./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 e19ca921 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-e19ca92 [2021-12-22 14:32:59,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:32:59,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:32:59,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:32:59,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:32:59,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:32:59,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:32:59,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:32:59,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:32:59,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:32:59,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:32:59,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:32:59,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:32:59,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:32:59,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:32:59,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:32:59,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:32:59,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:32:59,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:32:59,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:32:59,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:32:59,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:32:59,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:32:59,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:32:59,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:32:59,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:32:59,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:32:59,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:32:59,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:32:59,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:32:59,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:32:59,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:32:59,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:32:59,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:32:59,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:32:59,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:32:59,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:32:59,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:32:59,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:32:59,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:32:59,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:32:59,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:32:59,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:32:59,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:32:59,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:32:59,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:32:59,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:32:59,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:32:59,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:32:59,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:32:59,764 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:32:59,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:32:59,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:32:59,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:32:59,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:32:59,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:32:59,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:32:59,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:32:59,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:32:59,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:32:59,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:32:59,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:32:59,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 924a6955b6ce3440b57760793c2baba08166e0c083aedead61a1cd1c863c6081 [2021-12-22 14:32:59,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:32:59,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:32:59,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:32:59,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:32:59,980 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:32:59,983 INFO L432 ainManager$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 [2021-12-22 14:33:00,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0b2a9c3/0ac2c4a8efb24a35b34e7136d5a2eae6/FLAGfbe666384 [2021-12-22 14:33:00,693 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:33:00,694 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 [2021-12-22 14:33:00,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0b2a9c3/0ac2c4a8efb24a35b34e7136d5a2eae6/FLAGfbe666384 [2021-12-22 14:33:00,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0b2a9c3/0ac2c4a8efb24a35b34e7136d5a2eae6 [2021-12-22 14:33:00,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:33:00,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:33:00,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:00,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:33:00,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:33:00,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:00" (1/1) ... [2021-12-22 14:33:00,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bfae72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:00, skipping insertion in model container [2021-12-22 14:33:00,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:00" (1/1) ... [2021-12-22 14:33:00,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:33:00,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:33:02,135 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] [2021-12-22 14:33:02,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:02,259 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:33:02,621 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] [2021-12-22 14:33:02,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:02,885 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:33:02,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02 WrapperNode [2021-12-22 14:33:02,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:02,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:02,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:33:02,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:33:02,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:02,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,133 INFO L137 Inliner]: procedures = 231, calls = 4052, calls flagged for inlining = 65, calls inlined = 61, statements flattened = 5991 [2021-12-22 14:33:03,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:03,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:33:03,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:33:03,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:33:03,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:33:03,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:33:03,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:33:03,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:33:03,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (1/1) ... [2021-12-22 14:33:03,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:33:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:33:03,411 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) [2021-12-22 14:33:03,413 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 [2021-12-22 14:33:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-22 14:33:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury_mh [2021-12-22 14:33:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_read_reg [2021-12-22 14:33:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_read_reg [2021-12-22 14:33:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury [2021-12-22 14:33:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury [2021-12-22 14:33:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:33:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_mercury [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_mercury [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2160_frontend_attach [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2160_frontend_attach [2021-12-22 14:33:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_stop [2021-12-22 14:33:03,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_stop [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_config_pin_mux_modes [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_config_pin_mux_modes [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_start [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_start [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_isoc [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_isoc [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mh [2021-12-22 14:33:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mh [2021-12-22 14:33:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc [2021-12-22 14:33:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc [2021-12-22 14:33:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep6_streaming_ctrl [2021-12-22 14:33:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep6_streaming_ctrl [2021-12-22 14:33:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg_mask [2021-12-22 14:33:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg_mask [2021-12-22 14:33:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_soft_reset [2021-12-22 14:33:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_soft_reset [2021-12-22 14:33:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_stream_config_bulk [2021-12-22 14:33:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_stream_config_bulk [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-22 14:33:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_release_6 [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-22 14:33:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mh_release_5 [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-22 14:33:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_mh_release_2 [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init [2021-12-22 14:33:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init [2021-12-22 14:33:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-22 14:33:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_mercury_release_3 [2021-12-22 14:33:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:33:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-22 14:33:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_atsc_mh_release_4 [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_tuner_demod [2021-12-22 14:33:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_tuner_demod [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_dvbt [2021-12-22 14:33:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_dvbt [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-22 14:33:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_bitbang_sendbyte [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-22 14:33:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lgdt3305_frontend_attach [2021-12-22 14:33:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_check_status [2021-12-22 14:33:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_check_status [2021-12-22 14:33:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep5_streaming_ctrl [2021-12-22 14:33:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep5_streaming_ctrl [2021-12-22 14:33:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:33:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_msg [2021-12-22 14:33:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_msg [2021-12-22 14:33:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:33:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_dvbt [2021-12-22 14:33:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_dvbt [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mh [2021-12-22 14:33:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mh [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ep4_streaming_ctrl [2021-12-22 14:33:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ep4_streaming_ctrl [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_gpio [2021-12-22 14:33:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_gpio [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:33:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-22 14:33:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_atsc_mh [2021-12-22 14:33:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-22 14:33:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_lg2161_ep6_frontend_attach [2021-12-22 14:33:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:33:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_get_chip_info [2021-12-22 14:33:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_get_chip_info [2021-12-22 14:33:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-22 14:33:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury_mh [2021-12-22 14:33:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-22 14:33:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_mercury_mh [2021-12-22 14:33:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_enable_usb_output [2021-12-22 14:33:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_enable_usb_output [2021-12-22 14:33:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-22 14:33:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-22 14:33:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_tuner [2021-12-22 14:33:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_tuner [2021-12-22 14:33:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:33:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:33:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_hw_set_gpio [2021-12-22 14:33:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_hw_set_gpio [2021-12-22 14:33:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:33:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-22 14:33:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mxl111sf_props_dvbt_release_7 [2021-12-22 14:33:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:33:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_set_device_mode [2021-12-22 14:33:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_set_device_mode [2021-12-22 14:33:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ctrl_program_regs [2021-12-22 14:33:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ctrl_program_regs [2021-12-22 14:33:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:33:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-22 14:33:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_streaming_ctrl_atsc_mh [2021-12-22 14:33:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_gpio_mode_switch [2021-12-22 14:33:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_gpio_mode_switch [2021-12-22 14:33:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-22 14:33:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-22 14:33:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_get_stream_config_mercury [2021-12-22 14:33:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_get_stream_config_mercury [2021-12-22 14:33:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_write_reg [2021-12-22 14:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_write_reg [2021-12-22 14:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_ant_hunt [2021-12-22 14:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_ant_hunt [2021-12-22 14:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_set_ant_path [2021-12-22 14:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_set_ant_path [2021-12-22 14:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_init_port_expander [2021-12-22 14:33:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_init_port_expander [2021-12-22 14:33:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_disconnect [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_disconnect [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_frontend_attach_atsc_mh [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_attach_demod [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_attach_demod [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_send_data [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_send_data [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_resume [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_resume [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure mxl111sf_i2c_get_data [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl111sf_i2c_get_data [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:33:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usbv2_probe [2021-12-22 14:33:03,508 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usbv2_probe [2021-12-22 14:33:03,509 INFO L130 BoogieDeclarations]: Found specification of procedure mxl1x1sf_top_master_ctrl [2021-12-22 14:33:03,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mxl1x1sf_top_master_ctrl [2021-12-22 14:33:04,176 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:33:04,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:33:17,265 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:33:17,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:33:17,282 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:33:17,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:17 BoogieIcfgContainer [2021-12-22 14:33:17,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:33:17,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:33:17,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:33:17,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:33:17,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:33:00" (1/3) ... [2021-12-22 14:33:17,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c487b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:17, skipping insertion in model container [2021-12-22 14:33:17,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:02" (2/3) ... [2021-12-22 14:33:17,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c487b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:17, skipping insertion in model container [2021-12-22 14:33:17,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:17" (3/3) ... [2021-12-22 14:33:17,291 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 [2021-12-22 14:33:17,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:33:17,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:33:17,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:33:17,345 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 [2021-12-22 14:33:17,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:33:17,395 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) [2021-12-22 14:33:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 14:33:17,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:17,418 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] [2021-12-22 14:33:17,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash 849558357, now seen corresponding path program 1 times [2021-12-22 14:33:17,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893112068] [2021-12-22 14:33:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:17,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:18,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:18,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893112068] [2021-12-22 14:33:18,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893112068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:18,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:18,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:18,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031141976] [2021-12-22 14:33:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:18,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:18,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:18,107 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) [2021-12-22 14:33:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:18,579 INFO L93 Difference]: Finished difference Result 6429 states and 9972 transitions. [2021-12-22 14:33:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:18,581 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 [2021-12-22 14:33:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:18,623 INFO L225 Difference]: With dead ends: 6429 [2021-12-22 14:33:18,623 INFO L226 Difference]: Without dead ends: 4274 [2021-12-22 14:33:18,640 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 [2021-12-22 14:33:18,645 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, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:18,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3287 Valid, 7063 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:33:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2021-12-22 14:33:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4270. [2021-12-22 14:33:18,937 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) [2021-12-22 14:33:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6616 transitions. [2021-12-22 14:33:18,960 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6616 transitions. Word has length 23 [2021-12-22 14:33:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:18,961 INFO L470 AbstractCegarLoop]: Abstraction has 4270 states and 6616 transitions. [2021-12-22 14:33:18,961 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) [2021-12-22 14:33:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6616 transitions. [2021-12-22 14:33:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 14:33:18,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:18,969 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] [2021-12-22 14:33:18,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:33:18,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1524189522, now seen corresponding path program 1 times [2021-12-22 14:33:18,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:18,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156584952] [2021-12-22 14:33:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:18,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:33:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:19,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156584952] [2021-12-22 14:33:19,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156584952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:19,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256664114] [2021-12-22 14:33:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:19,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:19,258 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) [2021-12-22 14:33:22,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:25,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:27,604 INFO L93 Difference]: Finished difference Result 12252 states and 19168 transitions. [2021-12-22 14:33:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:27,605 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 [2021-12-22 14:33:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:27,652 INFO L225 Difference]: With dead ends: 12252 [2021-12-22 14:33:27,653 INFO L226 Difference]: Without dead ends: 7985 [2021-12-22 14:33:27,676 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 [2021-12-22 14:33:27,677 INFO L933 BasicCegarLoop]: 4220 mSDtfsCounter, 2837 mSDsluCounter, 6434 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 846 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 10654 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:27,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2963 Valid, 10654 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 641 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-12-22 14:33:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2021-12-22 14:33:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7723. [2021-12-22 14:33:27,957 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) [2021-12-22 14:33:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 11988 transitions. [2021-12-22 14:33:27,982 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 11988 transitions. Word has length 25 [2021-12-22 14:33:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:27,982 INFO L470 AbstractCegarLoop]: Abstraction has 7723 states and 11988 transitions. [2021-12-22 14:33:27,982 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) [2021-12-22 14:33:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 11988 transitions. [2021-12-22 14:33:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 14:33:27,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:27,986 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] [2021-12-22 14:33:27,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:33:27,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1994609882, now seen corresponding path program 1 times [2021-12-22 14:33:27,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714013693] [2021-12-22 14:33:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:27,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:28,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:28,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714013693] [2021-12-22 14:33:28,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714013693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:28,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:28,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:28,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130840528] [2021-12-22 14:33:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:28,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:28,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:28,370 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) [2021-12-22 14:33:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:28,565 INFO L93 Difference]: Finished difference Result 7725 states and 11989 transitions. [2021-12-22 14:33:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:28,566 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 [2021-12-22 14:33:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:28,603 INFO L225 Difference]: With dead ends: 7725 [2021-12-22 14:33:28,604 INFO L226 Difference]: Without dead ends: 7722 [2021-12-22 14:33:28,610 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 [2021-12-22 14:33:28,612 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 [2021-12-22 14:33:28,613 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] [2021-12-22 14:33:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2021-12-22 14:33:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7722. [2021-12-22 14:33:28,800 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) [2021-12-22 14:33:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11986 transitions. [2021-12-22 14:33:28,828 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11986 transitions. Word has length 25 [2021-12-22 14:33:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:28,828 INFO L470 AbstractCegarLoop]: Abstraction has 7722 states and 11986 transitions. [2021-12-22 14:33:28,829 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) [2021-12-22 14:33:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11986 transitions. [2021-12-22 14:33:28,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 14:33:28,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:28,831 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] [2021-12-22 14:33:28,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:33:28,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:28,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1704258658, now seen corresponding path program 1 times [2021-12-22 14:33:28,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:28,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527958739] [2021-12-22 14:33:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:28,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:29,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:29,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527958739] [2021-12-22 14:33:29,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527958739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:29,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:29,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:29,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444701796] [2021-12-22 14:33:29,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:29,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:29,077 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) [2021-12-22 14:33:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:29,350 INFO L93 Difference]: Finished difference Result 7724 states and 11987 transitions. [2021-12-22 14:33:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:29,350 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 [2021-12-22 14:33:29,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:29,389 INFO L225 Difference]: With dead ends: 7724 [2021-12-22 14:33:29,389 INFO L226 Difference]: Without dead ends: 7721 [2021-12-22 14:33:29,394 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 [2021-12-22 14:33:29,395 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 [2021-12-22 14:33:29,395 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] [2021-12-22 14:33:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-12-22 14:33:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7721. [2021-12-22 14:33:29,592 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) [2021-12-22 14:33:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7721 states to 7721 states and 11984 transitions. [2021-12-22 14:33:29,617 INFO L78 Accepts]: Start accepts. Automaton has 7721 states and 11984 transitions. Word has length 26 [2021-12-22 14:33:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:29,618 INFO L470 AbstractCegarLoop]: Abstraction has 7721 states and 11984 transitions. [2021-12-22 14:33:29,618 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) [2021-12-22 14:33:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7721 states and 11984 transitions. [2021-12-22 14:33:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 14:33:29,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:29,621 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] [2021-12-22 14:33:29,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:33:29,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1293300439, now seen corresponding path program 1 times [2021-12-22 14:33:29,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:29,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701513411] [2021-12-22 14:33:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:29,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:29,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:29,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701513411] [2021-12-22 14:33:29,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701513411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:29,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:29,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:29,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914201128] [2021-12-22 14:33:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:29,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:29,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:29,877 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) [2021-12-22 14:33:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:30,199 INFO L93 Difference]: Finished difference Result 23129 states and 35913 transitions. [2021-12-22 14:33:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:30,199 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 [2021-12-22 14:33:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:30,314 INFO L225 Difference]: With dead ends: 23129 [2021-12-22 14:33:30,314 INFO L226 Difference]: Without dead ends: 15411 [2021-12-22 14:33:30,352 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 [2021-12-22 14:33:30,353 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 [2021-12-22 14:33:30,354 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] [2021-12-22 14:33:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15411 states. [2021-12-22 14:33:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15411 to 15403. [2021-12-22 14:33:30,776 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) [2021-12-22 14:33:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 23918 transitions. [2021-12-22 14:33:30,830 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 23918 transitions. Word has length 27 [2021-12-22 14:33:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:30,831 INFO L470 AbstractCegarLoop]: Abstraction has 15403 states and 23918 transitions. [2021-12-22 14:33:30,831 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) [2021-12-22 14:33:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 23918 transitions. [2021-12-22 14:33:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 14:33:30,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:30,835 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] [2021-12-22 14:33:30,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:33:30,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1438492671, now seen corresponding path program 1 times [2021-12-22 14:33:30,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:30,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605597406] [2021-12-22 14:33:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:30,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:31,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605597406] [2021-12-22 14:33:31,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605597406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:31,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:31,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:31,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820768797] [2021-12-22 14:33:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:31,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:31,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:31,073 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) [2021-12-22 14:33:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:31,318 INFO L93 Difference]: Finished difference Result 15405 states and 23919 transitions. [2021-12-22 14:33:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:31,319 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 [2021-12-22 14:33:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:31,379 INFO L225 Difference]: With dead ends: 15405 [2021-12-22 14:33:31,379 INFO L226 Difference]: Without dead ends: 15402 [2021-12-22 14:33:31,391 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 [2021-12-22 14:33:31,394 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 [2021-12-22 14:33:31,394 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] [2021-12-22 14:33:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15402 states. [2021-12-22 14:33:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15402 to 15402. [2021-12-22 14:33:31,862 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) [2021-12-22 14:33:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15402 states to 15402 states and 23916 transitions. [2021-12-22 14:33:31,913 INFO L78 Accepts]: Start accepts. Automaton has 15402 states and 23916 transitions. Word has length 28 [2021-12-22 14:33:31,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:31,915 INFO L470 AbstractCegarLoop]: Abstraction has 15402 states and 23916 transitions. [2021-12-22 14:33:31,915 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) [2021-12-22 14:33:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15402 states and 23916 transitions. [2021-12-22 14:33:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 14:33:31,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:31,919 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] [2021-12-22 14:33:31,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:33:31,920 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1644479700, now seen corresponding path program 1 times [2021-12-22 14:33:31,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:31,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718508839] [2021-12-22 14:33:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:31,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:32,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718508839] [2021-12-22 14:33:32,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718508839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:32,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:32,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:32,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654702333] [2021-12-22 14:33:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:32,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:32,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:32,137 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) [2021-12-22 14:33:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:32,377 INFO L93 Difference]: Finished difference Result 15404 states and 23917 transitions. [2021-12-22 14:33:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:32,386 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 [2021-12-22 14:33:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:32,448 INFO L225 Difference]: With dead ends: 15404 [2021-12-22 14:33:32,448 INFO L226 Difference]: Without dead ends: 15392 [2021-12-22 14:33:32,461 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 [2021-12-22 14:33:32,462 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 [2021-12-22 14:33:32,462 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] [2021-12-22 14:33:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2021-12-22 14:33:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 15392. [2021-12-22 14:33:32,917 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) [2021-12-22 14:33:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 23901 transitions. [2021-12-22 14:33:32,980 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 23901 transitions. Word has length 29 [2021-12-22 14:33:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:32,980 INFO L470 AbstractCegarLoop]: Abstraction has 15392 states and 23901 transitions. [2021-12-22 14:33:32,980 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) [2021-12-22 14:33:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 23901 transitions. [2021-12-22 14:33:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 14:33:32,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:32,991 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] [2021-12-22 14:33:32,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:33:32,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -989383205, now seen corresponding path program 1 times [2021-12-22 14:33:32,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:32,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421610431] [2021-12-22 14:33:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:32,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:33:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 14:33:33,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421610431] [2021-12-22 14:33:33,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421610431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:33,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:33,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:33:33,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357126178] [2021-12-22 14:33:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:33,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:33:33,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:33:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:33:33,335 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) [2021-12-22 14:33:38,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:40,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:43,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:43,288 INFO L93 Difference]: Finished difference Result 17853 states and 28333 transitions. [2021-12-22 14:33:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:33:43,288 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 [2021-12-22 14:33:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:43,357 INFO L225 Difference]: With dead ends: 17853 [2021-12-22 14:33:43,358 INFO L226 Difference]: Without dead ends: 17033 [2021-12-22 14:33:43,372 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 [2021-12-22 14:33:43,373 INFO L933 BasicCegarLoop]: 4059 mSDtfsCounter, 1942 mSDsluCounter, 13253 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 786 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 17312 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:43,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1949 Valid, 17312 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 649 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-12-22 14:33:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17033 states. [2021-12-22 14:33:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17033 to 14669. [2021-12-22 14:33:43,847 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) [2021-12-22 14:33:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14669 states to 14669 states and 22780 transitions. [2021-12-22 14:33:43,894 INFO L78 Accepts]: Start accepts. Automaton has 14669 states and 22780 transitions. Word has length 52 [2021-12-22 14:33:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:43,894 INFO L470 AbstractCegarLoop]: Abstraction has 14669 states and 22780 transitions. [2021-12-22 14:33:43,894 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) [2021-12-22 14:33:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 14669 states and 22780 transitions. [2021-12-22 14:33:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 14:33:43,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:43,904 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] [2021-12-22 14:33:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:33:43,905 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1669441575, now seen corresponding path program 1 times [2021-12-22 14:33:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788013749] [2021-12-22 14:33:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:43,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:33:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 14:33:44,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:44,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788013749] [2021-12-22 14:33:44,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788013749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:44,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:44,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:44,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545853500] [2021-12-22 14:33:44,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:44,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:44,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:44,147 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) [2021-12-22 14:33:48,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:49,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:33:51,911 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 [] [2021-12-22 14:33:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:53,907 INFO L93 Difference]: Finished difference Result 29986 states and 46862 transitions. [2021-12-22 14:33:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:53,908 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 [2021-12-22 14:33:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:53,968 INFO L225 Difference]: With dead ends: 29986 [2021-12-22 14:33:53,968 INFO L226 Difference]: Without dead ends: 15320 [2021-12-22 14:33:54,016 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 [2021-12-22 14:33:54,016 INFO L933 BasicCegarLoop]: 5459 mSDtfsCounter, 3412 mSDsluCounter, 6848 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 12307 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:54,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3535 Valid, 12307 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 742 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-12-22 14:33:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15320 states. [2021-12-22 14:33:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15320 to 14813. [2021-12-22 14:33:54,555 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) [2021-12-22 14:33:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 22972 transitions. [2021-12-22 14:33:54,603 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 22972 transitions. Word has length 52 [2021-12-22 14:33:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:54,604 INFO L470 AbstractCegarLoop]: Abstraction has 14813 states and 22972 transitions. [2021-12-22 14:33:54,604 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) [2021-12-22 14:33:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 22972 transitions. [2021-12-22 14:33:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 14:33:54,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:54,624 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] [2021-12-22 14:33:54,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:33:54,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -328176558, now seen corresponding path program 1 times [2021-12-22 14:33:54,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000590682] [2021-12-22 14:33:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:54,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:33:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:33:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 14:33:54,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:54,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000590682] [2021-12-22 14:33:54,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000590682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:54,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:54,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:33:54,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324211766] [2021-12-22 14:33:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:54,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:33:54,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:54,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:33:54,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:33:54,899 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) [2021-12-22 14:33:58,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []