./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9e6cb9575d01b247a38f631016ebb8c3cacd422c61aaebbf8be9e6e4657d498f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:18:05,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:18:05,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:18:05,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:18:05,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:18:05,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:18:05,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:18:05,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:18:05,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:18:05,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:18:05,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:18:05,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:18:05,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:18:05,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:18:05,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:18:05,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:18:05,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:18:05,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:18:05,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:18:05,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:18:05,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:18:05,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:18:05,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:18:05,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:18:05,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:18:05,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:18:05,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:18:05,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:18:05,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:18:05,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:18:05,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:18:05,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:18:05,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:18:05,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:18:05,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:18:05,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:18:05,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:18:05,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:18:05,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:18:05,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:18:05,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:18:05,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:18:05,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:18:05,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:18:05,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:18:05,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:18:05,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:18:05,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:18:05,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:18:05,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:18:05,578 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:18:05,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:18:05,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:18:05,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:18:05,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:18:05,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:18:05,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:18:05,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:18:05,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:18:05,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:18:05,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:18:05,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e6cb9575d01b247a38f631016ebb8c3cacd422c61aaebbf8be9e6e4657d498f [2021-12-28 04:18:05,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:18:05,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:18:05,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:18:05,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:18:05,892 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:18:05,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2021-12-28 04:18:05,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9a92e6e/3370186f22da4da682746a4bacd280d7/FLAG964eb3619 [2021-12-28 04:18:06,509 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:18:06,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2021-12-28 04:18:06,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9a92e6e/3370186f22da4da682746a4bacd280d7/FLAG964eb3619 [2021-12-28 04:18:06,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9a92e6e/3370186f22da4da682746a4bacd280d7 [2021-12-28 04:18:06,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:18:06,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:18:06,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:18:06,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:18:06,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:18:06,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:18:06" (1/1) ... [2021-12-28 04:18:06,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109fbced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:06, skipping insertion in model container [2021-12-28 04:18:06,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:18:06" (1/1) ... [2021-12-28 04:18:06,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:18:07,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:18:07,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i[172920,172933] [2021-12-28 04:18:07,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:18:07,997 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:18:08,196 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i[172920,172933] [2021-12-28 04:18:08,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:18:08,276 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:18:08,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08 WrapperNode [2021-12-28 04:18:08,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:18:08,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:18:08,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:18:08,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:18:08,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,478 INFO L137 Inliner]: procedures = 262, calls = 892, calls flagged for inlining = 100, calls inlined = 92, statements flattened = 2312 [2021-12-28 04:18:08,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:18:08,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:18:08,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:18:08,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:18:08,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:18:08,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:18:08,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:18:08,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:18:08,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (1/1) ... [2021-12-28 04:18:08,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:18:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:18:08,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 04:18:08,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 04:18:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_read [2021-12-28 04:18:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_read [2021-12-28 04:18:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:18:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:18:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:18:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:18:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-28 04:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-28 04:18:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:18:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-12-28 04:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-12-28 04:18:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-12-28 04:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-12-28 04:18:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-28 04:18:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-28 04:18:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:18:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:18:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure of_property_read_u32 [2021-12-28 04:18:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure of_property_read_u32 [2021-12-28 04:18:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_tsc2005 [2021-12-28 04:18:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_tsc2005 [2021-12-28 04:18:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-28 04:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-28 04:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-12-28 04:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-12-28 04:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-12-28 04:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-12-28 04:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 04:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 04:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2021-12-28 04:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2021-12-28 04:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tsc2005 [2021-12-28 04:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tsc2005 [2021-12-28 04:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-28 04:18:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-28 04:18:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 04:18:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 04:18:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:18:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_stop_scan [2021-12-28 04:18:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_stop_scan [2021-12-28 04:18:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_write [2021-12-28 04:18:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_write [2021-12-28 04:18:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:18:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:18:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:18:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:18:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_cmd [2021-12-28 04:18:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_cmd [2021-12-28 04:18:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:18:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-28 04:18:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-28 04:18:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:18:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-28 04:18:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-28 04:18:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_esd_work [2021-12-28 04:18:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_esd_work [2021-12-28 04:18:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:18:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:18:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-12-28 04:18:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-12-28 04:18:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_suspend [2021-12-28 04:18:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_suspend [2021-12-28 04:18:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-28 04:18:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-28 04:18:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-12-28 04:18:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-12-28 04:18:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-28 04:18:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-28 04:18:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 04:18:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 04:18:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2021-12-28 04:18:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2021-12-28 04:18:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:18:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-28 04:18:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-28 04:18:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-28 04:18:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-28 04:18:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-12-28 04:18:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-12-28 04:18:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-12-28 04:18:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-12-28 04:18:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_4 [2021-12-28 04:18:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_4 [2021-12-28 04:18:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_start_scan [2021-12-28 04:18:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_start_scan [2021-12-28 04:18:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_resume [2021-12-28 04:18:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_resume [2021-12-28 04:18:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:18:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:18:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:18:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:18:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:18:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-12-28 04:18:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-12-28 04:18:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:18:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-12-28 04:18:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-12-28 04:18:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:18:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:18:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:18:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:18:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-28 04:18:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-28 04:18:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 04:18:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 04:18:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-28 04:18:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-28 04:18:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-28 04:18:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-28 04:18:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_setup_read [2021-12-28 04:18:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_setup_read [2021-12-28 04:18:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure __tsc2005_enable [2021-12-28 04:18:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __tsc2005_enable [2021-12-28 04:18:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-12-28 04:18:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-12-28 04:18:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tsc2005 [2021-12-28 04:18:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tsc2005 [2021-12-28 04:18:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_irq_thread [2021-12-28 04:18:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_irq_thread [2021-12-28 04:18:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure __tsc2005_disable [2021-12-28 04:18:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __tsc2005_disable [2021-12-28 04:18:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_update_pen_state [2021-12-28 04:18:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_update_pen_state [2021-12-28 04:18:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 04:18:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 04:18:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-28 04:18:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-28 04:18:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure tsc2005_set_reset [2021-12-28 04:18:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure tsc2005_set_reset [2021-12-28 04:18:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:18:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:18:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:18:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 04:18:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 04:18:09,140 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:18:09,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:18:09,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:18:14,718 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:18:14,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:18:14,728 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:18:14,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:18:14 BoogieIcfgContainer [2021-12-28 04:18:14,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:18:14,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:18:14,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:18:14,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:18:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:18:06" (1/3) ... [2021-12-28 04:18:14,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1d20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:18:14, skipping insertion in model container [2021-12-28 04:18:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:18:08" (2/3) ... [2021-12-28 04:18:14,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1d20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:18:14, skipping insertion in model container [2021-12-28 04:18:14,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:18:14" (3/3) ... [2021-12-28 04:18:14,736 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--touchscreen--tsc2005.ko-entry_point.cil.out.i [2021-12-28 04:18:14,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:18:14,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:18:14,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:18:14,791 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 04:18:14,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:18:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 891 states, 630 states have (on average 1.392063492063492) internal successors, (877), 661 states have internal predecessors, (877), 194 states have call successors, (194), 66 states have call predecessors, (194), 65 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2021-12-28 04:18:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 04:18:14,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:14,842 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:14,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1210140332, now seen corresponding path program 1 times [2021-12-28 04:18:14,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370150827] [2021-12-28 04:18:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:14,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:18:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:15,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370150827] [2021-12-28 04:18:15,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370150827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:15,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:15,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:18:15,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409105325] [2021-12-28 04:18:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:15,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:18:15,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:18:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:18:15,389 INFO L87 Difference]: Start difference. First operand has 891 states, 630 states have (on average 1.392063492063492) internal successors, (877), 661 states have internal predecessors, (877), 194 states have call successors, (194), 66 states have call predecessors, (194), 65 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:18:17,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:20,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:20,471 INFO L93 Difference]: Finished difference Result 1814 states and 2593 transitions. [2021-12-28 04:18:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:18:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 112 [2021-12-28 04:18:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:20,488 INFO L225 Difference]: With dead ends: 1814 [2021-12-28 04:18:20,488 INFO L226 Difference]: Without dead ends: 909 [2021-12-28 04:18:20,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:20,497 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 800 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 704 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:20,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 1767 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 290 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-12-28 04:18:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-12-28 04:18:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 872. [2021-12-28 04:18:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 625 states have (on average 1.3712) internal successors, (857), 642 states have internal predecessors, (857), 182 states have call successors, (182), 65 states have call predecessors, (182), 64 states have return successors, (175), 172 states have call predecessors, (175), 175 states have call successors, (175) [2021-12-28 04:18:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1214 transitions. [2021-12-28 04:18:20,570 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1214 transitions. Word has length 112 [2021-12-28 04:18:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:20,571 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1214 transitions. [2021-12-28 04:18:20,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:18:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1214 transitions. [2021-12-28 04:18:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 04:18:20,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:20,574 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:20,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:18:20,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1328328965, now seen corresponding path program 1 times [2021-12-28 04:18:20,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:20,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024674015] [2021-12-28 04:18:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:20,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:18:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:20,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:20,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024674015] [2021-12-28 04:18:20,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024674015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:20,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:20,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:18:20,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804803222] [2021-12-28 04:18:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:20,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:18:20,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:18:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:20,863 INFO L87 Difference]: Start difference. First operand 872 states and 1214 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:18:23,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:26,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-28 04:18:28,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:29,287 INFO L93 Difference]: Finished difference Result 2478 states and 3483 transitions. [2021-12-28 04:18:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:18:29,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 111 [2021-12-28 04:18:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:29,295 INFO L225 Difference]: With dead ends: 2478 [2021-12-28 04:18:29,295 INFO L226 Difference]: Without dead ends: 1623 [2021-12-28 04:18:29,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:18:29,298 INFO L933 BasicCegarLoop]: 1296 mSDtfsCounter, 1786 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 839 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:29,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 4004 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [839 Valid, 1265 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2021-12-28 04:18:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-12-28 04:18:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1560. [2021-12-28 04:18:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1134 states have (on average 1.3738977072310405) internal successors, (1558), 1166 states have internal predecessors, (1558), 307 states have call successors, (307), 122 states have call predecessors, (307), 118 states have return successors, (313), 284 states have call predecessors, (313), 299 states have call successors, (313) [2021-12-28 04:18:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2178 transitions. [2021-12-28 04:18:29,381 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2178 transitions. Word has length 111 [2021-12-28 04:18:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:29,382 INFO L470 AbstractCegarLoop]: Abstraction has 1560 states and 2178 transitions. [2021-12-28 04:18:29,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:18:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2178 transitions. [2021-12-28 04:18:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 04:18:29,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:29,384 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:29,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:18:29,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash 70767275, now seen corresponding path program 1 times [2021-12-28 04:18:29,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:29,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666337614] [2021-12-28 04:18:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:29,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:29,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:29,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666337614] [2021-12-28 04:18:29,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666337614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:29,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:29,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:18:29,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325598940] [2021-12-28 04:18:29,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:29,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:18:29,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:18:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:29,570 INFO L87 Difference]: Start difference. First operand 1560 states and 2178 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:18:31,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:35,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:35,774 INFO L93 Difference]: Finished difference Result 4677 states and 6573 transitions. [2021-12-28 04:18:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:18:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 111 [2021-12-28 04:18:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:35,789 INFO L225 Difference]: With dead ends: 4677 [2021-12-28 04:18:35,789 INFO L226 Difference]: Without dead ends: 3135 [2021-12-28 04:18:35,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:18:35,795 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 2033 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 975 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:35,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 3469 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [975 Valid, 1112 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-28 04:18:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2021-12-28 04:18:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2982. [2021-12-28 04:18:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2178 states have (on average 1.379706152433425) internal successors, (3005), 2236 states have internal predecessors, (3005), 577 states have call successors, (577), 232 states have call predecessors, (577), 226 states have return successors, (597), 538 states have call predecessors, (597), 569 states have call successors, (597) [2021-12-28 04:18:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4179 transitions. [2021-12-28 04:18:35,899 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4179 transitions. Word has length 111 [2021-12-28 04:18:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:35,901 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 4179 transitions. [2021-12-28 04:18:35,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:18:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4179 transitions. [2021-12-28 04:18:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 04:18:35,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:35,904 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:35,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:18:35,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1520234092, now seen corresponding path program 1 times [2021-12-28 04:18:35,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679960452] [2021-12-28 04:18:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:35,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:36,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:36,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679960452] [2021-12-28 04:18:36,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679960452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:36,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:36,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:18:36,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663908080] [2021-12-28 04:18:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:36,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:18:36,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:18:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:36,100 INFO L87 Difference]: Start difference. First operand 2982 states and 4179 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:38,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:41,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:41,439 INFO L93 Difference]: Finished difference Result 3118 states and 4389 transitions. [2021-12-28 04:18:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:18:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2021-12-28 04:18:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:41,452 INFO L225 Difference]: With dead ends: 3118 [2021-12-28 04:18:41,453 INFO L226 Difference]: Without dead ends: 3115 [2021-12-28 04:18:41,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:18:41,455 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 1529 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 568 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:41,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 2308 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 513 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2021-12-28 04:18:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2021-12-28 04:18:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3002. [2021-12-28 04:18:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2192 states have (on average 1.3768248175182483) internal successors, (3018), 2249 states have internal predecessors, (3018), 578 states have call successors, (578), 237 states have call predecessors, (578), 231 states have return successors, (599), 540 states have call predecessors, (599), 571 states have call successors, (599) [2021-12-28 04:18:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4195 transitions. [2021-12-28 04:18:41,546 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4195 transitions. Word has length 112 [2021-12-28 04:18:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:41,546 INFO L470 AbstractCegarLoop]: Abstraction has 3002 states and 4195 transitions. [2021-12-28 04:18:41,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4195 transitions. [2021-12-28 04:18:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 04:18:41,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:41,548 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:41,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:18:41,548 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash 117119914, now seen corresponding path program 1 times [2021-12-28 04:18:41,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:41,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294073039] [2021-12-28 04:18:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:41,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:41,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:41,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294073039] [2021-12-28 04:18:41,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294073039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:41,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:41,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:18:41,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175583839] [2021-12-28 04:18:41,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:41,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:18:41,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:41,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:18:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:41,785 INFO L87 Difference]: Start difference. First operand 3002 states and 4195 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:44,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:46,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:47,215 INFO L93 Difference]: Finished difference Result 3117 states and 4386 transitions. [2021-12-28 04:18:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:18:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2021-12-28 04:18:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:47,229 INFO L225 Difference]: With dead ends: 3117 [2021-12-28 04:18:47,229 INFO L226 Difference]: Without dead ends: 3114 [2021-12-28 04:18:47,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:18:47,233 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1526 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 565 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:47,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1612 Valid, 2845 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 710 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2021-12-28 04:18:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-12-28 04:18:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3001. [2021-12-28 04:18:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2192 states have (on average 1.3759124087591241) internal successors, (3016), 2248 states have internal predecessors, (3016), 577 states have call successors, (577), 237 states have call predecessors, (577), 231 states have return successors, (599), 540 states have call predecessors, (599), 571 states have call successors, (599) [2021-12-28 04:18:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4192 transitions. [2021-12-28 04:18:47,315 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4192 transitions. Word has length 113 [2021-12-28 04:18:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:47,316 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 4192 transitions. [2021-12-28 04:18:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4192 transitions. [2021-12-28 04:18:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 04:18:47,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:47,319 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:47,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:18:47,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash -664508585, now seen corresponding path program 1 times [2021-12-28 04:18:47,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123520937] [2021-12-28 04:18:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:47,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:47,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:47,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123520937] [2021-12-28 04:18:47,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123520937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:47,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:47,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:18:47,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48159300] [2021-12-28 04:18:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:47,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:18:47,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:18:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:18:47,494 INFO L87 Difference]: Start difference. First operand 3001 states and 4192 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:49,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:52,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:18:52,544 INFO L93 Difference]: Finished difference Result 3116 states and 4383 transitions. [2021-12-28 04:18:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:18:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2021-12-28 04:18:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:18:52,556 INFO L225 Difference]: With dead ends: 3116 [2021-12-28 04:18:52,557 INFO L226 Difference]: Without dead ends: 3105 [2021-12-28 04:18:52,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:18:52,559 INFO L933 BasicCegarLoop]: 1124 mSDtfsCounter, 1801 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 797 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:18:52,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 1740 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 328 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-12-28 04:18:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2021-12-28 04:18:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2992. [2021-12-28 04:18:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2184 states have (on average 1.3754578754578755) internal successors, (3004), 2239 states have internal predecessors, (3004), 576 states have call successors, (576), 237 states have call predecessors, (576), 231 states have return successors, (599), 540 states have call predecessors, (599), 571 states have call successors, (599) [2021-12-28 04:18:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4179 transitions. [2021-12-28 04:18:52,670 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4179 transitions. Word has length 114 [2021-12-28 04:18:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:18:52,670 INFO L470 AbstractCegarLoop]: Abstraction has 2992 states and 4179 transitions. [2021-12-28 04:18:52,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:18:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4179 transitions. [2021-12-28 04:18:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 04:18:52,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:18:52,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:18:52,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:18:52,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:18:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:18:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1831667998, now seen corresponding path program 1 times [2021-12-28 04:18:52,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:18:52,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332646190] [2021-12-28 04:18:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:18:52,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:18:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:18:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:18:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:18:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:18:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:18:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:18:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:18:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:18:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:18:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:18:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 04:18:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:18:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:18:52,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:18:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332646190] [2021-12-28 04:18:52,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332646190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:18:52,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:18:52,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 04:18:52,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710343238] [2021-12-28 04:18:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:18:52,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:18:52,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:18:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:18:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:18:52,906 INFO L87 Difference]: Start difference. First operand 2992 states and 4179 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:18:55,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:18:59,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:00,514 INFO L93 Difference]: Finished difference Result 3301 states and 4600 transitions. [2021-12-28 04:19:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 04:19:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-12-28 04:19:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:00,537 INFO L225 Difference]: With dead ends: 3301 [2021-12-28 04:19:00,537 INFO L226 Difference]: Without dead ends: 3009 [2021-12-28 04:19:00,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-28 04:19:00,539 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 899 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 3649 mSolverCounterSat, 717 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 5362 SdHoareTripleChecker+Invalid, 4368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 3649 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:00,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 5362 Invalid, 4368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 3649 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-12-28 04:19:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2021-12-28 04:19:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 2880. [2021-12-28 04:19:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2114 states have (on average 1.378429517502365) internal successors, (2914), 2167 states have internal predecessors, (2914), 546 states have call successors, (546), 224 states have call predecessors, (546), 219 states have return successors, (570), 512 states have call predecessors, (570), 542 states have call successors, (570) [2021-12-28 04:19:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4030 transitions. [2021-12-28 04:19:00,653 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4030 transitions. Word has length 133 [2021-12-28 04:19:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:00,653 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4030 transitions. [2021-12-28 04:19:00,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:19:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4030 transitions. [2021-12-28 04:19:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 04:19:00,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:00,656 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:00,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 04:19:00,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 921546124, now seen corresponding path program 1 times [2021-12-28 04:19:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:00,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578766189] [2021-12-28 04:19:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:00,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:19:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:19:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:19:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:19:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:19:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 04:19:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:19:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:19:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:00,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578766189] [2021-12-28 04:19:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578766189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:00,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:00,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:19:00,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900010850] [2021-12-28 04:19:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:19:00,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:19:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:19:00,843 INFO L87 Difference]: Start difference. First operand 2880 states and 4030 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:19:03,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:06,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:07,330 INFO L93 Difference]: Finished difference Result 6055 states and 8478 transitions. [2021-12-28 04:19:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 04:19:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2021-12-28 04:19:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:07,343 INFO L225 Difference]: With dead ends: 6055 [2021-12-28 04:19:07,343 INFO L226 Difference]: Without dead ends: 3193 [2021-12-28 04:19:07,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:19:07,350 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 2142 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 1306 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:07,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 3946 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 1479 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-12-28 04:19:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-12-28 04:19:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3020. [2021-12-28 04:19:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 2213 states have (on average 1.3741527338454587) internal successors, (3041), 2263 states have internal predecessors, (3041), 570 states have call successors, (570), 240 states have call predecessors, (570), 236 states have return successors, (557), 542 states have call predecessors, (557), 547 states have call successors, (557) [2021-12-28 04:19:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 4168 transitions. [2021-12-28 04:19:07,471 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 4168 transitions. Word has length 135 [2021-12-28 04:19:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:07,472 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 4168 transitions. [2021-12-28 04:19:07,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:19:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 4168 transitions. [2021-12-28 04:19:07,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-28 04:19:07,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:07,477 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:07,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 04:19:07,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:07,478 INFO L85 PathProgramCache]: Analyzing trace with hash 421963720, now seen corresponding path program 1 times [2021-12-28 04:19:07,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:07,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031669413] [2021-12-28 04:19:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:07,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:19:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:19:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:19:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 04:19:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 04:19:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 04:19:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:19:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 04:19:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:19:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-28 04:19:07,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:07,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031669413] [2021-12-28 04:19:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031669413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:07,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:07,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 04:19:07,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692004029] [2021-12-28 04:19:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:07,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 04:19:07,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:07,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 04:19:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-28 04:19:07,812 INFO L87 Difference]: Start difference. First operand 3020 states and 4168 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:19:10,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:14,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:14,873 INFO L93 Difference]: Finished difference Result 3465 states and 4749 transitions. [2021-12-28 04:19:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 04:19:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2021-12-28 04:19:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:14,875 INFO L225 Difference]: With dead ends: 3465 [2021-12-28 04:19:14,875 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 04:19:14,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-12-28 04:19:14,881 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 1585 mSDsluCounter, 3695 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 1361 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 4771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1361 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:14,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 4747 Invalid, 4771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1361 Valid, 3408 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-12-28 04:19:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 04:19:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 04:19:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 04:19:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 04:19:14,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 171 [2021-12-28 04:19:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:14,883 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 04:19:14,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:19:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 04:19:14,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 04:19:14,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 04:19:14,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 04:19:14,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.