:31,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:08:31,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (1/1) ... [2021-12-21 16:08:31,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:08:31,956 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) [2021-12-21 16:08:31,974 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 [2021-12-21 16:08:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-21 16:08:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-21 16:08:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-21 16:08:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:08:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-21 16:08:31,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-21 16:08:31,988 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_rel [2021-12-21 16:08:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_rel [2021-12-21 16:08:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_26 [2021-12-21 16:08:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_26 [2021-12-21 16:08:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 16:08:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 16:08:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-12-21 16:08:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-12-21 16:08:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:08:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:08:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-21 16:08:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-21 16:08:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-12-21 16:08:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-12-21 16:08:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-21 16:08:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-21 16:08:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:08:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:08:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:08:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:08:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-12-21 16:08:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-12-21 16:08:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-12-21 16:08:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-12-21 16:08:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure rc_g_keycode_from_table [2021-12-21 16:08:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_g_keycode_from_table [2021-12-21 16:08:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:08:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:08:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-21 16:08:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-21 16:08:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:08:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:08:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:08:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-21 16:08:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-21 16:08:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-12-21 16:08:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-12-21 16:08:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:08:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-12-21 16:08:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-12-21 16:08:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-12-21 16:08:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-12-21 16:08:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:08:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:08:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2021-12-21 16:08:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2021-12-21 16:08:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:08:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:08:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2021-12-21 16:08:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2021-12-21 16:08:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:08:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:08:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:08:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:08:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:08:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:08:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:08:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:08:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-12-21 16:08:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-12-21 16:08:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2021-12-21 16:08:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2021-12-21 16:08:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2021-12-21 16:08:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2021-12-21 16:08:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-21 16:08:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-21 16:08:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:08:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:08:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:08:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-21 16:08:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-21 16:08:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-21 16:08:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-21 16:08:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-21 16:08:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-21 16:08:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:08:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-12-21 16:08:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-12-21 16:08:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-21 16:08:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-21 16:08:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:08:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-21 16:08:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-21 16:08:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_7 [2021-12-21 16:08:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_7 [2021-12-21 16:08:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:08:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:08:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2021-12-21 16:08:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2021-12-21 16:08:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:08:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:08:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:08:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:08:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:08:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:08:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:08:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-12-21 16:08:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-12-21 16:08:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-21 16:08:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-21 16:08:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-12-21 16:08:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-12-21 16:08:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2021-12-21 16:08:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2021-12-21 16:08:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:08:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:08:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure imon_remote_key_lookup [2021-12-21 16:08:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_remote_key_lookup [2021-12-21 16:08:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:08:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-21 16:08:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-21 16:08:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure tv2int [2021-12-21 16:08:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure tv2int [2021-12-21 16:08:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure stabilize [2021-12-21 16:08:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure stabilize [2021-12-21 16:08:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-12-21 16:08:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-12-21 16:08:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_6 [2021-12-21 16:08:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_6 [2021-12-21 16:08:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-21 16:08:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-21 16:08:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:08:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2021-12-21 16:08:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 16:08:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-21 16:08:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-21 16:08:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-21 16:08:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-12-21 16:08:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-12-21 16:08:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-12-21 16:08:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-12-21 16:08:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-12-21 16:08:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-12-21 16:08:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-21 16:08:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-21 16:08:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-12-21 16:08:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-12-21 16:08:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-12-21 16:08:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-12-21 16:08:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-21 16:08:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-21 16:08:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:08:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-21 16:08:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-21 16:08:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:08:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:08:32,661 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:08:32,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:08:38,297 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:08:47,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-21 16:08:49,650 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:08:49,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:08:49,667 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 16:08:49,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:49 BoogieIcfgContainer [2021-12-21 16:08:49,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:08:49,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:08:49,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:08:49,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:08:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:08:30" (1/3) ... [2021-12-21 16:08:49,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da0dc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:49, skipping insertion in model container [2021-12-21 16:08:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:31" (2/3) ... [2021-12-21 16:08:49,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da0dc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:49, skipping insertion in model container [2021-12-21 16:08:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:49" (3/3) ... [2021-12-21 16:08:49,676 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-21 16:08:49,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:08:49,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:08:49,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:08:49,731 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 [2021-12-21 16:08:49,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:08:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 1488 states, 1096 states have (on average 1.3895985401459854) internal successors, (1523), 1127 states have internal predecessors, (1523), 319 states have call successors, (319), 73 states have call predecessors, (319), 71 states have return successors, (310), 305 states have call predecessors, (310), 310 states have call successors, (310) [2021-12-21 16:08:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 16:08:49,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:49,789 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:49,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 351694781, now seen corresponding path program 1 times [2021-12-21 16:08:49,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812136537] [2021-12-21 16:08:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:49,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:08:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:08:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:08:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:08:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:08:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:08:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:08:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:08:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-21 16:08:50,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812136537] [2021-12-21 16:08:50,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812136537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:50,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:50,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:08:50,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090011491] [2021-12-21 16:08:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:50,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:08:50,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:08:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:08:50,487 INFO L87 Difference]: Start difference. First operand has 1488 states, 1096 states have (on average 1.3895985401459854) internal successors, (1523), 1127 states have internal predecessors, (1523), 319 states have call successors, (319), 73 states have call predecessors, (319), 71 states have return successors, (310), 305 states have call predecessors, (310), 310 states have call successors, (310) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-21 16:08:52,695 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 [] [2021-12-21 16:08:55,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:08:58,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:03,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:07,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:08,765 INFO L93 Difference]: Finished difference Result 4512 states and 6679 transitions. [2021-12-21 16:09:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:09:08,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2021-12-21 16:09:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:08,801 INFO L225 Difference]: With dead ends: 4512 [2021-12-21 16:09:08,801 INFO L226 Difference]: Without dead ends: 2999 [2021-12-21 16:09:08,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:09:08,816 INFO L933 BasicCegarLoop]: 2380 mSDtfsCounter, 2346 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 738 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:08,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 5336 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 1185 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-12-21 16:09:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2021-12-21 16:09:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2875. [2021-12-21 16:09:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2137 states have (on average 1.3827795975666823) internal successors, (2955), 2173 states have internal predecessors, (2955), 597 states have call successors, (597), 141 states have call predecessors, (597), 140 states have return successors, (592), 582 states have call predecessors, (592), 592 states have call successors, (592) [2021-12-21 16:09:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4144 transitions. [2021-12-21 16:09:09,009 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4144 transitions. Word has length 74 [2021-12-21 16:09:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:09,010 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 4144 transitions. [2021-12-21 16:09:09,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-21 16:09:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4144 transitions. [2021-12-21 16:09:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-21 16:09:09,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:09,015 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:09:09,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:09:09,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1853548450, now seen corresponding path program 1 times [2021-12-21 16:09:09,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632644173] [2021-12-21 16:09:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:09,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:09:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:09:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:09:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:09:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:09:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-21 16:09:09,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:09,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632644173] [2021-12-21 16:09:09,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632644173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:09,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:09:09,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:09:09,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506877919] [2021-12-21 16:09:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:09,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:09:09,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:09:09,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:09:09,370 INFO L87 Difference]: Start difference. First operand 2875 states and 4144 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-21 16:09:10,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:13,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:17,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:21,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:25,382 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 [] [2021-12-21 16:09:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:27,275 INFO L93 Difference]: Finished difference Result 8826 states and 13022 transitions. [2021-12-21 16:09:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:09:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2021-12-21 16:09:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:27,302 INFO L225 Difference]: With dead ends: 8826 [2021-12-21 16:09:27,302 INFO L226 Difference]: Without dead ends: 5974 [2021-12-21 16:09:27,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:09:27,314 INFO L933 BasicCegarLoop]: 2549 mSDtfsCounter, 2375 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 715 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 5539 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:27,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2606 Valid, 5539 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 1233 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2021-12-21 16:09:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5974 states. [2021-12-21 16:09:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5974 to 5768. [2021-12-21 16:09:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4289 states have (on average 1.3802751224061554) internal successors, (5920), 4359 states have internal predecessors, (5920), 1186 states have call successors, (1186), 281 states have call predecessors, (1186), 292 states have return successors, (1283), 1169 states have call predecessors, (1283), 1181 states have call successors, (1283) [2021-12-21 16:09:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8389 transitions. [2021-12-21 16:09:27,483 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8389 transitions. Word has length 83 [2021-12-21 16:09:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:27,484 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 8389 transitions. [2021-12-21 16:09:27,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-21 16:09:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8389 transitions. [2021-12-21 16:09:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-21 16:09:27,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:27,487 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:09:27,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:09:27,488 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1624832766, now seen corresponding path program 1 times [2021-12-21 16:09:27,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538839512] [2021-12-21 16:09:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:27,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:09:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:09:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:09:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:09:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:09:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:09:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:09:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:09:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:09:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-21 16:09:27,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:27,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538839512] [2021-12-21 16:09:27,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538839512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:27,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:09:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:09:27,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54288518] [2021-12-21 16:09:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:27,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:09:27,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:09:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:09:27,741 INFO L87 Difference]: Start difference. First operand 5768 states and 8389 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-21 16:09:30,203 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 [] [2021-12-21 16:09:32,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:09:37,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []