./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.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 efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:28:13,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:28:13,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:28:13,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:28:13,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:28:13,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:28:13,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:28:13,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:28:13,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:28:13,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:28:13,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:28:13,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:28:13,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:28:13,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:28:13,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:28:13,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:28:13,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:28:13,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:28:13,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:28:13,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:28:13,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:28:13,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:28:13,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:28:13,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:28:13,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:28:13,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:28:13,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:28:13,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:28:13,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:28:13,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:28:13,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:28:13,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:28:13,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:28:13,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:28:13,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:28:13,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:28:13,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:28:13,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:28:13,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:28:13,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:28:13,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:28:13,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:28:13,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:28:13,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:28:13,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:28:13,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:28:13,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:28:13,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:28:13,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:28:13,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:28:13,956 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:28:13,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:28:13,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:28:13,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:28:13,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:28:13,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:28:13,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:28:13,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:28:13,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:28:13,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:28:13,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:28:13,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:28:13,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:28:13,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:28:13,960 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:28:13,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:28:13,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:28:13,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:28:13,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 [2021-12-14 17:28:14,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:28:14,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:28:14,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:28:14,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:28:14,168 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:28:14,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2021-12-14 17:28:14,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeaf4e23/4360b232e87940bb9a651469d1ede665/FLAG3395b8ef7 [2021-12-14 17:28:14,801 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:28:14,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2021-12-14 17:28:14,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeaf4e23/4360b232e87940bb9a651469d1ede665/FLAG3395b8ef7 [2021-12-14 17:28:14,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdeaf4e23/4360b232e87940bb9a651469d1ede665 [2021-12-14 17:28:14,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:28:14,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:28:14,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:28:14,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:28:14,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:28:14,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:28:14" (1/1) ... [2021-12-14 17:28:14,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8ba03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:14, skipping insertion in model container [2021-12-14 17:28:14,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:28:14" (1/1) ... [2021-12-14 17:28:14,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:28:15,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:28:16,172 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i[404095,404108] [2021-12-14 17:28:16,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:28:16,290 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:28:16,550 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i[404095,404108] [2021-12-14 17:28:16,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:28:16,614 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:28:16,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16 WrapperNode [2021-12-14 17:28:16,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:28:16,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:28:16,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:28:16,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:28:16,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,815 INFO L137 Inliner]: procedures = 167, calls = 2343, calls flagged for inlining = 49, calls inlined = 38, statements flattened = 5030 [2021-12-14 17:28:16,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:28:16,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:28:16,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:28:16,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:28:16,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:16,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:17,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:17,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:28:17,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:28:17,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:28:17,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:28:17,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (1/1) ... [2021-12-14 17:28:17,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:28:17,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:28:17,058 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) [2021-12-14 17:28:17,063 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 [2021-12-14 17:28:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_remove [2021-12-14 17:28:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_remove [2021-12-14 17:28:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:28:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:28:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_demod_init [2021-12-14 17:28:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_demod_init [2021-12-14 17:28:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 17:28:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 17:28:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_release [2021-12-14 17:28:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_release [2021-12-14 17:28:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:28:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-14 17:28:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-14 17:28:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:28:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:28:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-12-14 17:28:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-12-14 17:28:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:28:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:28:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure attach_xc3028 [2021-12-14 17:28:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_xc3028 [2021-12-14 17:28:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:28:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:28:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:28:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_freq [2021-12-14 17:28:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_freq [2021-12-14 17:28:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:28:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:28:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_fusionhdtv_demod_init [2021-12-14 17:28:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_fusionhdtv_demod_init [2021-12-14 17:28:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure stv0900_set_ts_param [2021-12-14 17:28:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0900_set_ts_param [2021-12-14 17:28:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-14 17:28:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-14 17:28:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure samsung_smt_7020_tuner_set_params [2021-12-14 17:28:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure samsung_smt_7020_tuner_set_params [2021-12-14 17:28:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-14 17:28:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-14 17:28:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_gate_ctrl [2021-12-14 17:28:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_gate_ctrl [2021-12-14 17:28:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_set_ts_param [2021-12-14 17:28:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_set_ts_param [2021-12-14 17:28:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_buf_prepare [2021-12-14 17:28:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_buf_prepare [2021-12-14 17:28:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:28:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_acquire [2021-12-14 17:28:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_acquire [2021-12-14 17:28:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:28:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:28:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:28:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:28:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_bus_ctrl [2021-12-14 17:28:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_bus_ctrl [2021-12-14 17:28:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:28:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:28:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 17:28:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 17:28:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 17:28:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-14 17:28:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure nxt200x_set_ts_param [2021-12-14 17:28:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt200x_set_ts_param [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:28:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:28:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-14 17:28:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-14 17:28:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:28:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:28:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure or51132_set_ts_param [2021-12-14 17:28:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure or51132_set_ts_param [2021-12-14 17:28:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_probe [2021-12-14 17:28:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_probe [2021-12-14 17:28:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_get_frontend [2021-12-14 17:28:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_get_frontend [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_reset_device [2021-12-14 17:28:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_reset_device [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-14 17:28:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_dual_demod_init [2021-12-14 17:28:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_dual_demod_init [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:28:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_pro_demod_init [2021-12-14 17:28:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_pro_demod_init [2021-12-14 17:28:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_bandw [2021-12-14 17:28:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_bandw [2021-12-14 17:28:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure cx24123_set_ts_param [2021-12-14 17:28:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24123_set_ts_param [2021-12-14 17:28:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:28:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:28:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-14 17:28:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-14 17:28:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure lgdt330x_set_ts_param [2021-12-14 17:28:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure lgdt330x_set_ts_param [2021-12-14 17:28:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register [2021-12-14 17:28:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register [2021-12-14 17:28:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-14 17:28:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-14 17:28:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2021-12-14 17:28:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2021-12-14 17:28:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_dealloc_frontends [2021-12-14 17:28:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_dealloc_frontends [2021-12-14 17:28:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-14 17:28:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-14 17:28:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:28:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:28:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:28:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:28:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:28:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:28:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:28:17,650 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:28:17,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:28:23,181 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:28:23,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:28:23,192 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:28:23,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:28:23 BoogieIcfgContainer [2021-12-14 17:28:23,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:28:23,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:28:23,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:28:23,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:28:23,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:28:14" (1/3) ... [2021-12-14 17:28:23,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6dd645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:28:23, skipping insertion in model container [2021-12-14 17:28:23,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:16" (2/3) ... [2021-12-14 17:28:23,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6dd645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:28:23, skipping insertion in model container [2021-12-14 17:28:23,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:28:23" (3/3) ... [2021-12-14 17:28:23,201 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2021-12-14 17:28:23,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:28:23,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:28:23,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:28:23,242 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 [2021-12-14 17:28:23,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:28:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1297 states have (on average 1.3824209714726292) internal successors, (1793), 1390 states have internal predecessors, (1793), 588 states have call successors, (588), 51 states have call predecessors, (588), 51 states have return successors, (588), 587 states have call predecessors, (588), 588 states have call successors, (588) [2021-12-14 17:28:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-14 17:28:23,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:23,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:23,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:23,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash 983380094, now seen corresponding path program 1 times [2021-12-14 17:28:23,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:23,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387401229] [2021-12-14 17:28:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:23,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:28:23,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:23,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387401229] [2021-12-14 17:28:23,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387401229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:23,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:23,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:28:23,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859629888] [2021-12-14 17:28:23,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:23,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:28:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:28:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:23,741 INFO L87 Difference]: Start difference. First operand has 1938 states, 1297 states have (on average 1.3824209714726292) internal successors, (1793), 1390 states have internal predecessors, (1793), 588 states have call successors, (588), 51 states have call predecessors, (588), 51 states have return successors, (588), 587 states have call predecessors, (588), 588 states have call successors, (588) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-14 17:28:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:24,099 INFO L93 Difference]: Finished difference Result 5574 states and 8588 transitions. [2021-12-14 17:28:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:28:24,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 14 [2021-12-14 17:28:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:24,137 INFO L225 Difference]: With dead ends: 5574 [2021-12-14 17:28:24,137 INFO L226 Difference]: Without dead ends: 3640 [2021-12-14 17:28:24,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:24,153 INFO L933 BasicCegarLoop]: 3489 mSDtfsCounter, 2902 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:24,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2902 Valid, 6153 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:28:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-12-14 17:28:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3637. [2021-12-14 17:28:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 2447 states have (on average 1.3796485492439723) internal successors, (3376), 2620 states have internal predecessors, (3376), 1093 states have call successors, (1093), 96 states have call predecessors, (1093), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2021-12-14 17:28:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5575 transitions. [2021-12-14 17:28:24,421 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5575 transitions. Word has length 14 [2021-12-14 17:28:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:24,422 INFO L470 AbstractCegarLoop]: Abstraction has 3637 states and 5575 transitions. [2021-12-14 17:28:24,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-14 17:28:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5575 transitions. [2021-12-14 17:28:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 17:28:24,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:24,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:24,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:28:24,424 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 418913757, now seen corresponding path program 1 times [2021-12-14 17:28:24,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:24,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635938424] [2021-12-14 17:28:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:24,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:24,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:28:24,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:24,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635938424] [2021-12-14 17:28:24,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635938424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:24,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:24,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:28:24,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464378410] [2021-12-14 17:28:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:24,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:28:24,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:28:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:24,614 INFO L87 Difference]: Start difference. First operand 3637 states and 5575 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-14 17:28:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:24,710 INFO L93 Difference]: Finished difference Result 3639 states and 5576 transitions. [2021-12-14 17:28:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:28:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2021-12-14 17:28:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:24,725 INFO L225 Difference]: With dead ends: 3639 [2021-12-14 17:28:24,725 INFO L226 Difference]: Without dead ends: 3636 [2021-12-14 17:28:24,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:24,728 INFO L933 BasicCegarLoop]: 2951 mSDtfsCounter, 2942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:24,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 2951 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:28:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2021-12-14 17:28:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3636. [2021-12-14 17:28:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 2447 states have (on average 1.3792398855741725) internal successors, (3375), 2619 states have internal predecessors, (3375), 1092 states have call successors, (1092), 96 states have call predecessors, (1092), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2021-12-14 17:28:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5573 transitions. [2021-12-14 17:28:24,877 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5573 transitions. Word has length 15 [2021-12-14 17:28:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:24,878 INFO L470 AbstractCegarLoop]: Abstraction has 3636 states and 5573 transitions. [2021-12-14 17:28:24,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-14 17:28:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5573 transitions. [2021-12-14 17:28:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:28:24,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:24,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:24,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:28:24,880 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 100331361, now seen corresponding path program 1 times [2021-12-14 17:28:24,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:24,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921991830] [2021-12-14 17:28:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:24,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:28:25,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:25,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921991830] [2021-12-14 17:28:25,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921991830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:25,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:25,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:28:25,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310045545] [2021-12-14 17:28:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:25,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:28:25,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:28:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:25,059 INFO L87 Difference]: Start difference. First operand 3636 states and 5573 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-14 17:28:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:25,204 INFO L93 Difference]: Finished difference Result 3638 states and 5574 transitions. [2021-12-14 17:28:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:28:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2021-12-14 17:28:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:25,223 INFO L225 Difference]: With dead ends: 3638 [2021-12-14 17:28:25,223 INFO L226 Difference]: Without dead ends: 3635 [2021-12-14 17:28:25,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:25,229 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 2939 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:25,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2939 Valid, 2949 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:28:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-12-14 17:28:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2021-12-14 17:28:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2447 states have (on average 1.3788312219043728) internal successors, (3374), 2618 states have internal predecessors, (3374), 1091 states have call successors, (1091), 96 states have call predecessors, (1091), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2021-12-14 17:28:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5571 transitions. [2021-12-14 17:28:25,385 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5571 transitions. Word has length 16 [2021-12-14 17:28:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:25,385 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 5571 transitions. [2021-12-14 17:28:25,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-14 17:28:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5571 transitions. [2021-12-14 17:28:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 17:28:25,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:25,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:25,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:28:25,386 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783456, now seen corresponding path program 1 times [2021-12-14 17:28:25,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907830585] [2021-12-14 17:28:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:25,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:28:25,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:25,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907830585] [2021-12-14 17:28:25,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907830585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:25,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:25,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:28:25,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349258676] [2021-12-14 17:28:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:28:25,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:28:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:25,513 INFO L87 Difference]: Start difference. First operand 3635 states and 5571 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-12-14 17:28:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:25,611 INFO L93 Difference]: Finished difference Result 3637 states and 5572 transitions. [2021-12-14 17:28:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:28:25,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2021-12-14 17:28:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:25,625 INFO L225 Difference]: With dead ends: 3637 [2021-12-14 17:28:25,626 INFO L226 Difference]: Without dead ends: 3634 [2021-12-14 17:28:25,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:25,628 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 2936 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:25,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 2947 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:28:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2021-12-14 17:28:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2021-12-14 17:28:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2447 states have (on average 1.378422558234573) internal successors, (3373), 2617 states have internal predecessors, (3373), 1090 states have call successors, (1090), 96 states have call predecessors, (1090), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2021-12-14 17:28:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5569 transitions. [2021-12-14 17:28:25,828 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5569 transitions. Word has length 17 [2021-12-14 17:28:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:25,829 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 5569 transitions. [2021-12-14 17:28:25,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-12-14 17:28:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5569 transitions. [2021-12-14 17:28:25,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:28:25,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:25,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:25,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:28:25,830 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:25,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:25,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1894335044, now seen corresponding path program 1 times [2021-12-14 17:28:25,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558255267] [2021-12-14 17:28:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:25,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:28:25,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:25,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558255267] [2021-12-14 17:28:25,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558255267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:25,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:25,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:28:25,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537231151] [2021-12-14 17:28:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:25,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:28:25,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:28:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:25,993 INFO L87 Difference]: Start difference. First operand 3634 states and 5569 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-14 17:28:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:26,112 INFO L93 Difference]: Finished difference Result 3636 states and 5570 transitions. [2021-12-14 17:28:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:28:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2021-12-14 17:28:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:26,130 INFO L225 Difference]: With dead ends: 3636 [2021-12-14 17:28:26,130 INFO L226 Difference]: Without dead ends: 3623 [2021-12-14 17:28:26,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:28:26,132 INFO L933 BasicCegarLoop]: 2946 mSDtfsCounter, 2933 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:26,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2933 Valid, 2946 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:28:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2021-12-14 17:28:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2021-12-14 17:28:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2438 states have (on average 1.3785890073831009) internal successors, (3361), 2607 states have internal predecessors, (3361), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 96 states have return successors, (1105), 1087 states have call predecessors, (1105), 1086 states have call successors, (1105) [2021-12-14 17:28:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5554 transitions. [2021-12-14 17:28:26,324 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5554 transitions. Word has length 18 [2021-12-14 17:28:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:26,324 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 5554 transitions. [2021-12-14 17:28:26,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-14 17:28:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5554 transitions. [2021-12-14 17:28:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 17:28:26,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:26,337 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:26,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:28:26,338 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash -400911686, now seen corresponding path program 1 times [2021-12-14 17:28:26,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:26,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802251083] [2021-12-14 17:28:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:26,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:28:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:28:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:28:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:28:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:28:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-14 17:28:26,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802251083] [2021-12-14 17:28:26,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802251083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:26,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:26,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:28:26,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399279614] [2021-12-14 17:28:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:28:26,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:28:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:28:26,675 INFO L87 Difference]: Start difference. First operand 3623 states and 5554 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:33,830 INFO L93 Difference]: Finished difference Result 7333 states and 11735 transitions. [2021-12-14 17:28:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:28:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 137 [2021-12-14 17:28:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:33,848 INFO L225 Difference]: With dead ends: 7333 [2021-12-14 17:28:33,848 INFO L226 Difference]: Without dead ends: 3718 [2021-12-14 17:28:33,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:28:33,861 INFO L933 BasicCegarLoop]: 3002 mSDtfsCounter, 297 mSDsluCounter, 7332 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 10334 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:33,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 10334 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-12-14 17:28:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2021-12-14 17:28:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3630. [2021-12-14 17:28:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 2444 states have (on average 1.377659574468085) internal successors, (3367), 2614 states have internal predecessors, (3367), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 97 states have return successors, (1106), 1087 states have call predecessors, (1106), 1086 states have call successors, (1106) [2021-12-14 17:28:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5561 transitions. [2021-12-14 17:28:34,117 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5561 transitions. Word has length 137 [2021-12-14 17:28:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:34,118 INFO L470 AbstractCegarLoop]: Abstraction has 3630 states and 5561 transitions. [2021-12-14 17:28:34,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5561 transitions. [2021-12-14 17:28:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 17:28:34,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:34,127 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:34,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:28:34,127 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash 409251297, now seen corresponding path program 1 times [2021-12-14 17:28:34,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:34,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288337971] [2021-12-14 17:28:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:34,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:28:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:28:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:28:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:28:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 17:28:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-14 17:28:34,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:34,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288337971] [2021-12-14 17:28:34,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288337971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:34,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:34,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:28:34,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206097377] [2021-12-14 17:28:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:34,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:28:34,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:28:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:28:34,444 INFO L87 Difference]: Start difference. First operand 3630 states and 5561 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:37,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:39,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:41,968 INFO L93 Difference]: Finished difference Result 7327 states and 11730 transitions. [2021-12-14 17:28:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:28:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 139 [2021-12-14 17:28:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:41,988 INFO L225 Difference]: With dead ends: 7327 [2021-12-14 17:28:41,988 INFO L226 Difference]: Without dead ends: 3705 [2021-12-14 17:28:42,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:28:42,001 INFO L933 BasicCegarLoop]: 2950 mSDtfsCounter, 272 mSDsluCounter, 4409 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 7359 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:42,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 7359 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-12-14 17:28:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-12-14 17:28:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3632. [2021-12-14 17:28:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 2446 states have (on average 1.3773507767784137) internal successors, (3369), 2616 states have internal predecessors, (3369), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 97 states have return successors, (1106), 1087 states have call predecessors, (1106), 1086 states have call successors, (1106) [2021-12-14 17:28:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5563 transitions. [2021-12-14 17:28:42,239 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5563 transitions. Word has length 139 [2021-12-14 17:28:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:42,241 INFO L470 AbstractCegarLoop]: Abstraction has 3632 states and 5563 transitions. [2021-12-14 17:28:42,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5563 transitions. [2021-12-14 17:28:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 17:28:42,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:42,246 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:42,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:28:42,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash -102740549, now seen corresponding path program 1 times [2021-12-14 17:28:42,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:42,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537523262] [2021-12-14 17:28:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:42,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:28:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:28:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:28:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:28:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:28:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-14 17:28:42,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:42,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537523262] [2021-12-14 17:28:42,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537523262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:42,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:28:42,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293214692] [2021-12-14 17:28:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:42,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:28:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:28:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:28:42,621 INFO L87 Difference]: Start difference. First operand 3632 states and 5563 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:45,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:47,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:51,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:53,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:55,826 INFO L93 Difference]: Finished difference Result 5648 states and 9037 transitions. [2021-12-14 17:28:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:28:55,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-12-14 17:28:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:55,851 INFO L225 Difference]: With dead ends: 5648 [2021-12-14 17:28:55,851 INFO L226 Difference]: Without dead ends: 3695 [2021-12-14 17:28:55,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:28:55,858 INFO L933 BasicCegarLoop]: 5559 mSDtfsCounter, 2620 mSDsluCounter, 5845 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 794 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3080 SdHoareTripleChecker+Valid, 11404 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:55,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3080 Valid, 11404 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 1383 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-12-14 17:28:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-12-14 17:28:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3620. [2021-12-14 17:28:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 2437 states have (on average 1.3779236766516207) internal successors, (3358), 2607 states have internal predecessors, (3358), 1087 states have call successors, (1087), 96 states have call predecessors, (1087), 95 states have return successors, (1086), 1084 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-12-14 17:28:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5531 transitions. [2021-12-14 17:28:56,100 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5531 transitions. Word has length 141 [2021-12-14 17:28:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:56,101 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 5531 transitions. [2021-12-14 17:28:56,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:28:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5531 transitions. [2021-12-14 17:28:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-14 17:28:56,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:56,111 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:56,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:28:56,112 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -741859133, now seen corresponding path program 1 times [2021-12-14 17:28:56,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566207038] [2021-12-14 17:28:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:56,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:28:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:28:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:28:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:28:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:28:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:28:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:28:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-14 17:28:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-14 17:28:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566207038] [2021-12-14 17:28:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566207038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:56,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:28:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713525078] [2021-12-14 17:28:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:56,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:28:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:28:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:28:56,557 INFO L87 Difference]: Start difference. First operand 3620 states and 5531 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 17:29:02,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:29:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:29:08,212 INFO L93 Difference]: Finished difference Result 7442 states and 11802 transitions. [2021-12-14 17:29:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:29:08,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 228 [2021-12-14 17:29:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:29:08,225 INFO L225 Difference]: With dead ends: 7442 [2021-12-14 17:29:08,225 INFO L226 Difference]: Without dead ends: 3830 [2021-12-14 17:29:08,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:29:08,237 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 456 mSDsluCounter, 12934 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 15903 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:29:08,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 15903 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2021-12-14 17:29:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2021-12-14 17:29:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3722. [2021-12-14 17:29:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2509 states have (on average 1.3754483858110802) internal successors, (3451), 2679 states have internal predecessors, (3451), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2021-12-14 17:29:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5676 transitions. [2021-12-14 17:29:08,423 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5676 transitions. Word has length 228 [2021-12-14 17:29:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:29:08,423 INFO L470 AbstractCegarLoop]: Abstraction has 3722 states and 5676 transitions. [2021-12-14 17:29:08,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 17:29:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5676 transitions. [2021-12-14 17:29:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-14 17:29:08,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:29:08,433 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:29:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:29:08,433 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:29:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:29:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1549007365, now seen corresponding path program 1 times [2021-12-14 17:29:08,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:29:08,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341406726] [2021-12-14 17:29:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:29:08,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:29:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:29:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:29:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:29:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:29:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:29:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:29:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:29:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:29:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-14 17:29:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-14 17:29:09,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:29:09,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341406726] [2021-12-14 17:29:09,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341406726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:29:09,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:29:09,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:29:09,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782560208] [2021-12-14 17:29:09,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:29:09,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:29:09,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:29:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:29:09,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:29:09,063 INFO L87 Difference]: Start difference. First operand 3722 states and 5676 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:29:10,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:29:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:29:14,039 INFO L93 Difference]: Finished difference Result 7526 states and 11964 transitions. [2021-12-14 17:29:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:29:14,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 228 [2021-12-14 17:29:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:29:14,056 INFO L225 Difference]: With dead ends: 7526 [2021-12-14 17:29:14,056 INFO L226 Difference]: Without dead ends: 3812 [2021-12-14 17:29:14,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:29:14,068 INFO L933 BasicCegarLoop]: 2971 mSDtfsCounter, 2805 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3176 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:29:14,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3176 Valid, 4621 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 17:29:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-12-14 17:29:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3722. [2021-12-14 17:29:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2509 states have (on average 1.3698684734954165) internal successors, (3437), 2679 states have internal predecessors, (3437), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2021-12-14 17:29:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5662 transitions. [2021-12-14 17:29:14,275 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5662 transitions. Word has length 228 [2021-12-14 17:29:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:29:14,275 INFO L470 AbstractCegarLoop]: Abstraction has 3722 states and 5662 transitions. [2021-12-14 17:29:14,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:29:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5662 transitions. [2021-12-14 17:29:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-14 17:29:14,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:29:14,287 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:29:14,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:29:14,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:29:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:29:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1801960069, now seen corresponding path program 1 times [2021-12-14 17:29:14,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:29:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359623255] [2021-12-14 17:29:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:29:14,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:29:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:29:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:29:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:29:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:29:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:29:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:29:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:29:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:29:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-14 17:29:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-14 17:29:14,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:29:14,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359623255] [2021-12-14 17:29:14,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359623255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:29:14,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942787615] [2021-12-14 17:29:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:29:14,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:29:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:29:14,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:29:14,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:29:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:15,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-14 17:29:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:29:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-14 17:29:16,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:29:16,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942787615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:29:16,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:29:16,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 17:29:16,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136342228] [2021-12-14 17:29:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:29:16,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:29:16,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:29:16,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:29:16,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:29:16,318 INFO L87 Difference]: Start difference. First operand 3722 states and 5662 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 17:29:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:29:16,433 INFO L93 Difference]: Finished difference Result 7496 states and 11429 transitions. [2021-12-14 17:29:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:29:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 228 [2021-12-14 17:29:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:29:16,452 INFO L225 Difference]: With dead ends: 7496 [2021-12-14 17:29:16,452 INFO L226 Difference]: Without dead ends: 3782 [2021-12-14 17:29:16,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:29:16,464 INFO L933 BasicCegarLoop]: 2926 mSDtfsCounter, 1134 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:29:16,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 4338 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:29:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-12-14 17:29:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3734. [2021-12-14 17:29:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 2521 states have (on average 1.3704879016263387) internal successors, (3455), 2691 states have internal predecessors, (3455), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2021-12-14 17:29:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5680 transitions. [2021-12-14 17:29:16,627 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5680 transitions. Word has length 228 [2021-12-14 17:29:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:29:16,628 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 5680 transitions. [2021-12-14 17:29:16,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 17:29:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5680 transitions. [2021-12-14 17:29:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-14 17:29:16,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:29:16,640 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:29:16,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:29:16,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 17:29:16,852 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:29:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:29:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash 974849929, now seen corresponding path program 1 times [2021-12-14 17:29:16,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:29:16,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934532672] [2021-12-14 17:29:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:29:16,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:29:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:29:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:29:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:29:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:29:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:29:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:29:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 17:29:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-14 17:29:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-14 17:29:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:29:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:29:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-14 17:29:17,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:29:17,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934532672] [2021-12-14 17:29:17,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934532672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:29:17,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:29:17,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:29:17,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565424302] [2021-12-14 17:29:17,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:29:17,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:29:17,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:29:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:29:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:29:17,290 INFO L87 Difference]: Start difference. First operand 3734 states and 5680 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)