./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-16 04:54:41,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:54:41,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:54:41,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:54:41,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:54:41,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:54:41,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:54:41,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:54:41,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:54:41,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:54:41,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:54:41,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:54:41,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:54:41,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:54:41,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:54:41,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:54:41,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:54:41,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:54:41,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:54:41,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:54:41,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:54:41,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:54:41,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:54:41,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:54:41,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:54:41,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:54:41,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:54:41,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:54:41,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:54:41,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:54:41,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:54:41,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:54:41,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:54:41,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:54:41,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:54:41,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:54:41,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:54:41,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:54:41,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:54:41,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:54:41,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:54:41,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:54:41,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:54:41,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:54:41,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:54:41,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:54:41,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:54:41,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:54:41,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:54:41,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:54:41,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:54:41,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:54:41,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:54:41,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:54:41,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:54:41,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:54:41,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da295a433f96a090e97fd0ee72a58f7ad7a804da074c3950d4e4dc7d412af0ef [2021-12-16 04:54:41,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:54:41,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:54:41,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:54:41,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:54:41,385 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:54:41,385 INFO L432 ainManager$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 [2021-12-16 04:54:41,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c6949ca/08e4718b5e73462d90ba2f522cf614a8/FLAG99f58c551 [2021-12-16 04:54:42,001 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:54:42,001 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 [2021-12-16 04:54:42,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c6949ca/08e4718b5e73462d90ba2f522cf614a8/FLAG99f58c551 [2021-12-16 04:54:42,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c6949ca/08e4718b5e73462d90ba2f522cf614a8 [2021-12-16 04:54:42,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:54:42,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:54:42,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:54:42,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:54:42,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:54:42,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:54:42" (1/1) ... [2021-12-16 04:54:42,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680e39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:42, skipping insertion in model container [2021-12-16 04:54:42,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:54:42" (1/1) ... [2021-12-16 04:54:42,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:54:42,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:54:43,830 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] [2021-12-16 04:54:43,832 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] [2021-12-16 04:54:43,833 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] [2021-12-16 04:54:43,833 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] [2021-12-16 04:54:43,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:54:43,892 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:54:44,129 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] [2021-12-16 04:54:44,130 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] [2021-12-16 04:54:44,130 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] [2021-12-16 04:54:44,131 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] [2021-12-16 04:54:44,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:54:44,252 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:54:44,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44 WrapperNode [2021-12-16 04:54:44,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:54:44,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:54:44,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:54:44,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:54:44,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,506 INFO L137 Inliner]: procedures = 202, calls = 3694, calls flagged for inlining = 99, calls inlined = 91, statements flattened = 6973 [2021-12-16 04:54:44,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:54:44,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:54:44,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:54:44,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:54:44,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:54:44,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:54:44,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:54:44,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:54:44,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (1/1) ... [2021-12-16 04:54:44,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:54:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:54:44,785 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) [2021-12-16 04:54:44,795 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 [2021-12-16 04:54:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_init [2021-12-16 04:54:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_init [2021-12-16 04:54:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure cit_check_button [2021-12-16 04:54:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_check_button [2021-12-16 04:54:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:54:44,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:54:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_01_00_05 [2021-12-16 04:54:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_01_00_05 [2021-12-16 04:54:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00_05 [2021-12-16 04:54:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00_05 [2021-12-16 04:54:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure cit_PacketFormat2 [2021-12-16 04:54:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_PacketFormat2 [2021-12-16 04:54:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:54:44,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:54:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure sd_start [2021-12-16 04:54:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_start [2021-12-16 04:54:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_x_00 [2021-12-16 04:54:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_x_00 [2021-12-16 04:54:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure sd_isoc_nego [2021-12-16 04:54:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_isoc_nego [2021-12-16 04:54:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2021-12-16 04:54:44,828 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2021-12-16 04:54:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model2_Packet1 [2021-12-16 04:54:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model2_Packet1 [2021-12-16 04:54:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:54:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-16 04:54:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-16 04:54:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:54:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-16 04:54:44,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-16 04:54:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-12-16 04:54:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-12-16 04:54:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-16 04:54:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-16 04:54:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:54:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure cit_read_reg [2021-12-16 04:54:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_read_reg [2021-12-16 04:54:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:54:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-16 04:54:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-16 04:54:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_packet_size [2021-12-16 04:54:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_packet_size [2021-12-16 04:54:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-16 04:54:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-16 04:54:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-16 04:54:44,831 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-16 04:54:44,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-16 04:54:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-16 04:54:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model4_Packet1 [2021-12-16 04:54:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model4_Packet1 [2021-12-16 04:54:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2021-12-16 04:54:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2021-12-16 04:54:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:54:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-12-16 04:54:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-12-16 04:54:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:54:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:54:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init [2021-12-16 04:54:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init [2021-12-16 04:54:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:54:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-12-16 04:54:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_6_2 [2021-12-16 04:54:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-16 04:54:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-16 04:54:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2021-12-16 04:54:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2021-12-16 04:54:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure cit_restart_stream [2021-12-16 04:54:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_restart_stream [2021-12-16 04:54:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:54:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2021-12-16 04:54:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2021-12-16 04:54:44,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-16 04:54:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-16 04:54:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:54:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 04:54:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 04:54:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:54:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-16 04:54:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-16 04:54:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure cit_write_reg [2021-12-16 04:54:44,835 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_write_reg [2021-12-16 04:54:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-16 04:54:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-16 04:54:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stopN [2021-12-16 04:54:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stopN [2021-12-16 04:54:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure sd_s_ctrl [2021-12-16 04:54:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_s_ctrl [2021-12-16 04:54:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_g_ctrl [2021-12-16 04:54:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_g_ctrl [2021-12-16 04:54:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-16 04:54:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-16 04:54:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure sd_stop0 [2021-12-16 04:54:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_stop0 [2021-12-16 04:54:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure cit_get_clock_div [2021-12-16 04:54:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_get_clock_div [2021-12-16 04:54:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure cit_model3_Packet1 [2021-12-16 04:54:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_model3_Packet1 [2021-12-16 04:54:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure cit_Packet_Format1 [2021-12-16 04:54:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_Packet_Format1 [2021-12-16 04:54:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure sd_init_controls [2021-12-16 04:54:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_init_controls [2021-12-16 04:54:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:54:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure cit_send_FF_04_02 [2021-12-16 04:54:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cit_send_FF_04_02 [2021-12-16 04:54:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-16 04:54:44,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-16 04:54:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:54:44,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:54:45,291 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:54:45,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:54:45,472 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:54:50,937 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-16 04:54:51,031 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:54:51,045 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:54:51,045 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 04:54:51,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:54:51 BoogieIcfgContainer [2021-12-16 04:54:51,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:54:51,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:54:51,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:54:51,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:54:51,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:54:42" (1/3) ... [2021-12-16 04:54:51,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387bb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:54:51, skipping insertion in model container [2021-12-16 04:54:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:54:44" (2/3) ... [2021-12-16 04:54:51,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5387bb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:54:51, skipping insertion in model container [2021-12-16 04:54:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:54:51" (3/3) ... [2021-12-16 04:54:51,055 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-media-usb-gspca-gspca_xirlink_cit.cil.i [2021-12-16 04:54:51,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:54:51,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 04:54:51,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:54:51,158 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 [2021-12-16 04:54:51,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 04:54:51,206 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) [2021-12-16 04:54:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 04:54:51,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:54:51,223 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] [2021-12-16 04:54:51,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:54:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:54:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -755739248, now seen corresponding path program 1 times [2021-12-16 04:54:51,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:54:51,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847329577] [2021-12-16 04:54:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:54:51,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:54:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:54:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:54:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:54:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:54:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 04:54:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:54:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:54:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 04:54:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:54:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:54:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 04:54:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:54:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-16 04:54:51,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:54:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847329577] [2021-12-16 04:54:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847329577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:54:51,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:54:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:54:51,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237476075] [2021-12-16 04:54:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:54:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:54:51,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:54:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:54:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:54:52,021 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) [2021-12-16 04:55:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:55:03,135 INFO L93 Difference]: Finished difference Result 10035 states and 15555 transitions. [2021-12-16 04:55:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:55:03,137 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 [2021-12-16 04:55:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:55:03,214 INFO L225 Difference]: With dead ends: 10035 [2021-12-16 04:55:03,214 INFO L226 Difference]: Without dead ends: 7320 [2021-12-16 04:55:03,248 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 [2021-12-16 04:55:03,252 INFO L933 BasicCegarLoop]: 4881 mSDtfsCounter, 4875 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 5702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 9858 SdHoareTripleChecker+Invalid, 10451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5702 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-16 04:55:03,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 9858 Invalid, 10451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5702 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-12-16 04:55:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2021-12-16 04:55:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 5272. [2021-12-16 04:55:04,381 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) [2021-12-16 04:55:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 8112 transitions. [2021-12-16 04:55:04,432 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 8112 transitions. Word has length 117 [2021-12-16 04:55:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:55:04,434 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 8112 transitions. [2021-12-16 04:55:04,434 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) [2021-12-16 04:55:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 8112 transitions. [2021-12-16 04:55:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-16 04:55:04,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:55:04,447 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] [2021-12-16 04:55:04,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:55:04,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:55:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:55:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 201776202, now seen corresponding path program 1 times [2021-12-16 04:55:04,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:55:04,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811503579] [2021-12-16 04:55:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:55:04,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:55:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:55:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:55:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:55:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:55:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 04:55:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:55:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:55:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 04:55:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:55:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:55:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:55:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 04:55:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 04:55:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:55:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 04:55:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 04:55:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:55:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 04:55:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-12-16 04:55:04,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:55:04,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811503579] [2021-12-16 04:55:04,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811503579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:55:04,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:55:04,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:55:04,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588147270] [2021-12-16 04:55:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:55:04,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:55:04,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:55:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:55:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:55:04,965 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) [2021-12-16 04:55:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:55:15,929 INFO L93 Difference]: Finished difference Result 19591 states and 30348 transitions. [2021-12-16 04:55:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:55:15,930 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 [2021-12-16 04:55:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:55:16,028 INFO L225 Difference]: With dead ends: 19591 [2021-12-16 04:55:16,028 INFO L226 Difference]: Without dead ends: 14340 [2021-12-16 04:55:16,067 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 [2021-12-16 04:55:16,068 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4705 mSDsluCounter, 4942 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 5661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 9820 SdHoareTripleChecker+Invalid, 10411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5661 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:55:16,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6391 Valid, 9820 Invalid, 10411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5661 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-12-16 04:55:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14340 states. [2021-12-16 04:55:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 10247. [2021-12-16 04:55:18,374 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) [2021-12-16 04:55:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 15797 transitions. [2021-12-16 04:55:18,428 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 15797 transitions. Word has length 185 [2021-12-16 04:55:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:55:18,429 INFO L470 AbstractCegarLoop]: Abstraction has 10247 states and 15797 transitions. [2021-12-16 04:55:18,430 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) [2021-12-16 04:55:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 15797 transitions. [2021-12-16 04:55:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-16 04:55:18,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:55:18,439 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] [2021-12-16 04:55:18,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:55:18,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:55:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:55:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1255827173, now seen corresponding path program 1 times [2021-12-16 04:55:18,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:55:18,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294967013] [2021-12-16 04:55:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:55:18,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:55:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:55:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:55:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:55:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:55:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 04:55:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:55:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:55:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 04:55:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:55:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 04:55:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 04:55:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 04:55:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 04:55:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:55:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:55:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-16 04:55:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-16 04:55:18,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:55:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294967013] [2021-12-16 04:55:18,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294967013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:55:18,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:55:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:55:18,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633017821] [2021-12-16 04:55:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:55:18,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:55:18,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:55:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:55:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:55:18,899 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) [2021-12-16 04:55:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:55:28,089 INFO L93 Difference]: Finished difference Result 26615 states and 41243 transitions. [2021-12-16 04:55:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:55:28,089 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 176 [2021-12-16 04:55:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:55:28,268 INFO L225 Difference]: With dead ends: 26615 [2021-12-16 04:55:28,268 INFO L226 Difference]: Without dead ends: 21414 [2021-12-16 04:55:28,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:55:28,300 INFO L933 BasicCegarLoop]: 7977 mSDtfsCounter, 3855 mSDsluCounter, 6104 mSDsCounter, 0 mSdLazyCounter, 4754 mSolverCounterSat, 4132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 14081 SdHoareTripleChecker+Invalid, 8886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4132 IncrementalHoareTripleChecker+Valid, 4754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:55:28,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5536 Valid, 14081 Invalid, 8886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4132 Valid, 4754 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-12-16 04:55:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21414 states. [2021-12-16 04:55:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21414 to 15289. [2021-12-16 04:55:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15289 states, 8073 states have (on average 1.1980676328502415) internal successors, (9672), 8169 states have internal predecessors, (9672), 6956 states have call successors, (6956), 259 states have call predecessors, (6956), 258 states have return successors, (6953), 6902 states have call predecessors, (6953), 6953 states have call successors, (6953) [2021-12-16 04:55:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15289 states to 15289 states and 23581 transitions. [2021-12-16 04:55:32,030 INFO L78 Accepts]: Start accepts. Automaton has 15289 states and 23581 transitions. Word has length 176 [2021-12-16 04:55:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:55:32,032 INFO L470 AbstractCegarLoop]: Abstraction has 15289 states and 23581 transitions. [2021-12-16 04:55:32,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-16 04:55:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 15289 states and 23581 transitions. [2021-12-16 04:55:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-16 04:55:32,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:55:32,041 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] [2021-12-16 04:55:32,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:55:32,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:55:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:55:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1317866787, now seen corresponding path program 1 times [2021-12-16 04:55:32,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:55:32,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026158877] [2021-12-16 04:55:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:55:32,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:55:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:55:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:55:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 04:55:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 04:55:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 04:55:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:55:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 04:55:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 04:55:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:55:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 04:55:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 04:55:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 04:55:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 04:55:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:55:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 04:55:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 04:55:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-16 04:55:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:55:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-12-16 04:55:32,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:55:32,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026158877] [2021-12-16 04:55:32,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026158877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:55:32,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:55:32,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:55:32,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33092044] [2021-12-16 04:55:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:55:32,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:55:32,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:55:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:55:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:55:32,459 INFO L87 Difference]: Start difference. First operand 15289 states and 23581 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)