./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:52:45,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:52:45,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:52:45,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:52:45,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:52:45,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:52:45,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:52:45,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:52:45,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:52:45,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:52:45,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:52:45,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:52:45,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:52:45,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:52:45,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:52:45,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:52:45,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:52:45,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:52:45,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:52:45,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:52:45,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:52:45,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:52:45,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:52:45,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:52:45,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:52:45,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:52:45,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:52:45,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:52:45,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:52:45,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:52:45,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:52:45,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:52:45,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:52:45,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:52:45,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:52:45,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:52:45,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:52:45,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:52:45,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:52:45,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:52:45,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:52:45,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:52:45,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:52:45,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:52:45,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:52:45,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:52:45,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:52:45,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:52:45,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:52:45,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:52:45,268 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:52:45,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:52:45,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:52:45,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:52:45,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:52:45,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:52:45,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:52:45,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:52:45,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:52:45,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:52:45,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:52:45,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:52:45,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:52:45,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:52:45,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:52:45,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:52:45,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:52:45,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:52:45,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:52:45,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:52:45,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:52:45,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:52:45,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef [2021-12-28 04:52:45,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:52:45,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:52:45,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:52:45,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:52:45,658 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:52:45,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-12-28 04:52:45,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27c47948/2702cd11c398497a84e7dddcc6f0d21f/FLAGfbf9ae023 [2021-12-28 04:52:46,455 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:52:46,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-12-28 04:52:46,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27c47948/2702cd11c398497a84e7dddcc6f0d21f/FLAGfbf9ae023 [2021-12-28 04:52:46,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27c47948/2702cd11c398497a84e7dddcc6f0d21f [2021-12-28 04:52:46,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:52:46,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:52:46,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:52:46,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:52:46,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:52:46,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:52:46" (1/1) ... [2021-12-28 04:52:46,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc059dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:46, skipping insertion in model container [2021-12-28 04:52:46,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:52:46" (1/1) ... [2021-12-28 04:52:46,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:52:46,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:52:48,499 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2021-12-28 04:52:48,502 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2021-12-28 04:52:48,502 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2021-12-28 04:52:48,503 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2021-12-28 04:52:48,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:52:48,614 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:52:48,984 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277615,277628] [2021-12-28 04:52:48,985 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277762,277775] [2021-12-28 04:52:48,986 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[277901,277914] [2021-12-28 04:52:48,986 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-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i[278059,278072] [2021-12-28 04:52:48,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:52:49,191 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:52:49,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49 WrapperNode [2021-12-28 04:52:49,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:52:49,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:52:49,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:52:49,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:52:49,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,675 INFO L137 Inliner]: procedures = 202, calls = 3694, calls flagged for inlining = 99, calls inlined = 91, statements flattened = 6973 [2021-12-28 04:52:49,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:52:49,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:52:49,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:52:49,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:52:49,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:52:49,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:52:49,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:52:49,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:52:49,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (1/1) ... [2021-12-28 04:52:49,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:52:49,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:52:49,989 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) [2021-12-28 04:52:50,011 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 [2021-12-28 04:52:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_init [2021-12-28 04:52:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_init [2021-12-28 04:52:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure cit_check_button [2021-12-28 04:52:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_check_button [2021-12-28 04:52:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:52:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_01_00_05 [2021-12-28 04:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_01_00_05 [2021-12-28 04:52:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00_05 [2021-12-28 04:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00_05 [2021-12-28 04:52:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure cit_PacketFormat2 [2021-12-28 04:52:50,028 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_PacketFormat2 [2021-12-28 04:52:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:52:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure sd_start [2021-12-28 04:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_start [2021-12-28 04:52:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00 [2021-12-28 04:52:50,029 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00 [2021-12-28 04:52:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_nego [2021-12-28 04:52:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_nego [2021-12-28 04:52:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2021-12-28 04:52:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2021-12-28 04:52:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model2_Packet1 [2021-12-28 04:52:50,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model2_Packet1 [2021-12-28 04:52:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:52:50,030 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-28 04:52:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-28 04:52:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:52:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-28 04:52:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-28 04:52:50,031 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-12-28 04:52:50,031 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-12-28 04:52:50,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:52:50,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:52:50,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:52:50,032 INFO L130 BoogieDeclarations]: Found specification of procedure cit_read_reg [2021-12-28 04:52:50,033 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_read_reg [2021-12-28 04:52:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:52:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-28 04:52:50,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-28 04:52:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_packet_size [2021-12-28 04:52:50,033 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_packet_size [2021-12-28 04:52:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-28 04:52:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-28 04:52:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-28 04:52:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-28 04:52:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-28 04:52:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-28 04:52:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model4_Packet1 [2021-12-28 04:52:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model4_Packet1 [2021-12-28 04:52:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2021-12-28 04:52:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2021-12-28 04:52:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:52:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-12-28 04:52:50,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-12-28 04:52:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:52:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:52:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init [2021-12-28 04:52:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init [2021-12-28 04:52:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:52:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-12-28 04:52:50,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-12-28 04:52:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-28 04:52:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-28 04:52:50,039 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2021-12-28 04:52:50,039 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2021-12-28 04:52:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure cit_restart_stream [2021-12-28 04:52:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_restart_stream [2021-12-28 04:52:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:52:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2021-12-28 04:52:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2021-12-28 04:52:50,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-28 04:52:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-28 04:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:52:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:52:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-28 04:52:50,041 INFO L130 BoogieDeclarations]: Found specification of procedure cit_write_reg [2021-12-28 04:52:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_write_reg [2021-12-28 04:52:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 04:52:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 04:52:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stopN [2021-12-28 04:52:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stopN [2021-12-28 04:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure sd_s_ctrl [2021-12-28 04:52:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_s_ctrl [2021-12-28 04:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_g_ctrl [2021-12-28 04:52:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_g_ctrl [2021-12-28 04:52:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-28 04:52:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-28 04:52:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stop0 [2021-12-28 04:52:50,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stop0 [2021-12-28 04:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_clock_div [2021-12-28 04:52:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_clock_div [2021-12-28 04:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model3_Packet1 [2021-12-28 04:52:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model3_Packet1 [2021-12-28 04:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure cit_Packet_Format1 [2021-12-28 04:52:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_Packet_Format1 [2021-12-28 04:52:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init_controls [2021-12-28 04:52:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init_controls [2021-12-28 04:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_FF_04_02 [2021-12-28 04:52:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_FF_04_02 [2021-12-28 04:52:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-28 04:52:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-28 04:52:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:52:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:52:50,662 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:52:50,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:52:50,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:52:58,417 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-28 04:52:58,537 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:52:58,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:52:58,556 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:52:58,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:52:58 BoogieIcfgContainer [2021-12-28 04:52:58,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:52:58,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:52:58,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:52:58,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:52:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:52:46" (1/3) ... [2021-12-28 04:52:58,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a260d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:52:58, skipping insertion in model container [2021-12-28 04:52:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:52:49" (2/3) ... [2021-12-28 04:52:58,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a260d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:52:58, skipping insertion in model container [2021-12-28 04:52:58,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:52:58" (3/3) ... [2021-12-28 04:52:58,574 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-12-28 04:52:58,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:52:58,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 04:52:58,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:52:58,637 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 [2021-12-28 04:52:58,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 04:52:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 2725 states, 1463 states have (on average 1.21120984278879) internal successors, (1772), 1480 states have internal predecessors, (1772), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) [2021-12-28 04:52:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 04:52:58,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:52:58,712 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:52:58,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:52:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:52:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash -755739248, now seen corresponding path program 1 times [2021-12-28 04:52:58,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:52:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505231968] [2021-12-28 04:52:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:52:58,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:52:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:52:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:52:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:52:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:52:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:52:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:52:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:52:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:52:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:52:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 04:52:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 04:52:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:52:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 04:52:59,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:52:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505231968] [2021-12-28 04:52:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505231968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:52:59,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:52:59,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:52:59,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905560408] [2021-12-28 04:52:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:52:59,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:52:59,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:52:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:52:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:52:59,672 INFO L87 Difference]: Start difference. First operand has 2725 states, 1463 states have (on average 1.21120984278879) internal successors, (1772), 1480 states have internal predecessors, (1772), 1213 states have call successors, (1213), 48 states have call predecessors, (1213), 47 states have return successors, (1207), 1200 states have call predecessors, (1207), 1207 states have call successors, (1207) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:53:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:53:14,909 INFO L93 Difference]: Finished difference Result 10035 states and 15555 transitions. [2021-12-28 04:53:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:53:14,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 117 [2021-12-28 04:53:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:53:15,040 INFO L225 Difference]: With dead ends: 10035 [2021-12-28 04:53:15,040 INFO L226 Difference]: Without dead ends: 7320 [2021-12-28 04:53:15,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:53:15,085 INFO L933 BasicCegarLoop]: 4881 mSDtfsCounter, 4875 mSDsluCounter, 3864 mSDsCounter, 0 mSdLazyCounter, 5862 mSolverCounterSat, 5702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 8745 SdHoareTripleChecker+Invalid, 11564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5702 IncrementalHoareTripleChecker+Valid, 5862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:53:15,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 8745 Invalid, 11564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5702 Valid, 5862 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2021-12-28 04:53:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2021-12-28 04:53:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 5272. [2021-12-28 04:53:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 2815 states have (on average 1.2031971580817051) internal successors, (3387), 2846 states have internal predecessors, (3387), 2364 states have call successors, (2364), 92 states have call predecessors, (2364), 91 states have return successors, (2361), 2347 states have call predecessors, (2361), 2361 states have call successors, (2361) [2021-12-28 04:53:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 8112 transitions. [2021-12-28 04:53:16,513 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 8112 transitions. Word has length 117 [2021-12-28 04:53:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:53:16,516 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 8112 transitions. [2021-12-28 04:53:16,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:53:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 8112 transitions. [2021-12-28 04:53:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-28 04:53:16,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:53:16,533 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:53:16,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:53:16,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:53:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:53:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 201776202, now seen corresponding path program 1 times [2021-12-28 04:53:16,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:53:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152049086] [2021-12-28 04:53:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:53:16,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:53:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:53:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:53:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:53:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:53:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:53:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:53:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:53:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:53:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 04:53:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 04:53:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:53:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 04:53:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 04:53:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:53:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 04:53:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 04:53:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:53:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 04:53:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-28 04:53:17,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:53:17,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152049086] [2021-12-28 04:53:17,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152049086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:53:17,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:53:17,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:53:17,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069023772] [2021-12-28 04:53:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:53:17,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:53:17,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:53:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:53:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:53:17,347 INFO L87 Difference]: Start difference. First operand 5272 states and 8112 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 04:53:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:53:31,895 INFO L93 Difference]: Finished difference Result 19591 states and 30348 transitions. [2021-12-28 04:53:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:53:31,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 185 [2021-12-28 04:53:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:53:32,005 INFO L225 Difference]: With dead ends: 19591 [2021-12-28 04:53:32,006 INFO L226 Difference]: Without dead ends: 14340 [2021-12-28 04:53:32,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:53:32,067 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4705 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 5866 mSolverCounterSat, 5661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 8704 SdHoareTripleChecker+Invalid, 11527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5661 IncrementalHoareTripleChecker+Valid, 5866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:53:32,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6391 Valid, 8704 Invalid, 11527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5661 Valid, 5866 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2021-12-28 04:53:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14340 states. [2021-12-28 04:53:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 10247. [2021-12-28 04:53:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 5418 states have (on average 1.1982281284606866) internal successors, (6492), 5484 states have internal predecessors, (6492), 4654 states have call successors, (4654), 174 states have call predecessors, (4654), 173 states have return successors, (4651), 4616 states have call predecessors, (4651), 4651 states have call successors, (4651) [2021-12-28 04:53:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 15797 transitions. [2021-12-28 04:53:34,854 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 15797 transitions. Word has length 185 [2021-12-28 04:53:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:53:34,855 INFO L470 AbstractCegarLoop]: Abstraction has 10247 states and 15797 transitions. [2021-12-28 04:53:34,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 04:53:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 15797 transitions. [2021-12-28 04:53:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-28 04:53:34,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:53:34,868 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-28 04:53:34,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:53:34,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:53:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:53:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1255827173, now seen corresponding path program 1 times [2021-12-28 04:53:34,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:53:34,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637653539] [2021-12-28 04:53:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:53:34,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:53:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:53:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:53:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 04:53:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:53:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:53:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:53:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:53:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 04:53:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 04:53:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:53:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:53:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:53:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:53:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:53:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 04:53:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 04:53:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:53:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:53:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-28 04:53:35,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:53:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637653539] [2021-12-28 04:53:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637653539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:53:35,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:53:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:53:35,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006179814] [2021-12-28 04:53:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:53:35,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:53:35,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:53:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:53:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:53:35,489 INFO L87 Difference]: Start difference. First operand 10247 states and 15797 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)