./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 ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-ff03de6 [2021-12-21 16:06:34,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:06:34,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:06:34,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:06:34,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:06:34,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:06:34,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:06:34,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:06:34,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:06:34,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:06:34,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:06:34,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:06:34,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:06:34,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:06:34,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:06:34,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:06:34,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:06:34,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:06:34,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:06:34,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:06:34,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:06:34,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:06:34,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:06:34,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:06:34,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:06:34,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:06:34,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:06:34,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:06:34,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:06:34,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:06:34,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:06:34,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:06:34,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:06:34,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:06:34,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:06:34,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:06:34,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:06:34,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:06:34,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:06:34,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:06:34,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:06:34,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:06:34,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:06:34,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:06:34,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:06:34,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:06:34,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:06:34,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:06:34,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:06:34,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:06:34,142 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:06:34,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:06:34,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:06:34,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:06:34,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:06:34,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:06:34,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:06:34,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:06:34,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:06:34,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:06:34,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:06:34,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:06:34,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:06:34,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:06:34,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:06:34,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:06:34,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:06:34,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 924a6955b6ce3440b57760793c2baba08166e0c083aedead61a1cd1c863c6081 [2021-12-21 16:06:34,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:06:34,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:06:34,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:06:34,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:06:34,349 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:06:34,350 INFO L432 ainManager$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 [2021-12-21 16:06:34,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2fd4e34/4e1c24d5bede40f9b13d16a97fface7d/FLAGb31607779 [2021-12-21 16:06:34,973 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:06:34,974 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 [2021-12-21 16:06:35,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2fd4e34/4e1c24d5bede40f9b13d16a97fface7d/FLAGb31607779 [2021-12-21 16:06:35,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2fd4e34/4e1c24d5bede40f9b13d16a97fface7d [2021-12-21 16:06:35,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:06:35,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:06:35,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:06:35,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:06:35,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:06:35,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:35" (1/1) ... [2021-12-21 16:06:35,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c14111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:35, skipping insertion in model container [2021-12-21 16:06:35,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:35" (1/1) ... [2021-12-21 16:06:35,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:06:35,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:06:36,781 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] [2021-12-21 16:06:36,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:06:36,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:06:37,267 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] [2021-12-21 16:06:37,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:06:37,470 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:06:37,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37 WrapperNode [2021-12-21 16:06:37,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:06:37,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:06:37,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:06:37,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:06:37,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,743 INFO L137 Inliner]: procedures = 231, calls = 4052, calls flagged for inlining = 65, calls inlined = 61, statements flattened = 5991 [2021-12-21 16:06:37,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:06:37,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:06:37,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:06:37,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:06:37,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:06:37,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:06:37,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:06:37,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:06:37,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (1/1) ... [2021-12-21 16:06:37,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:06:37,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:06:38,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:06:38,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:06:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-21 16:06:38,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_read_reg [2021-12-21 16:06:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_read_reg [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury [2021-12-21 16:06:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 16:06:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:06:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc [2021-12-21 16:06:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc [2021-12-21 16:06:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-21 16:06:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-21 16:06:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:06:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:06:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury [2021-12-21 16:06:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury [2021-12-21 16:06:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2160_frontend_attach [2021-12-21 16:06:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2160_frontend_attach [2021-12-21 16:06:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_stop [2021-12-21 16:06:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_stop [2021-12-21 16:06:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:06:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:06:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:06:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:06:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_config_pin_mux_modes [2021-12-21 16:06:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_config_pin_mux_modes [2021-12-21 16:06:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_start [2021-12-21 16:06:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_start [2021-12-21 16:06:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-21 16:06:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-21 16:06:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_isoc [2021-12-21 16:06:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_isoc [2021-12-21 16:06:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mh [2021-12-21 16:06:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mh [2021-12-21 16:06:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc [2021-12-21 16:06:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc [2021-12-21 16:06:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep6_streaming_ctrl [2021-12-21 16:06:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep6_streaming_ctrl [2021-12-21 16:06:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg_mask [2021-12-21 16:06:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg_mask [2021-12-21 16:06:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_soft_reset [2021-12-21 16:06:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_soft_reset [2021-12-21 16:06:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:06:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_bulk [2021-12-21 16:06:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_bulk [2021-12-21 16:06:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-21 16:06:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-21 16:06:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-21 16:06:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-21 16:06:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-21 16:06:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-21 16:06:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init [2021-12-21 16:06:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init [2021-12-21 16:06:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-21 16:06:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-21 16:06:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:06:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-21 16:06:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-21 16:06:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_tuner_demod [2021-12-21 16:06:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_tuner_demod [2021-12-21 16:06:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_dvbt [2021-12-21 16:06:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_dvbt [2021-12-21 16:06:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:06:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-21 16:06:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-21 16:06:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:06:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-21 16:06:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-21 16:06:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_check_status [2021-12-21 16:06:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_check_status [2021-12-21 16:06:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep5_streaming_ctrl [2021-12-21 16:06:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep5_streaming_ctrl [2021-12-21 16:06:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:06:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_msg [2021-12-21 16:06:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_msg [2021-12-21 16:06:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:06:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_dvbt [2021-12-21 16:06:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_dvbt [2021-12-21 16:06:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mh [2021-12-21 16:06:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mh [2021-12-21 16:06:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep4_streaming_ctrl [2021-12-21 16:06:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep4_streaming_ctrl [2021-12-21 16:06:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:06:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_gpio [2021-12-21 16:06:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_gpio [2021-12-21 16:06:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-21 16:06:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-21 16:06:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-21 16:06:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-21 16:06:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-21 16:06:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-21 16:06:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:06:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_get_chip_info [2021-12-21 16:06:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_get_chip_info [2021-12-21 16:06:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-21 16:06:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-21 16:06:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-21 16:06:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-21 16:06:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_enable_usb_output [2021-12-21 16:06:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_enable_usb_output [2021-12-21 16:06:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-21 16:06:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-21 16:06:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_tuner [2021-12-21 16:06:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_tuner [2021-12-21 16:06:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:06:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:06:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_hw_set_gpio [2021-12-21 16:06:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_hw_set_gpio [2021-12-21 16:06:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:06:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-21 16:06:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-21 16:06:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:06:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_set_device_mode [2021-12-21 16:06:38,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_set_device_mode [2021-12-21 16:06:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_program_regs [2021-12-21 16:06:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_program_regs [2021-12-21 16:06:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:06:38,052 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-21 16:06:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-21 16:06:38,052 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_gpio_mode_switch [2021-12-21 16:06:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_gpio_mode_switch [2021-12-21 16:06:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-21 16:06:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-21 16:06:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury [2021-12-21 16:06:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury [2021-12-21 16:06:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg [2021-12-21 16:06:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg [2021-12-21 16:06:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ant_hunt [2021-12-21 16:06:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ant_hunt [2021-12-21 16:06:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_ant_path [2021-12-21 16:06:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_ant_path [2021-12-21 16:06:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_port_expander [2021-12-21 16:06:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_port_expander [2021-12-21 16:06:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_disconnect [2021-12-21 16:06:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_disconnect [2021-12-21 16:06:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-21 16:06:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-21 16:06:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_demod [2021-12-21 16:06:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_demod [2021-12-21 16:06:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:06:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:06:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_send_data [2021-12-21 16:06:38,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_send_data [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_resume [2021-12-21 16:06:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_resume [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_get_data [2021-12-21 16:06:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_get_data [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:06:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_probe [2021-12-21 16:06:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_probe [2021-12-21 16:06:38,060 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_top_master_ctrl [2021-12-21 16:06:38,060 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_top_master_ctrl [2021-12-21 16:06:38,772 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:06:38,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:06:54,137 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:06:54,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:06:54,153 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:06:54,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:54 BoogieIcfgContainer [2021-12-21 16:06:54,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:06:54,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:06:54,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:06:54,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:06:54,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:06:35" (1/3) ... [2021-12-21 16:06:54,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b014f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:54, skipping insertion in model container [2021-12-21 16:06:54,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:37" (2/3) ... [2021-12-21 16:06:54,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b014f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:54, skipping insertion in model container [2021-12-21 16:06:54,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:54" (3/3) ... [2021-12-21 16:06:54,162 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 [2021-12-21 16:06:54,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:06:54,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:06:54,233 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:06:54,248 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:06:54,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:06:54,298 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) [2021-12-21 16:06:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 16:06:54,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:54,315 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] [2021-12-21 16:06:54,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 849558357, now seen corresponding path program 1 times [2021-12-21 16:06:54,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191308043] [2021-12-21 16:06:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:54,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:54,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:54,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191308043] [2021-12-21 16:06:54,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191308043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:54,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:54,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:06:54,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487609052] [2021-12-21 16:06:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:54,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:06:54,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:06:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:55,018 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) [2021-12-21 16:06:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:55,396 INFO L93 Difference]: Finished difference Result 6429 states and 9972 transitions. [2021-12-21 16:06:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:06:55,399 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 [2021-12-21 16:06:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:55,442 INFO L225 Difference]: With dead ends: 6429 [2021-12-21 16:06:55,442 INFO L226 Difference]: Without dead ends: 4274 [2021-12-21 16:06:55,456 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 [2021-12-21 16:06:55,459 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 [2021-12-21 16:06:55,459 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] [2021-12-21 16:06:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2021-12-21 16:06:55,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4270. [2021-12-21 16:06:55,608 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) [2021-12-21 16:06:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6616 transitions. [2021-12-21 16:06:55,633 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6616 transitions. Word has length 23 [2021-12-21 16:06:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:55,633 INFO L470 AbstractCegarLoop]: Abstraction has 4270 states and 6616 transitions. [2021-12-21 16:06:55,634 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) [2021-12-21 16:06:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6616 transitions. [2021-12-21 16:06:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 16:06:55,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:55,637 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] [2021-12-21 16:06:55,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:06:55,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1524189522, now seen corresponding path program 1 times [2021-12-21 16:06:55,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:55,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495171412] [2021-12-21 16:06:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:55,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:06:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:56,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495171412] [2021-12-21 16:06:56,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495171412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:56,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:56,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:06:56,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281625356] [2021-12-21 16:06:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:56,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:06:56,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:06:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:06:56,010 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) [2021-12-21 16:07:00,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:02,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:05,436 INFO L93 Difference]: Finished difference Result 12252 states and 19168 transitions. [2021-12-21 16:07:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:05,440 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 [2021-12-21 16:07:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:05,485 INFO L225 Difference]: With dead ends: 12252 [2021-12-21 16:07:05,486 INFO L226 Difference]: Without dead ends: 7985 [2021-12-21 16:07:05,512 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 [2021-12-21 16:07:05,513 INFO L933 BasicCegarLoop]: 4219 mSDtfsCounter, 2837 mSDsluCounter, 6432 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 846 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 10651 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:05,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2963 Valid, 10651 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 640 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-12-21 16:07:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2021-12-21 16:07:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7723. [2021-12-21 16:07:05,838 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) [2021-12-21 16:07:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 11988 transitions. [2021-12-21 16:07:05,872 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 11988 transitions. Word has length 25 [2021-12-21 16:07:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:05,872 INFO L470 AbstractCegarLoop]: Abstraction has 7723 states and 11988 transitions. [2021-12-21 16:07:05,873 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) [2021-12-21 16:07:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 11988 transitions. [2021-12-21 16:07:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 16:07:05,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:05,876 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] [2021-12-21 16:07:05,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:07:05,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1994609882, now seen corresponding path program 1 times [2021-12-21 16:07:05,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:05,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349676446] [2021-12-21 16:07:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:05,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:06,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349676446] [2021-12-21 16:07:06,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349676446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:06,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:06,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:07:06,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712586079] [2021-12-21 16:07:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:06,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:07:06,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:07:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:07:06,177 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) [2021-12-21 16:07:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:06,345 INFO L93 Difference]: Finished difference Result 7725 states and 11989 transitions. [2021-12-21 16:07:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:07:06,346 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 [2021-12-21 16:07:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:06,385 INFO L225 Difference]: With dead ends: 7725 [2021-12-21 16:07:06,385 INFO L226 Difference]: Without dead ends: 7722 [2021-12-21 16:07:06,391 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 [2021-12-21 16:07:06,393 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 [2021-12-21 16:07:06,394 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] [2021-12-21 16:07:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2021-12-21 16:07:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7722. [2021-12-21 16:07:06,595 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) [2021-12-21 16:07:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11986 transitions. [2021-12-21 16:07:06,624 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11986 transitions. Word has length 25 [2021-12-21 16:07:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:06,624 INFO L470 AbstractCegarLoop]: Abstraction has 7722 states and 11986 transitions. [2021-12-21 16:07:06,625 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) [2021-12-21 16:07:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11986 transitions. [2021-12-21 16:07:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-21 16:07:06,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:06,629 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] [2021-12-21 16:07:06,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:07:06,630 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1704258658, now seen corresponding path program 1 times [2021-12-21 16:07:06,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:06,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555909715] [2021-12-21 16:07:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:06,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:06,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:06,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555909715] [2021-12-21 16:07:06,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555909715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:06,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:06,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:07:06,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512522999] [2021-12-21 16:07:06,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:06,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:07:06,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:07:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:07:06,980 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) [2021-12-21 16:07:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:07,148 INFO L93 Difference]: Finished difference Result 7724 states and 11987 transitions. [2021-12-21 16:07:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:07:07,148 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 [2021-12-21 16:07:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:07,197 INFO L225 Difference]: With dead ends: 7724 [2021-12-21 16:07:07,198 INFO L226 Difference]: Without dead ends: 7721 [2021-12-21 16:07:07,204 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 [2021-12-21 16:07:07,210 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 [2021-12-21 16:07:07,211 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] [2021-12-21 16:07:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-12-21 16:07:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7721. [2021-12-21 16:07:07,410 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) [2021-12-21 16:07:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7721 states to 7721 states and 11984 transitions. [2021-12-21 16:07:07,435 INFO L78 Accepts]: Start accepts. Automaton has 7721 states and 11984 transitions. Word has length 26 [2021-12-21 16:07:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:07,435 INFO L470 AbstractCegarLoop]: Abstraction has 7721 states and 11984 transitions. [2021-12-21 16:07:07,435 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) [2021-12-21 16:07:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7721 states and 11984 transitions. [2021-12-21 16:07:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 16:07:07,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:07,439 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] [2021-12-21 16:07:07,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:07:07,439 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:07,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1293300439, now seen corresponding path program 1 times [2021-12-21 16:07:07,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:07,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024314092] [2021-12-21 16:07:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:07,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:07,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:07,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024314092] [2021-12-21 16:07:07,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024314092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:07,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:07,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:07:07,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502158102] [2021-12-21 16:07:07,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:07,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:07:07,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:07:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:07:07,719 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) [2021-12-21 16:07:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:08,076 INFO L93 Difference]: Finished difference Result 23129 states and 35913 transitions. [2021-12-21 16:07:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:07:08,077 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 [2021-12-21 16:07:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:08,141 INFO L225 Difference]: With dead ends: 23129 [2021-12-21 16:07:08,141 INFO L226 Difference]: Without dead ends: 15411 [2021-12-21 16:07:08,179 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 [2021-12-21 16:07:08,180 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 [2021-12-21 16:07:08,180 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] [2021-12-21 16:07:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15411 states. [2021-12-21 16:07:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15411 to 15403. [2021-12-21 16:07:08,529 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) [2021-12-21 16:07:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 23918 transitions. [2021-12-21 16:07:08,734 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 23918 transitions. Word has length 27 [2021-12-21 16:07:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:08,734 INFO L470 AbstractCegarLoop]: Abstraction has 15403 states and 23918 transitions. [2021-12-21 16:07:08,734 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) [2021-12-21 16:07:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 23918 transitions. [2021-12-21 16:07:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 16:07:08,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:08,742 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] [2021-12-21 16:07:08,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:07:08,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1438492671, now seen corresponding path program 1 times [2021-12-21 16:07:08,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:08,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470320328] [2021-12-21 16:07:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:08,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:09,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:09,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470320328] [2021-12-21 16:07:09,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470320328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:09,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:09,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:07:09,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273680262] [2021-12-21 16:07:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:09,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:07:09,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:07:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:07:09,137 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) [2021-12-21 16:07:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:09,388 INFO L93 Difference]: Finished difference Result 15405 states and 23919 transitions. [2021-12-21 16:07:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:07:09,389 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 [2021-12-21 16:07:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:09,453 INFO L225 Difference]: With dead ends: 15405 [2021-12-21 16:07:09,454 INFO L226 Difference]: Without dead ends: 15402 [2021-12-21 16:07:09,467 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 [2021-12-21 16:07:09,468 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 [2021-12-21 16:07:09,468 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] [2021-12-21 16:07:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15402 states. [2021-12-21 16:07:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15402 to 15402. [2021-12-21 16:07:09,840 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) [2021-12-21 16:07:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15402 states to 15402 states and 23916 transitions. [2021-12-21 16:07:09,896 INFO L78 Accepts]: Start accepts. Automaton has 15402 states and 23916 transitions. Word has length 28 [2021-12-21 16:07:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:09,897 INFO L470 AbstractCegarLoop]: Abstraction has 15402 states and 23916 transitions. [2021-12-21 16:07:09,897 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) [2021-12-21 16:07:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15402 states and 23916 transitions. [2021-12-21 16:07:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 16:07:09,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:09,901 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] [2021-12-21 16:07:09,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:07:09,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1644479700, now seen corresponding path program 1 times [2021-12-21 16:07:09,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:09,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775926729] [2021-12-21 16:07:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:09,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:10,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:10,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775926729] [2021-12-21 16:07:10,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775926729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:10,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:10,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:07:10,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245388804] [2021-12-21 16:07:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:10,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:07:10,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:07:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:07:10,146 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) [2021-12-21 16:07:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:10,438 INFO L93 Difference]: Finished difference Result 15404 states and 23917 transitions. [2021-12-21 16:07:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:07:10,447 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 [2021-12-21 16:07:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:10,514 INFO L225 Difference]: With dead ends: 15404 [2021-12-21 16:07:10,514 INFO L226 Difference]: Without dead ends: 15392 [2021-12-21 16:07:10,527 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 [2021-12-21 16:07:10,529 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 [2021-12-21 16:07:10,529 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] [2021-12-21 16:07:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2021-12-21 16:07:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 15392. [2021-12-21 16:07:10,958 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) [2021-12-21 16:07:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 23901 transitions. [2021-12-21 16:07:11,024 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 23901 transitions. Word has length 29 [2021-12-21 16:07:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:11,025 INFO L470 AbstractCegarLoop]: Abstraction has 15392 states and 23901 transitions. [2021-12-21 16:07:11,025 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) [2021-12-21 16:07:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 23901 transitions. [2021-12-21 16:07:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 16:07:11,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:11,036 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] [2021-12-21 16:07:11,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:07:11,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -989383205, now seen corresponding path program 1 times [2021-12-21 16:07:11,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:11,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862714677] [2021-12-21 16:07:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:11,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:11,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:07:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 16:07:11,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:11,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862714677] [2021-12-21 16:07:11,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862714677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:11,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:11,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:07:11,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841300012] [2021-12-21 16:07:11,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:11,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:07:11,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:07:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:07:11,389 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) [2021-12-21 16:07:16,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:18,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:20,848 INFO L93 Difference]: Finished difference Result 17853 states and 28333 transitions. [2021-12-21 16:07:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:07:20,848 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 [2021-12-21 16:07:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:20,919 INFO L225 Difference]: With dead ends: 17853 [2021-12-21 16:07:20,919 INFO L226 Difference]: Without dead ends: 17033 [2021-12-21 16:07:20,933 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 [2021-12-21 16:07:20,934 INFO L933 BasicCegarLoop]: 4052 mSDtfsCounter, 1942 mSDsluCounter, 13225 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 786 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:20,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 17277 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-12-21 16:07:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17033 states. [2021-12-21 16:07:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17033 to 14669. [2021-12-21 16:07:21,384 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) [2021-12-21 16:07:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14669 states to 14669 states and 22780 transitions. [2021-12-21 16:07:21,433 INFO L78 Accepts]: Start accepts. Automaton has 14669 states and 22780 transitions. Word has length 52 [2021-12-21 16:07:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:21,435 INFO L470 AbstractCegarLoop]: Abstraction has 14669 states and 22780 transitions. [2021-12-21 16:07:21,435 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) [2021-12-21 16:07:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 14669 states and 22780 transitions. [2021-12-21 16:07:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 16:07:21,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:21,445 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] [2021-12-21 16:07:21,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:07:21,446 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1669441575, now seen corresponding path program 1 times [2021-12-21 16:07:21,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:21,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250102020] [2021-12-21 16:07:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:21,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:07:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 16:07:21,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250102020] [2021-12-21 16:07:21,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250102020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:21,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:21,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:21,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070340300] [2021-12-21 16:07:21,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:21,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:21,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:21,717 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) [2021-12-21 16:07:26,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:28,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:31,502 INFO L93 Difference]: Finished difference Result 29986 states and 46862 transitions. [2021-12-21 16:07:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:31,502 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 [2021-12-21 16:07:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:31,574 INFO L225 Difference]: With dead ends: 29986 [2021-12-21 16:07:31,575 INFO L226 Difference]: Without dead ends: 15320 [2021-12-21 16:07:31,635 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 [2021-12-21 16:07:31,636 INFO L933 BasicCegarLoop]: 5458 mSDtfsCounter, 3412 mSDsluCounter, 6841 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 647 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 12299 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:31,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3530 Valid, 12299 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 740 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-12-21 16:07:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15320 states. [2021-12-21 16:07:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15320 to 14813. [2021-12-21 16:07:32,173 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) [2021-12-21 16:07:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 22972 transitions. [2021-12-21 16:07:32,238 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 22972 transitions. Word has length 52 [2021-12-21 16:07:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:32,239 INFO L470 AbstractCegarLoop]: Abstraction has 14813 states and 22972 transitions. [2021-12-21 16:07:32,239 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) [2021-12-21 16:07:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 22972 transitions. [2021-12-21 16:07:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 16:07:32,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:32,260 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] [2021-12-21 16:07:32,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:07:32,261 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -328176558, now seen corresponding path program 1 times [2021-12-21 16:07:32,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224790562] [2021-12-21 16:07:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:32,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:07:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:07:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 16:07:32,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:32,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224790562] [2021-12-21 16:07:32,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224790562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:32,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:32,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:07:32,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111805739] [2021-12-21 16:07:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:32,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:07:32,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:32,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:07:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:07:32,645 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)