./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-dev-e19ca92 [2021-12-22 14:22:20,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:22:20,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:22:20,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:22:20,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:22:20,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:22:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:22:20,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:22:20,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:22:20,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:22:20,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:22:20,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:22:20,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:22:20,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:22:20,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:22:20,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:22:20,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:22:20,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:22:21,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:22:21,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:22:21,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:22:21,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:22:21,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:22:21,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:22:21,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:22:21,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:22:21,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:22:21,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:22:21,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:22:21,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:22:21,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:22:21,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:22:21,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:22:21,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:22:21,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:22:21,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:22:21,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:22:21,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:22:21,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:22:21,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:22:21,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:22:21,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:22:21,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:22:21,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:22:21,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:22:21,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:22:21,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:22:21,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:22:21,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:22:21,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:22:21,050 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:22:21,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:22:21,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:22:21,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:22:21,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:22:21,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:22:21,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:22:21,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:22:21,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:22:21,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:22:21,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:22:21,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:22:21,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:22:21,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:22:21,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:22:21,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:22:21,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:22:21,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:22:21,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:22:21,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:22:21,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:22:21,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:22:21,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:22:21,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 [2021-12-22 14:22:21,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:22:21,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:22:21,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:22:21,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:22:21,302 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:22:21,303 INFO L432 ainManager$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 [2021-12-22 14:22:21,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca15f5694/a01330d1705047219edb04483d228cab/FLAG8270aa987 [2021-12-22 14:22:22,133 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:22:22,134 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 [2021-12-22 14:22:22,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca15f5694/a01330d1705047219edb04483d228cab/FLAG8270aa987 [2021-12-22 14:22:22,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca15f5694/a01330d1705047219edb04483d228cab [2021-12-22 14:22:22,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:22:22,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:22:22,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:22:22,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:22:22,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:22:22,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:22:22" (1/1) ... [2021-12-22 14:22:22,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5473c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:22, skipping insertion in model container [2021-12-22 14:22:22,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:22:22" (1/1) ... [2021-12-22 14:22:22,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:22:22,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:22:24,176 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] [2021-12-22 14:22:24,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:22:24,395 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:22:24,778 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] [2021-12-22 14:22:24,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:22:24,851 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:22:24,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24 WrapperNode [2021-12-22 14:22:24,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:22:24,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:22:24,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:22:24,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:22:24,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:24,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,119 INFO L137 Inliner]: procedures = 167, calls = 2343, calls flagged for inlining = 49, calls inlined = 38, statements flattened = 5030 [2021-12-22 14:22:25,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:22:25,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:22:25,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:22:25,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:22:25,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:22:25,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:22:25,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:22:25,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:22:25,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (1/1) ... [2021-12-22 14:22:25,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:22:25,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:22:25,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:22:25,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_remove [2021-12-22 14:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_remove [2021-12-22 14:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_demod_init [2021-12-22 14:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_demod_init [2021-12-22 14:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_release [2021-12-22 14:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_release [2021-12-22 14:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-22 14:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-22 14:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-12-22 14:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-12-22 14:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:22:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure attach_xc3028 [2021-12-22 14:22:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_xc3028 [2021-12-22 14:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_freq [2021-12-22 14:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_freq [2021-12-22 14:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_fusionhdtv_demod_init [2021-12-22 14:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_fusionhdtv_demod_init [2021-12-22 14:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure stv0900_set_ts_param [2021-12-22 14:22:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0900_set_ts_param [2021-12-22 14:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-22 14:22:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-22 14:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure samsung_smt_7020_tuner_set_params [2021-12-22 14:22:25,425 INFO L138 BoogieDeclarations]: Found implementation of procedure samsung_smt_7020_tuner_set_params [2021-12-22 14:22:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-22 14:22:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-22 14:22:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_gate_ctrl [2021-12-22 14:22:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_gate_ctrl [2021-12-22 14:22:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_set_ts_param [2021-12-22 14:22:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_set_ts_param [2021-12-22 14:22:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_buf_prepare [2021-12-22 14:22:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_buf_prepare [2021-12-22 14:22:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:22:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_acquire [2021-12-22 14:22:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_acquire [2021-12-22 14:22:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:22:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:22:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-22 14:22:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-22 14:22:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_bus_ctrl [2021-12-22 14:22:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_bus_ctrl [2021-12-22 14:22:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:22:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 14:22:25,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 14:22:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 14:22:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 14:22:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:22:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:22:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-22 14:22:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-22 14:22:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure nxt200x_set_ts_param [2021-12-22 14:22:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt200x_set_ts_param [2021-12-22 14:22:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:22:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:22:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:22:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-22 14:22:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-22 14:22:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-22 14:22:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-22 14:22:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure or51132_set_ts_param [2021-12-22 14:22:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure or51132_set_ts_param [2021-12-22 14:22:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_probe [2021-12-22 14:22:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_probe [2021-12-22 14:22:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_get_frontend [2021-12-22 14:22:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_get_frontend [2021-12-22 14:22:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_reset_device [2021-12-22 14:22:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_reset_device [2021-12-22 14:22:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-22 14:22:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2021-12-22 14:22:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:22:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_dual_demod_init [2021-12-22 14:22:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_dual_demod_init [2021-12-22 14:22:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:22:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_pro_demod_init [2021-12-22 14:22:25,435 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_pro_demod_init [2021-12-22 14:22:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_bandw [2021-12-22 14:22:25,436 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_bandw [2021-12-22 14:22:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure cx24123_set_ts_param [2021-12-22 14:22:25,436 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24123_set_ts_param [2021-12-22 14:22:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:22:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:22:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-22 14:22:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-22 14:22:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure lgdt330x_set_ts_param [2021-12-22 14:22:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure lgdt330x_set_ts_param [2021-12-22 14:22:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register [2021-12-22 14:22:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register [2021-12-22 14:22:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-22 14:22:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-22 14:22:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2021-12-22 14:22:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2021-12-22 14:22:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_dealloc_frontends [2021-12-22 14:22:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_dealloc_frontends [2021-12-22 14:22:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-22 14:22:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-22 14:22:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:22:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-22 14:22:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-22 14:22:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:22:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:22:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:22:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:22:26,331 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:22:26,334 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:22:33,695 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:22:33,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:22:33,710 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:22:33,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:22:33 BoogieIcfgContainer [2021-12-22 14:22:33,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:22:33,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:22:33,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:22:33,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:22:33,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:22:22" (1/3) ... [2021-12-22 14:22:33,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bad1e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:22:33, skipping insertion in model container [2021-12-22 14:22:33,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:22:24" (2/3) ... [2021-12-22 14:22:33,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bad1e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:22:33, skipping insertion in model container [2021-12-22 14:22:33,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:22:33" (3/3) ... [2021-12-22 14:22:33,722 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2021-12-22 14:22:33,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:22:33,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:22:33,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:22:33,812 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:22:33,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:22:33,880 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) [2021-12-22 14:22:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 14:22:33,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:33,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:22:33,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 983380094, now seen corresponding path program 1 times [2021-12-22 14:22:33,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078985193] [2021-12-22 14:22:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:33,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:22:34,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:34,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078985193] [2021-12-22 14:22:34,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078985193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:34,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:34,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:22:34,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038076784] [2021-12-22 14:22:34,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:34,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:22:34,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:22:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:22:34,506 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) [2021-12-22 14:22:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:34,879 INFO L93 Difference]: Finished difference Result 5574 states and 8588 transitions. [2021-12-22 14:22:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:22:34,882 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 [2021-12-22 14:22:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:34,923 INFO L225 Difference]: With dead ends: 5574 [2021-12-22 14:22:34,923 INFO L226 Difference]: Without dead ends: 3640 [2021-12-22 14:22:34,940 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 [2021-12-22 14:22:34,945 INFO L933 BasicCegarLoop]: 3494 mSDtfsCounter, 2902 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 6158 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 [2021-12-22 14:22:34,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2902 Valid, 6158 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:22:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-12-22 14:22:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3637. [2021-12-22 14:22:35,361 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) [2021-12-22 14:22:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5575 transitions. [2021-12-22 14:22:35,384 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5575 transitions. Word has length 14 [2021-12-22 14:22:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:35,384 INFO L470 AbstractCegarLoop]: Abstraction has 3637 states and 5575 transitions. [2021-12-22 14:22:35,385 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) [2021-12-22 14:22:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5575 transitions. [2021-12-22 14:22:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 14:22:35,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:35,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:22:35,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:22:35,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash 418913757, now seen corresponding path program 1 times [2021-12-22 14:22:35,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:35,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39042079] [2021-12-22 14:22:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:35,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:22:35,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:35,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39042079] [2021-12-22 14:22:35,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39042079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:35,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:35,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:22:35,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409336363] [2021-12-22 14:22:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:35,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:22:35,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:22:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:22:35,672 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) [2021-12-22 14:22:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:35,807 INFO L93 Difference]: Finished difference Result 3639 states and 5576 transitions. [2021-12-22 14:22:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:22:35,808 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 [2021-12-22 14:22:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:35,829 INFO L225 Difference]: With dead ends: 3639 [2021-12-22 14:22:35,829 INFO L226 Difference]: Without dead ends: 3636 [2021-12-22 14:22:35,836 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 [2021-12-22 14:22:35,837 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 [2021-12-22 14:22:35,838 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] [2021-12-22 14:22:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2021-12-22 14:22:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3636. [2021-12-22 14:22:36,035 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) [2021-12-22 14:22:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5573 transitions. [2021-12-22 14:22:36,137 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5573 transitions. Word has length 15 [2021-12-22 14:22:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:36,138 INFO L470 AbstractCegarLoop]: Abstraction has 3636 states and 5573 transitions. [2021-12-22 14:22:36,138 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) [2021-12-22 14:22:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5573 transitions. [2021-12-22 14:22:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 14:22:36,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:36,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:22:36,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:22:36,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash 100331361, now seen corresponding path program 1 times [2021-12-22 14:22:36,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:36,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457106232] [2021-12-22 14:22:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:36,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:22:36,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457106232] [2021-12-22 14:22:36,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457106232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:36,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:36,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:22:36,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500484537] [2021-12-22 14:22:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:36,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:22:36,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:22:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:22:36,389 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) [2021-12-22 14:22:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:36,520 INFO L93 Difference]: Finished difference Result 3638 states and 5574 transitions. [2021-12-22 14:22:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:22:36,523 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 [2021-12-22 14:22:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:36,544 INFO L225 Difference]: With dead ends: 3638 [2021-12-22 14:22:36,544 INFO L226 Difference]: Without dead ends: 3635 [2021-12-22 14:22:36,547 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 [2021-12-22 14:22:36,553 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 [2021-12-22 14:22:36,553 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] [2021-12-22 14:22:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-12-22 14:22:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2021-12-22 14:22:36,725 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) [2021-12-22 14:22:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5571 transitions. [2021-12-22 14:22:36,743 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5571 transitions. Word has length 16 [2021-12-22 14:22:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:36,743 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 5571 transitions. [2021-12-22 14:22:36,744 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) [2021-12-22 14:22:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5571 transitions. [2021-12-22 14:22:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 14:22:36,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:36,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:22:36,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:22:36,745 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783456, now seen corresponding path program 1 times [2021-12-22 14:22:36,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:36,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617595091] [2021-12-22 14:22:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:36,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:22:37,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617595091] [2021-12-22 14:22:37,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617595091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:37,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:37,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:22:37,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969089506] [2021-12-22 14:22:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:37,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:22:37,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:22:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:22:37,034 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) [2021-12-22 14:22:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:37,160 INFO L93 Difference]: Finished difference Result 3637 states and 5572 transitions. [2021-12-22 14:22:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:22:37,161 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 [2021-12-22 14:22:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:37,184 INFO L225 Difference]: With dead ends: 3637 [2021-12-22 14:22:37,184 INFO L226 Difference]: Without dead ends: 3634 [2021-12-22 14:22:37,187 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 [2021-12-22 14:22:37,193 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 [2021-12-22 14:22:37,194 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] [2021-12-22 14:22:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2021-12-22 14:22:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2021-12-22 14:22:37,393 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) [2021-12-22 14:22:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5569 transitions. [2021-12-22 14:22:37,413 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5569 transitions. Word has length 17 [2021-12-22 14:22:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:37,413 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 5569 transitions. [2021-12-22 14:22:37,414 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) [2021-12-22 14:22:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5569 transitions. [2021-12-22 14:22:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 14:22:37,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:37,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:22:37,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:22:37,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1894335044, now seen corresponding path program 1 times [2021-12-22 14:22:37,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094228563] [2021-12-22 14:22:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:37,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:22:37,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:37,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094228563] [2021-12-22 14:22:37,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094228563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:37,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:37,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:22:37,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986284031] [2021-12-22 14:22:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:37,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:22:37,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:22:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:22:37,671 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) [2021-12-22 14:22:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:37,809 INFO L93 Difference]: Finished difference Result 3636 states and 5570 transitions. [2021-12-22 14:22:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:22:37,813 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 [2021-12-22 14:22:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:37,835 INFO L225 Difference]: With dead ends: 3636 [2021-12-22 14:22:37,835 INFO L226 Difference]: Without dead ends: 3623 [2021-12-22 14:22:37,838 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 [2021-12-22 14:22:37,839 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 [2021-12-22 14:22:37,839 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] [2021-12-22 14:22:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2021-12-22 14:22:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2021-12-22 14:22:38,076 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) [2021-12-22 14:22:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5554 transitions. [2021-12-22 14:22:38,093 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5554 transitions. Word has length 18 [2021-12-22 14:22:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 5554 transitions. [2021-12-22 14:22:38,094 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) [2021-12-22 14:22:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5554 transitions. [2021-12-22 14:22:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-22 14:22:38,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:38,111 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] [2021-12-22 14:22:38,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:22:38,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -400911686, now seen corresponding path program 1 times [2021-12-22 14:22:38,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:38,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810892684] [2021-12-22 14:22:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:38,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:22:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:22:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:22:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 14:22:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 14:22:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 14:22:38,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:38,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810892684] [2021-12-22 14:22:38,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810892684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:38,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:38,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:22:38,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574071684] [2021-12-22 14:22:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:38,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:22:38,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:22:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:22:38,573 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) [2021-12-22 14:22:41,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:43,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:44,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:48,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:50,489 INFO L93 Difference]: Finished difference Result 7333 states and 11735 transitions. [2021-12-22 14:22:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:22:50,493 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 [2021-12-22 14:22:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:50,519 INFO L225 Difference]: With dead ends: 7333 [2021-12-22 14:22:50,519 INFO L226 Difference]: Without dead ends: 3718 [2021-12-22 14:22:50,533 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 [2021-12-22 14:22:50,535 INFO L933 BasicCegarLoop]: 2970 mSDtfsCounter, 297 mSDsluCounter, 7236 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:22:50,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 10206 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-12-22 14:22:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2021-12-22 14:22:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3630. [2021-12-22 14:22:50,819 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) [2021-12-22 14:22:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5561 transitions. [2021-12-22 14:22:50,837 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5561 transitions. Word has length 137 [2021-12-22 14:22:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:50,839 INFO L470 AbstractCegarLoop]: Abstraction has 3630 states and 5561 transitions. [2021-12-22 14:22:50,839 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) [2021-12-22 14:22:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5561 transitions. [2021-12-22 14:22:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-22 14:22:50,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:50,851 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] [2021-12-22 14:22:50,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:22:50,852 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 409251297, now seen corresponding path program 1 times [2021-12-22 14:22:50,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:50,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059140477] [2021-12-22 14:22:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:50,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:22:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:22:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:22:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:22:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:22:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:22:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 14:22:51,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:51,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059140477] [2021-12-22 14:22:51,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059140477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:51,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:51,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:22:51,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813524549] [2021-12-22 14:22:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:51,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:22:51,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:51,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:22:51,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:22:51,266 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) [2021-12-22 14:22:52,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:54,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:58,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:23:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:23:00,997 INFO L93 Difference]: Finished difference Result 7327 states and 11730 transitions. [2021-12-22 14:23:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:23:00,998 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 [2021-12-22 14:23:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:23:01,022 INFO L225 Difference]: With dead ends: 7327 [2021-12-22 14:23:01,023 INFO L226 Difference]: Without dead ends: 3705 [2021-12-22 14:23:01,036 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 [2021-12-22 14:23:01,037 INFO L933 BasicCegarLoop]: 2936 mSDtfsCounter, 272 mSDsluCounter, 4368 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 592 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:23:01,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 7304 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 845 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-12-22 14:23:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-12-22 14:23:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3632. [2021-12-22 14:23:01,309 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) [2021-12-22 14:23:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5563 transitions. [2021-12-22 14:23:01,325 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5563 transitions. Word has length 139 [2021-12-22 14:23:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:23:01,327 INFO L470 AbstractCegarLoop]: Abstraction has 3632 states and 5563 transitions. [2021-12-22 14:23:01,327 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) [2021-12-22 14:23:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5563 transitions. [2021-12-22 14:23:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 14:23:01,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:23:01,333 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] [2021-12-22 14:23:01,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:23:01,334 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:23:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:23:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash -102740549, now seen corresponding path program 1 times [2021-12-22 14:23:01,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:23:01,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689058540] [2021-12-22 14:23:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:23:01,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:23:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:23:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:23:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:23:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:23:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 14:23:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:23:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 14:23:01,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:23:01,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689058540] [2021-12-22 14:23:01,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689058540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:23:01,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:23:01,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:23:01,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128420223] [2021-12-22 14:23:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:23:01,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:23:01,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:23:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:23:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:23:01,775 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) [2021-12-22 14:23:04,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:23:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:23:13,448 INFO L93 Difference]: Finished difference Result 5648 states and 9037 transitions. [2021-12-22 14:23:13,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:23:13,448 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 [2021-12-22 14:23:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:23:13,465 INFO L225 Difference]: With dead ends: 5648 [2021-12-22 14:23:13,465 INFO L226 Difference]: Without dead ends: 3695 [2021-12-22 14:23:13,473 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 [2021-12-22 14:23:13,474 INFO L933 BasicCegarLoop]: 5593 mSDtfsCounter, 2609 mSDsluCounter, 5831 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 11424 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:23:13,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3011 Valid, 11424 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2021-12-22 14:23:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-12-22 14:23:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3620. [2021-12-22 14:23:13,794 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) [2021-12-22 14:23:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5531 transitions. [2021-12-22 14:23:13,808 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5531 transitions. Word has length 141 [2021-12-22 14:23:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:23:13,810 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 5531 transitions. [2021-12-22 14:23:13,810 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) [2021-12-22 14:23:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5531 transitions. [2021-12-22 14:23:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-22 14:23:13,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:23:13,824 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] [2021-12-22 14:23:13,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:23:13,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:23:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:23:13,825 INFO L85 PathProgramCache]: Analyzing trace with hash -741859133, now seen corresponding path program 1 times [2021-12-22 14:23:13,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:23:13,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887046121] [2021-12-22 14:23:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:23:13,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:23:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:23:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:23:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:23:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:23:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 14:23:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:23:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 14:23:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-22 14:23:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-22 14:23:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:23:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:23:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-22 14:23:14,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:23:14,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887046121] [2021-12-22 14:23:14,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887046121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:23:14,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:23:14,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:23:14,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426613260] [2021-12-22 14:23:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:23:14,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:23:14,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:23:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:23:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:23:14,447 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) [2021-12-22 14:23:19,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:23:20,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []