./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.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-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 924a6955b6ce3440b57760793c2baba08166e0c083aedead61a1cd1c863c6081 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:51:09,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:51:09,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:51:09,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:51:09,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:51:09,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:51:09,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:51:09,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:51:09,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:51:09,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:51:09,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:51:09,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:51:09,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:51:09,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:51:09,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:51:09,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:51:09,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:51:09,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:51:09,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:51:09,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:51:09,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:51:09,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:51:09,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:51:09,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:51:09,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:51:09,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:51:09,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:51:09,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:51:09,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:51:09,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:51:09,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:51:09,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:51:09,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:51:09,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:51:09,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:51:09,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:51:09,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:51:09,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:51:09,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:51:09,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:51:09,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:51:09,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:51:09,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:51:09,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:51:09,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:51:09,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:51:09,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:51:09,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:51:09,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:51:09,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:51:09,943 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:51:09,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:51:09,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:51:09,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:51:09,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:51:09,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:51:09,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:51:09,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:51:09,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:51:09,954 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:51:09,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:51:09,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:51:09,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 924a6955b6ce3440b57760793c2baba08166e0c083aedead61a1cd1c863c6081 [2021-12-28 03:51:10,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:51:10,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:51:10,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:51:10,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:51:10,238 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:51:10,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i [2021-12-28 03:51:10,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94fc46fe/05ed89b1a7674835aef21c556d58f79e/FLAGe721d5625 [2021-12-28 03:51:11,018 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:51:11,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i [2021-12-28 03:51:11,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94fc46fe/05ed89b1a7674835aef21c556d58f79e/FLAGe721d5625 [2021-12-28 03:51:11,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94fc46fe/05ed89b1a7674835aef21c556d58f79e [2021-12-28 03:51:11,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:51:11,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:51:11,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:51:11,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:51:11,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:51:11,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:51:11" (1/1) ... [2021-12-28 03:51:11,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fc85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:11, skipping insertion in model container [2021-12-28 03:51:11,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:51:11" (1/1) ... [2021-12-28 03:51:11,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:51:11,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:51:12,901 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-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i[393849,393862] [2021-12-28 03:51:13,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:51:13,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:51:13,370 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-consumption/32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i[393849,393862] [2021-12-28 03:51:13,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:51:13,615 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:51:13,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13 WrapperNode [2021-12-28 03:51:13,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:51:13,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:51:13,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:51:13,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:51:13,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,862 INFO L137 Inliner]: procedures = 231, calls = 4052, calls flagged for inlining = 65, calls inlined = 61, statements flattened = 5991 [2021-12-28 03:51:13,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:51:13,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:51:13,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:51:13,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:51:13,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:13,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:14,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:14,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:51:14,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:51:14,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:51:14,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:51:14,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (1/1) ... [2021-12-28 03:51:14,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:51:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:51:14,133 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 03:51:14,143 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 03:51:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-28 03:51:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-28 03:51:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_read_reg [2021-12-28 03:51:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_read_reg [2021-12-28 03:51:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury [2021-12-28 03:51:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 03:51:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc [2021-12-28 03:51:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-28 03:51:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-28 03:51:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:51:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:51:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury [2021-12-28 03:51:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury [2021-12-28 03:51:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2160_frontend_attach [2021-12-28 03:51:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2160_frontend_attach [2021-12-28 03:51:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_stop [2021-12-28 03:51:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_stop [2021-12-28 03:51:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:51:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:51:14,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:51:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:51:14,180 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_config_pin_mux_modes [2021-12-28 03:51:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_config_pin_mux_modes [2021-12-28 03:51:14,180 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_start [2021-12-28 03:51:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_start [2021-12-28 03:51:14,180 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-28 03:51:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-28 03:51:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_isoc [2021-12-28 03:51:14,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_isoc [2021-12-28 03:51:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mh [2021-12-28 03:51:14,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mh [2021-12-28 03:51:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc [2021-12-28 03:51:14,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc [2021-12-28 03:51:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep6_streaming_ctrl [2021-12-28 03:51:14,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep6_streaming_ctrl [2021-12-28 03:51:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg_mask [2021-12-28 03:51:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg_mask [2021-12-28 03:51:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_soft_reset [2021-12-28 03:51:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_soft_reset [2021-12-28 03:51:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:51:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_bulk [2021-12-28 03:51:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_bulk [2021-12-28 03:51:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-28 03:51:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-28 03:51:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-28 03:51:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-28 03:51:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-28 03:51:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-28 03:51:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init [2021-12-28 03:51:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init [2021-12-28 03:51:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-28 03:51:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-28 03:51:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:51:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-28 03:51:14,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-28 03:51:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_tuner_demod [2021-12-28 03:51:14,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_tuner_demod [2021-12-28 03:51:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_dvbt [2021-12-28 03:51:14,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_dvbt [2021-12-28 03:51:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:51:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-28 03:51:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-28 03:51:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:51:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-28 03:51:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-28 03:51:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_check_status [2021-12-28 03:51:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_check_status [2021-12-28 03:51:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep5_streaming_ctrl [2021-12-28 03:51:14,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep5_streaming_ctrl [2021-12-28 03:51:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:51:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_msg [2021-12-28 03:51:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_msg [2021-12-28 03:51:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:51:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_dvbt [2021-12-28 03:51:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_dvbt [2021-12-28 03:51:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mh [2021-12-28 03:51:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mh [2021-12-28 03:51:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep4_streaming_ctrl [2021-12-28 03:51:14,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep4_streaming_ctrl [2021-12-28 03:51:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:51:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_gpio [2021-12-28 03:51:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_gpio [2021-12-28 03:51:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 03:51:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 03:51:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-28 03:51:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-28 03:51:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-28 03:51:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-28 03:51:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:51:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_get_chip_info [2021-12-28 03:51:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_get_chip_info [2021-12-28 03:51:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-28 03:51:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-28 03:51:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-28 03:51:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-28 03:51:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_enable_usb_output [2021-12-28 03:51:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_enable_usb_output [2021-12-28 03:51:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-28 03:51:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-28 03:51:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_tuner [2021-12-28 03:51:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_tuner [2021-12-28 03:51:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:51:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:51:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_hw_set_gpio [2021-12-28 03:51:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_hw_set_gpio [2021-12-28 03:51:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-28 03:51:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_set_device_mode [2021-12-28 03:51:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_set_device_mode [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_program_regs [2021-12-28 03:51:14,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_program_regs [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-28 03:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-28 03:51:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_gpio_mode_switch [2021-12-28 03:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_gpio_mode_switch [2021-12-28 03:51:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-28 03:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-28 03:51:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury [2021-12-28 03:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury [2021-12-28 03:51:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg [2021-12-28 03:51:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg [2021-12-28 03:51:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ant_hunt [2021-12-28 03:51:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ant_hunt [2021-12-28 03:51:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_ant_path [2021-12-28 03:51:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_ant_path [2021-12-28 03:51:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_port_expander [2021-12-28 03:51:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_port_expander [2021-12-28 03:51:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_disconnect [2021-12-28 03:51:14,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_disconnect [2021-12-28 03:51:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-28 03:51:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-28 03:51:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_demod [2021-12-28 03:51:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_demod [2021-12-28 03:51:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:51:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:51:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_send_data [2021-12-28 03:51:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_send_data [2021-12-28 03:51:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_resume [2021-12-28 03:51:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_resume [2021-12-28 03:51:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:51:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_get_data [2021-12-28 03:51:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_get_data [2021-12-28 03:51:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:51:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:51:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_probe [2021-12-28 03:51:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_probe [2021-12-28 03:51:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_top_master_ctrl [2021-12-28 03:51:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_top_master_ctrl [2021-12-28 03:51:14,795 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:51:14,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:51:28,666 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:51:28,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:51:28,694 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:51:28,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:51:28 BoogieIcfgContainer [2021-12-28 03:51:28,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:51:28,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:51:28,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:51:28,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:51:28,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:51:11" (1/3) ... [2021-12-28 03:51:28,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d5f263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:51:28, skipping insertion in model container [2021-12-28 03:51:28,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:51:13" (2/3) ... [2021-12-28 03:51:28,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d5f263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:51:28, skipping insertion in model container [2021-12-28 03:51:28,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:51:28" (3/3) ... [2021-12-28 03:51:28,703 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_newdeg_linux-3.8-rc1-drivers--media--usb--dvb-usb-v2--dvb-usb-mxl111sf.ko-main.cil.out.i [2021-12-28 03:51:28,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:51:28,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:51:28,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:51:28,767 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 03:51:28,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:51:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 2154 states, 1651 states have (on average 1.4996971532404604) internal successors, (2476), 1688 states have internal predecessors, (2476), 431 states have call successors, (431), 70 states have call predecessors, (431), 70 states have return successors, (431), 411 states have call predecessors, (431), 431 states have call successors, (431) [2021-12-28 03:51:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:51:28,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:28,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:28,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 849558357, now seen corresponding path program 1 times [2021-12-28 03:51:28,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:28,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574927019] [2021-12-28 03:51:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:28,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:29,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:29,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574927019] [2021-12-28 03:51:29,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574927019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:29,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:29,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:29,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768776109] [2021-12-28 03:51:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:29,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:29,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:29,480 INFO L87 Difference]: Start difference. First operand has 2154 states, 1651 states have (on average 1.4996971532404604) internal successors, (2476), 1688 states have internal predecessors, (2476), 431 states have call successors, (431), 70 states have call predecessors, (431), 70 states have return successors, (431), 411 states have call predecessors, (431), 431 states have call successors, (431) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:29,782 INFO L93 Difference]: Finished difference Result 6429 states and 9972 transitions. [2021-12-28 03:51:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-28 03:51:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:29,817 INFO L225 Difference]: With dead ends: 6429 [2021-12-28 03:51:29,817 INFO L226 Difference]: Without dead ends: 4274 [2021-12-28 03:51:29,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:29,838 INFO L933 BasicCegarLoop]: 3750 mSDtfsCounter, 3287 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 7063 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:29,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3287 Valid, 7063 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2021-12-28 03:51:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4270. [2021-12-28 03:51:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 3276 states have (on average 1.4996947496947497) internal successors, (4913), 3340 states have internal predecessors, (4913), 855 states have call successors, (855), 139 states have call predecessors, (855), 138 states have return successors, (848), 808 states have call predecessors, (848), 848 states have call successors, (848) [2021-12-28 03:51:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6616 transitions. [2021-12-28 03:51:30,060 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6616 transitions. Word has length 23 [2021-12-28 03:51:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:30,061 INFO L470 AbstractCegarLoop]: Abstraction has 4270 states and 6616 transitions. [2021-12-28 03:51:30,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6616 transitions. [2021-12-28 03:51:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:51:30,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:30,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:30,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:51:30,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1524189522, now seen corresponding path program 1 times [2021-12-28 03:51:30,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:30,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587359584] [2021-12-28 03:51:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:30,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:51:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:30,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:30,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587359584] [2021-12-28 03:51:30,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587359584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:30,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:30,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:51:30,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555273213] [2021-12-28 03:51:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:30,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:51:30,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:51:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:51:30,437 INFO L87 Difference]: Start difference. First operand 4270 states and 6616 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:51:33,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:36,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:38,901 INFO L93 Difference]: Finished difference Result 12252 states and 19168 transitions. [2021-12-28 03:51:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:51:38,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 03:51:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:38,951 INFO L225 Difference]: With dead ends: 12252 [2021-12-28 03:51:38,951 INFO L226 Difference]: Without dead ends: 7985 [2021-12-28 03:51:38,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:51:38,977 INFO L933 BasicCegarLoop]: 4217 mSDtfsCounter, 2837 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 846 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 10575 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:38,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 10575 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 715 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-12-28 03:51:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2021-12-28 03:51:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7723. [2021-12-28 03:51:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 5883 states have (on average 1.5021247662757096) internal successors, (8837), 6005 states have internal predecessors, (8837), 1579 states have call successors, (1579), 261 states have call predecessors, (1579), 260 states have return successors, (1572), 1492 states have call predecessors, (1572), 1572 states have call successors, (1572) [2021-12-28 03:51:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 11988 transitions. [2021-12-28 03:51:39,342 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 11988 transitions. Word has length 25 [2021-12-28 03:51:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:39,342 INFO L470 AbstractCegarLoop]: Abstraction has 7723 states and 11988 transitions. [2021-12-28 03:51:39,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:51:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 11988 transitions. [2021-12-28 03:51:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:51:39,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:39,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:39,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:51:39,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1994609882, now seen corresponding path program 1 times [2021-12-28 03:51:39,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:39,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129398476] [2021-12-28 03:51:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:39,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:39,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:39,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129398476] [2021-12-28 03:51:39,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129398476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:39,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:39,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:39,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118973539] [2021-12-28 03:51:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:39,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:39,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:39,661 INFO L87 Difference]: Start difference. First operand 7723 states and 11988 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:39,835 INFO L93 Difference]: Finished difference Result 7725 states and 11989 transitions. [2021-12-28 03:51:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-28 03:51:39,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:39,873 INFO L225 Difference]: With dead ends: 7725 [2021-12-28 03:51:39,874 INFO L226 Difference]: Without dead ends: 7722 [2021-12-28 03:51:39,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:39,882 INFO L933 BasicCegarLoop]: 3322 mSDtfsCounter, 3301 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:39,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 3322 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2021-12-28 03:51:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7722. [2021-12-28 03:51:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 5883 states have (on average 1.501954784973653) internal successors, (8836), 6004 states have internal predecessors, (8836), 1578 states have call successors, (1578), 261 states have call predecessors, (1578), 260 states have return successors, (1572), 1492 states have call predecessors, (1572), 1572 states have call successors, (1572) [2021-12-28 03:51:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11986 transitions. [2021-12-28 03:51:40,164 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11986 transitions. Word has length 25 [2021-12-28 03:51:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:40,164 INFO L470 AbstractCegarLoop]: Abstraction has 7722 states and 11986 transitions. [2021-12-28 03:51:40,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11986 transitions. [2021-12-28 03:51:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 03:51:40,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:40,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:40,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:51:40,168 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:40,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1704258658, now seen corresponding path program 1 times [2021-12-28 03:51:40,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229553365] [2021-12-28 03:51:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:40,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:40,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229553365] [2021-12-28 03:51:40,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229553365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:40,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:40,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:40,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819912929] [2021-12-28 03:51:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:40,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:40,427 INFO L87 Difference]: Start difference. First operand 7722 states and 11986 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:40,601 INFO L93 Difference]: Finished difference Result 7724 states and 11987 transitions. [2021-12-28 03:51:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-28 03:51:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:40,651 INFO L225 Difference]: With dead ends: 7724 [2021-12-28 03:51:40,652 INFO L226 Difference]: Without dead ends: 7721 [2021-12-28 03:51:40,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:40,664 INFO L933 BasicCegarLoop]: 3320 mSDtfsCounter, 3298 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:40,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3298 Valid, 3320 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-12-28 03:51:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7721. [2021-12-28 03:51:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7721 states, 5883 states have (on average 1.5017848036715962) internal successors, (8835), 6003 states have internal predecessors, (8835), 1577 states have call successors, (1577), 261 states have call predecessors, (1577), 260 states have return successors, (1572), 1492 states have call predecessors, (1572), 1572 states have call successors, (1572) [2021-12-28 03:51:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7721 states to 7721 states and 11984 transitions. [2021-12-28 03:51:40,887 INFO L78 Accepts]: Start accepts. Automaton has 7721 states and 11984 transitions. Word has length 26 [2021-12-28 03:51:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:40,888 INFO L470 AbstractCegarLoop]: Abstraction has 7721 states and 11984 transitions. [2021-12-28 03:51:40,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7721 states and 11984 transitions. [2021-12-28 03:51:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 03:51:40,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:40,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:40,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:51:40,894 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1293300439, now seen corresponding path program 1 times [2021-12-28 03:51:40,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909919812] [2021-12-28 03:51:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:40,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:41,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:41,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909919812] [2021-12-28 03:51:41,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909919812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:41,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:41,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:41,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498716019] [2021-12-28 03:51:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:41,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:41,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:41,173 INFO L87 Difference]: Start difference. First operand 7721 states and 11984 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:41,535 INFO L93 Difference]: Finished difference Result 23129 states and 35913 transitions. [2021-12-28 03:51:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:41,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-28 03:51:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:41,610 INFO L225 Difference]: With dead ends: 23129 [2021-12-28 03:51:41,610 INFO L226 Difference]: Without dead ends: 15411 [2021-12-28 03:51:41,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:41,656 INFO L933 BasicCegarLoop]: 3741 mSDtfsCounter, 3290 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 7035 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:41,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 7035 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15411 states. [2021-12-28 03:51:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15411 to 15403. [2021-12-28 03:51:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15403 states, 11737 states have (on average 1.5020022152168357) internal successors, (17629), 11973 states have internal predecessors, (17629), 3147 states have call successors, (3147), 519 states have call predecessors, (3147), 518 states have return successors, (3142), 2982 states have call predecessors, (3142), 3142 states have call successors, (3142) [2021-12-28 03:51:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 23918 transitions. [2021-12-28 03:51:42,094 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 23918 transitions. Word has length 27 [2021-12-28 03:51:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:42,094 INFO L470 AbstractCegarLoop]: Abstraction has 15403 states and 23918 transitions. [2021-12-28 03:51:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 23918 transitions. [2021-12-28 03:51:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 03:51:42,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:42,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:42,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:51:42,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1438492671, now seen corresponding path program 1 times [2021-12-28 03:51:42,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:42,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816642801] [2021-12-28 03:51:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:42,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:42,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:42,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816642801] [2021-12-28 03:51:42,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816642801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:42,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:42,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:42,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495337739] [2021-12-28 03:51:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:42,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:42,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:42,377 INFO L87 Difference]: Start difference. First operand 15403 states and 23918 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:42,721 INFO L93 Difference]: Finished difference Result 15405 states and 23919 transitions. [2021-12-28 03:51:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-28 03:51:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:42,789 INFO L225 Difference]: With dead ends: 15405 [2021-12-28 03:51:42,789 INFO L226 Difference]: Without dead ends: 15402 [2021-12-28 03:51:42,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:42,802 INFO L933 BasicCegarLoop]: 3318 mSDtfsCounter, 3294 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:42,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3294 Valid, 3318 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15402 states. [2021-12-28 03:51:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15402 to 15402. [2021-12-28 03:51:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15402 states, 11737 states have (on average 1.5019170145693108) internal successors, (17628), 11972 states have internal predecessors, (17628), 3146 states have call successors, (3146), 519 states have call predecessors, (3146), 518 states have return successors, (3142), 2982 states have call predecessors, (3142), 3142 states have call successors, (3142) [2021-12-28 03:51:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15402 states to 15402 states and 23916 transitions. [2021-12-28 03:51:43,211 INFO L78 Accepts]: Start accepts. Automaton has 15402 states and 23916 transitions. Word has length 28 [2021-12-28 03:51:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 15402 states and 23916 transitions. [2021-12-28 03:51:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15402 states and 23916 transitions. [2021-12-28 03:51:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 03:51:43,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:43,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:51:43,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:51:43,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1644479700, now seen corresponding path program 1 times [2021-12-28 03:51:43,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:43,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112518490] [2021-12-28 03:51:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:43,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:51:43,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112518490] [2021-12-28 03:51:43,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112518490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:43,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:43,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:51:43,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297270803] [2021-12-28 03:51:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:43,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:51:43,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:51:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:43,485 INFO L87 Difference]: Start difference. First operand 15402 states and 23916 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:43,728 INFO L93 Difference]: Finished difference Result 15404 states and 23917 transitions. [2021-12-28 03:51:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:51:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-28 03:51:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:43,798 INFO L225 Difference]: With dead ends: 15404 [2021-12-28 03:51:43,799 INFO L226 Difference]: Without dead ends: 15392 [2021-12-28 03:51:43,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:51:43,813 INFO L933 BasicCegarLoop]: 3317 mSDtfsCounter, 3291 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:43,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3291 Valid, 3317 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:51:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2021-12-28 03:51:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 15392. [2021-12-28 03:51:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15392 states, 11728 states have (on average 1.5018758526603002) internal successors, (17614), 11962 states have internal predecessors, (17614), 3145 states have call successors, (3145), 519 states have call predecessors, (3145), 518 states have return successors, (3142), 2982 states have call predecessors, (3142), 3142 states have call successors, (3142) [2021-12-28 03:51:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 23901 transitions. [2021-12-28 03:51:44,360 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 23901 transitions. Word has length 29 [2021-12-28 03:51:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:44,361 INFO L470 AbstractCegarLoop]: Abstraction has 15392 states and 23901 transitions. [2021-12-28 03:51:44,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:51:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 23901 transitions. [2021-12-28 03:51:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 03:51:44,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:44,372 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:51:44,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:51:44,373 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -989383205, now seen corresponding path program 1 times [2021-12-28 03:51:44,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792680376] [2021-12-28 03:51:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:44,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:51:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:51:44,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792680376] [2021-12-28 03:51:44,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792680376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:44,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:44,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:51:44,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713069166] [2021-12-28 03:51:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:44,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:51:44,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:51:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:51:44,725 INFO L87 Difference]: Start difference. First operand 15392 states and 23901 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:51:49,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:51,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:51:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:51:55,779 INFO L93 Difference]: Finished difference Result 17853 states and 28333 transitions. [2021-12-28 03:51:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:51:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-28 03:51:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:51:55,846 INFO L225 Difference]: With dead ends: 17853 [2021-12-28 03:51:55,847 INFO L226 Difference]: Without dead ends: 17033 [2021-12-28 03:51:55,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:51:55,858 INFO L933 BasicCegarLoop]: 4054 mSDtfsCounter, 1942 mSDsluCounter, 13011 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 786 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 17065 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:51:55,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 17065 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 871 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-12-28 03:51:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17033 states. [2021-12-28 03:51:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17033 to 14669. [2021-12-28 03:51:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14669 states, 11135 states have (on average 1.5023798832510102) internal successors, (16729), 11369 states have internal predecessors, (16729), 3027 states have call successors, (3027), 507 states have call predecessors, (3027), 506 states have return successors, (3024), 2864 states have call predecessors, (3024), 3024 states have call successors, (3024) [2021-12-28 03:51:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14669 states to 14669 states and 22780 transitions. [2021-12-28 03:51:56,367 INFO L78 Accepts]: Start accepts. Automaton has 14669 states and 22780 transitions. Word has length 52 [2021-12-28 03:51:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:51:56,369 INFO L470 AbstractCegarLoop]: Abstraction has 14669 states and 22780 transitions. [2021-12-28 03:51:56,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:51:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 14669 states and 22780 transitions. [2021-12-28 03:51:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 03:51:56,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:51:56,380 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:51:56,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:51:56,380 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:51:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:51:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1669441575, now seen corresponding path program 1 times [2021-12-28 03:51:56,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:51:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765504199] [2021-12-28 03:51:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:51:56,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:51:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:51:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:51:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:51:56,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:51:56,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765504199] [2021-12-28 03:51:56,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765504199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:51:56,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:51:56,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:51:56,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052228092] [2021-12-28 03:51:56,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:51:56,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:51:56,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:51:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:51:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:51:56,698 INFO L87 Difference]: Start difference. First operand 14669 states and 22780 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:01,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:52:02,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:52:04,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:52:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:07,872 INFO L93 Difference]: Finished difference Result 29986 states and 46862 transitions. [2021-12-28 03:52:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:52:07,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-28 03:52:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:07,948 INFO L225 Difference]: With dead ends: 29986 [2021-12-28 03:52:07,949 INFO L226 Difference]: Without dead ends: 15320 [2021-12-28 03:52:08,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:52:08,122 INFO L933 BasicCegarLoop]: 5449 mSDtfsCounter, 3412 mSDsluCounter, 6758 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 12207 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:08,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3539 Valid, 12207 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 816 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-12-28 03:52:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15320 states. [2021-12-28 03:52:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15320 to 14813. [2021-12-28 03:52:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14813 states, 11250 states have (on average 1.5009777777777777) internal successors, (16886), 11484 states have internal predecessors, (16886), 3044 states have call successors, (3044), 519 states have call predecessors, (3044), 518 states have return successors, (3042), 2881 states have call predecessors, (3042), 3042 states have call successors, (3042) [2021-12-28 03:52:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 22972 transitions. [2021-12-28 03:52:08,527 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 22972 transitions. Word has length 52 [2021-12-28 03:52:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:08,528 INFO L470 AbstractCegarLoop]: Abstraction has 14813 states and 22972 transitions. [2021-12-28 03:52:08,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 22972 transitions. [2021-12-28 03:52:08,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 03:52:08,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:08,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2021-12-28 03:52:08,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:52:08,548 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:08,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash -328176558, now seen corresponding path program 1 times [2021-12-28 03:52:08,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:08,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971955676] [2021-12-28 03:52:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:08,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:52:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:52:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 03:52:08,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971955676] [2021-12-28 03:52:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971955676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:08,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:08,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:52:08,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696918228] [2021-12-28 03:52:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:52:08,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:52:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:52:08,889 INFO L87 Difference]: Start difference. First operand 14813 states and 22972 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)