./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:52:06,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:52:06,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:52:06,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:52:06,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:52:06,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:52:06,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:52:06,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:52:06,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:52:06,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:52:06,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:52:06,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:52:06,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:52:06,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:52:06,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:52:06,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:52:06,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:52:06,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:52:06,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:52:06,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:52:06,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:52:06,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:52:06,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:52:06,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:52:06,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:52:06,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:52:06,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:52:06,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:52:06,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:52:06,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:52:06,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:52:06,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:52:06,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:52:06,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:52:06,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:52:06,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:52:06,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:52:06,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:52:06,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:52:06,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:52:06,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:52:06,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:52:06,470 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:52:06,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:52:06,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:52:06,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:52:06,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:52:06,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:52:06,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:52:06,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:52:06,474 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:52:06,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:52:06,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:52:06,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:52:06,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:52:06,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:52:06,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:52:06,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:52:06,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:52:06,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:52:06,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:52:06,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:52:06,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:52:06,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:52:06,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:52:06,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:52:06,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:52:06,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2021-12-28 03:52:06,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:52:06,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:52:06,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:52:06,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:52:06,793 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:52:06,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-12-28 03:52:06,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1056a600a/7060d5c532e44ce9bbcd78f0a96bf0ce/FLAG5cab94abd [2021-12-28 03:52:07,634 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:52:07,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-12-28 03:52:07,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1056a600a/7060d5c532e44ce9bbcd78f0a96bf0ce/FLAG5cab94abd [2021-12-28 03:52:07,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1056a600a/7060d5c532e44ce9bbcd78f0a96bf0ce [2021-12-28 03:52:07,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:52:07,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:52:07,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:52:07,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:52:07,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:52:07,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:52:07" (1/1) ... [2021-12-28 03:52:07,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74eb79ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:07, skipping insertion in model container [2021-12-28 03:52:07,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:52:07" (1/1) ... [2021-12-28 03:52:07,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:52:08,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:52:09,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-12-28 03:52:09,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:52:09,874 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:52:10,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-12-28 03:52:10,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:52:10,421 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:52:10,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10 WrapperNode [2021-12-28 03:52:10,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:52:10,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:52:10,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:52:10,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:52:10,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:10,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:10,842 INFO L137 Inliner]: procedures = 282, calls = 3066, calls flagged for inlining = 129, calls inlined = 120, statements flattened = 6764 [2021-12-28 03:52:10,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:52:10,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:52:10,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:52:10,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:52:10,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:10,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:10,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:10,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:11,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:11,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:11,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:11,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:52:11,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:52:11,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:52:11,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:52:11,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (1/1) ... [2021-12-28 03:52:11,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:52:11,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:52:11,240 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 03:52:11,252 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 03:52:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-28 03:52:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-12-28 03:52:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-12-28 03:52:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:52:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:52:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2021-12-28 03:52:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2021-12-28 03:52:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2021-12-28 03:52:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2021-12-28 03:52:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-28 03:52:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-28 03:52:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2021-12-28 03:52:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2021-12-28 03:52:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:52:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:52:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:52:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:52:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:52:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:52:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2021-12-28 03:52:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2021-12-28 03:52:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:52:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:52:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:52:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:52:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2021-12-28 03:52:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2021-12-28 03:52:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-28 03:52:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-28 03:52:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:52:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:52:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-12-28 03:52:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-12-28 03:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2021-12-28 03:52:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2021-12-28 03:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2021-12-28 03:52:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2021-12-28 03:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:52:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2021-12-28 03:52:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2021-12-28 03:52:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:52:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2021-12-28 03:52:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2021-12-28 03:52:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2021-12-28 03:52:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2021-12-28 03:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2021-12-28 03:52:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2021-12-28 03:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-12-28 03:52:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-12-28 03:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2021-12-28 03:52:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2021-12-28 03:52:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-28 03:52:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-28 03:52:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-28 03:52:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-28 03:52:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-28 03:52:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-12-28 03:52:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-12-28 03:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2021-12-28 03:52:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2021-12-28 03:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2021-12-28 03:52:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2021-12-28 03:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:52:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-12-28 03:52:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-12-28 03:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2021-12-28 03:52:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2021-12-28 03:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2021-12-28 03:52:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2021-12-28 03:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2021-12-28 03:52:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2021-12-28 03:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-28 03:52:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-28 03:52:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:52:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:52:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:52:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:52:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2021-12-28 03:52:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2021-12-28 03:52:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 03:52:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 03:52:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:52:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:52:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2021-12-28 03:52:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2021-12-28 03:52:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2021-12-28 03:52:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2021-12-28 03:52:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:52:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:52:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:52:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2021-12-28 03:52:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2021-12-28 03:52:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:52:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:52:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2021-12-28 03:52:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2021-12-28 03:52:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:52:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2021-12-28 03:52:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2021-12-28 03:52:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:52:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2021-12-28 03:52:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2021-12-28 03:52:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2021-12-28 03:52:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2021-12-28 03:52:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2021-12-28 03:52:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2021-12-28 03:52:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2021-12-28 03:52:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2021-12-28 03:52:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:52:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:52:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-12-28 03:52:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-12-28 03:52:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2021-12-28 03:52:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2021-12-28 03:52:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2021-12-28 03:52:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2021-12-28 03:52:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-28 03:52:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-28 03:52:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:52:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:52:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2021-12-28 03:52:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2021-12-28 03:52:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:52:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:52:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:52:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:52:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:52:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:52:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:52:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2021-12-28 03:52:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2021-12-28 03:52:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:52:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 03:52:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 03:52:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:52:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2021-12-28 03:52:11,301 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2021-12-28 03:52:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-28 03:52:11,301 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-28 03:52:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:52:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:52:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2021-12-28 03:52:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2021-12-28 03:52:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2021-12-28 03:52:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2021-12-28 03:52:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-28 03:52:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-28 03:52:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2021-12-28 03:52:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2021-12-28 03:52:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:52:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2021-12-28 03:52:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-28 03:52:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-28 03:52:11,303 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-28 03:52:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2021-12-28 03:52:11,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2021-12-28 03:52:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 03:52:11,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 03:52:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:52:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2021-12-28 03:52:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2021-12-28 03:52:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2021-12-28 03:52:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2021-12-28 03:52:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:52:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:52:12,117 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:52:12,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:52:19,175 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:52:19,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:52:19,190 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:52:19,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:52:19 BoogieIcfgContainer [2021-12-28 03:52:19,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:52:19,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:52:19,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:52:19,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:52:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:52:07" (1/3) ... [2021-12-28 03:52:19,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740e25a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:52:19, skipping insertion in model container [2021-12-28 03:52:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:10" (2/3) ... [2021-12-28 03:52:19,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740e25a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:52:19, skipping insertion in model container [2021-12-28 03:52:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:52:19" (3/3) ... [2021-12-28 03:52:19,199 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-12-28 03:52:19,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:52:19,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:52:19,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:52:19,250 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 03:52:19,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:52:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 2115 states, 1690 states have (on average 1.485207100591716) internal successors, (2510), 1712 states have internal predecessors, (2510), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2021-12-28 03:52:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:52:19,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:19,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:19,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:19,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash -652520665, now seen corresponding path program 1 times [2021-12-28 03:52:19,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820191429] [2021-12-28 03:52:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:19,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:19,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820191429] [2021-12-28 03:52:19,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820191429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:19,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:19,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:19,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989040802] [2021-12-28 03:52:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:19,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:19,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:19,784 INFO L87 Difference]: Start difference. First operand has 2115 states, 1690 states have (on average 1.485207100591716) internal successors, (2510), 1712 states have internal predecessors, (2510), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:19,985 INFO L93 Difference]: Finished difference Result 4222 states and 6502 transitions. [2021-12-28 03:52:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 03:52:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:20,017 INFO L225 Difference]: With dead ends: 4222 [2021-12-28 03:52:20,018 INFO L226 Difference]: Without dead ends: 2109 [2021-12-28 03:52:20,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:20,040 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 3183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:20,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3183 Valid, 3187 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-12-28 03:52:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2109. [2021-12-28 03:52:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 1686 states have (on average 1.4839857651245552) internal successors, (2502), 1706 states have internal predecessors, (2502), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-28 03:52:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 3184 transitions. [2021-12-28 03:52:20,171 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 3184 transitions. Word has length 18 [2021-12-28 03:52:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:20,173 INFO L470 AbstractCegarLoop]: Abstraction has 2109 states and 3184 transitions. [2021-12-28 03:52:20,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 3184 transitions. [2021-12-28 03:52:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:52:20,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:20,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:20,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:52:20,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 48543913, now seen corresponding path program 1 times [2021-12-28 03:52:20,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:20,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438050580] [2021-12-28 03:52:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:20,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:20,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:20,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438050580] [2021-12-28 03:52:20,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438050580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:20,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:20,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:20,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738273639] [2021-12-28 03:52:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:20,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:20,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:20,286 INFO L87 Difference]: Start difference. First operand 2109 states and 3184 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:20,380 INFO L93 Difference]: Finished difference Result 4211 states and 6359 transitions. [2021-12-28 03:52:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 03:52:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:20,397 INFO L225 Difference]: With dead ends: 4211 [2021-12-28 03:52:20,399 INFO L226 Difference]: Without dead ends: 2109 [2021-12-28 03:52:20,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:20,412 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 3177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:20,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3177 Valid, 3182 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-12-28 03:52:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2109. [2021-12-28 03:52:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 1686 states have (on average 1.4833926453143536) internal successors, (2501), 1706 states have internal predecessors, (2501), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-28 03:52:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 3183 transitions. [2021-12-28 03:52:20,554 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 3183 transitions. Word has length 18 [2021-12-28 03:52:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:20,555 INFO L470 AbstractCegarLoop]: Abstraction has 2109 states and 3183 transitions. [2021-12-28 03:52:20,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 3183 transitions. [2021-12-28 03:52:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:52:20,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:20,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:20,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:52:20,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash -344483097, now seen corresponding path program 1 times [2021-12-28 03:52:20,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:20,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491114967] [2021-12-28 03:52:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:20,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:20,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491114967] [2021-12-28 03:52:20,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491114967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:20,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:20,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:20,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068213366] [2021-12-28 03:52:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:20,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:20,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:20,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:20,675 INFO L87 Difference]: Start difference. First operand 2109 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:20,776 INFO L93 Difference]: Finished difference Result 2111 states and 3184 transitions. [2021-12-28 03:52:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 03:52:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:20,794 INFO L225 Difference]: With dead ends: 2111 [2021-12-28 03:52:20,794 INFO L226 Difference]: Without dead ends: 2108 [2021-12-28 03:52:20,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:20,804 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 3168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:20,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3168 Valid, 3180 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-12-28 03:52:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2021-12-28 03:52:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1686 states have (on average 1.482799525504152) internal successors, (2500), 1705 states have internal predecessors, (2500), 344 states have call successors, (344), 78 states have call predecessors, (344), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-28 03:52:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3181 transitions. [2021-12-28 03:52:20,895 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3181 transitions. Word has length 18 [2021-12-28 03:52:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:20,896 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 3181 transitions. [2021-12-28 03:52:20,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3181 transitions. [2021-12-28 03:52:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:52:20,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:20,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:20,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:52:20,898 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2089760103, now seen corresponding path program 1 times [2021-12-28 03:52:20,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:20,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075897987] [2021-12-28 03:52:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:20,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:21,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:21,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075897987] [2021-12-28 03:52:21,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075897987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:21,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:21,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:21,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114033126] [2021-12-28 03:52:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:21,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:21,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:21,064 INFO L87 Difference]: Start difference. First operand 2108 states and 3181 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:21,288 INFO L93 Difference]: Finished difference Result 6200 states and 9371 transitions. [2021-12-28 03:52:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-28 03:52:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:21,320 INFO L225 Difference]: With dead ends: 6200 [2021-12-28 03:52:21,321 INFO L226 Difference]: Without dead ends: 4133 [2021-12-28 03:52:21,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:21,341 INFO L933 BasicCegarLoop]: 5185 mSDtfsCounter, 3163 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 8243 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:21,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3163 Valid, 8243 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-12-28 03:52:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4128. [2021-12-28 03:52:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 3314 states have (on average 1.4846107423053712) internal successors, (4920), 3345 states have internal predecessors, (4920), 662 states have call successors, (662), 153 states have call predecessors, (662), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2021-12-28 03:52:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 6239 transitions. [2021-12-28 03:52:21,525 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 6239 transitions. Word has length 19 [2021-12-28 03:52:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:21,526 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 6239 transitions. [2021-12-28 03:52:21,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 6239 transitions. [2021-12-28 03:52:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:52:21,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:21,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:21,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:52:21,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash -358767574, now seen corresponding path program 1 times [2021-12-28 03:52:21,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:21,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385234722] [2021-12-28 03:52:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:21,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:21,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385234722] [2021-12-28 03:52:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385234722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:21,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:21,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:21,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042855645] [2021-12-28 03:52:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:21,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:21,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:21,660 INFO L87 Difference]: Start difference. First operand 4128 states and 6239 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:21,797 INFO L93 Difference]: Finished difference Result 4130 states and 6240 transitions. [2021-12-28 03:52:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-28 03:52:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:21,830 INFO L225 Difference]: With dead ends: 4130 [2021-12-28 03:52:21,830 INFO L226 Difference]: Without dead ends: 4127 [2021-12-28 03:52:21,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:21,835 INFO L933 BasicCegarLoop]: 3178 mSDtfsCounter, 3164 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:21,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 3178 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2021-12-28 03:52:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4127. [2021-12-28 03:52:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 3314 states have (on average 1.484308992154496) internal successors, (4919), 3344 states have internal predecessors, (4919), 661 states have call successors, (661), 153 states have call predecessors, (661), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2021-12-28 03:52:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 6237 transitions. [2021-12-28 03:52:22,004 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 6237 transitions. Word has length 20 [2021-12-28 03:52:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:22,005 INFO L470 AbstractCegarLoop]: Abstraction has 4127 states and 6237 transitions. [2021-12-28 03:52:22,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 6237 transitions. [2021-12-28 03:52:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 03:52:22,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:22,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:22,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:52:22,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1762398140, now seen corresponding path program 1 times [2021-12-28 03:52:22,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:22,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412664698] [2021-12-28 03:52:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:22,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:52:22,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:22,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412664698] [2021-12-28 03:52:22,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412664698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:22,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:22,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:52:22,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593265733] [2021-12-28 03:52:22,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:22,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:52:22,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:22,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:52:22,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:22,198 INFO L87 Difference]: Start difference. First operand 4127 states and 6237 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:22,325 INFO L93 Difference]: Finished difference Result 4199 states and 6295 transitions. [2021-12-28 03:52:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:52:22,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-28 03:52:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:22,349 INFO L225 Difference]: With dead ends: 4199 [2021-12-28 03:52:22,350 INFO L226 Difference]: Without dead ends: 4178 [2021-12-28 03:52:22,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:52:22,353 INFO L933 BasicCegarLoop]: 3180 mSDtfsCounter, 2999 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:22,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2999 Valid, 3365 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:52:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-12-28 03:52:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4176. [2021-12-28 03:52:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3357 states have (on average 1.4766160262138814) internal successors, (4957), 3385 states have internal predecessors, (4957), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (649), 643 states have call predecessors, (649), 643 states have call successors, (649) [2021-12-28 03:52:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6257 transitions. [2021-12-28 03:52:22,501 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6257 transitions. Word has length 21 [2021-12-28 03:52:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:22,502 INFO L470 AbstractCegarLoop]: Abstraction has 4176 states and 6257 transitions. [2021-12-28 03:52:22,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:52:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6257 transitions. [2021-12-28 03:52:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 03:52:22,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:22,508 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:52:22,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:52:22,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:22,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash 311089182, now seen corresponding path program 1 times [2021-12-28 03:52:22,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:22,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31009407] [2021-12-28 03:52:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:22,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:52:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:52:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:52:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:52:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:52:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:52:22,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31009407] [2021-12-28 03:52:22,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31009407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:22,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:22,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:52:22,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151624704] [2021-12-28 03:52:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:22,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:52:22,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:52:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:52:22,703 INFO L87 Difference]: Start difference. First operand 4176 states and 6257 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:52:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:26,837 INFO L93 Difference]: Finished difference Result 8302 states and 12449 transitions. [2021-12-28 03:52:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:52:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2021-12-28 03:52:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:26,871 INFO L225 Difference]: With dead ends: 8302 [2021-12-28 03:52:26,871 INFO L226 Difference]: Without dead ends: 4179 [2021-12-28 03:52:26,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:52:26,973 INFO L933 BasicCegarLoop]: 4069 mSDtfsCounter, 4476 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:26,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 7246 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-28 03:52:26,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2021-12-28 03:52:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4176. [2021-12-28 03:52:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3357 states have (on average 1.476020256181114) internal successors, (4955), 3385 states have internal predecessors, (4955), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (643), 643 states have call predecessors, (643), 640 states have call successors, (643) [2021-12-28 03:52:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 6249 transitions. [2021-12-28 03:52:27,116 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 6249 transitions. Word has length 61 [2021-12-28 03:52:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 4176 states and 6249 transitions. [2021-12-28 03:52:27,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:52:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 6249 transitions. [2021-12-28 03:52:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 03:52:27,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:27,121 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:52:27,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:52:27,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash -533382689, now seen corresponding path program 1 times [2021-12-28 03:52:27,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:27,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63217935] [2021-12-28 03:52:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:27,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:52:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:52:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:52:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:52:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:52:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:52:27,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63217935] [2021-12-28 03:52:27,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63217935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:27,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:27,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:52:27,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984973618] [2021-12-28 03:52:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:27,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:52:27,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:52:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:52:27,303 INFO L87 Difference]: Start difference. First operand 4176 states and 6249 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:52:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:34,230 INFO L93 Difference]: Finished difference Result 6230 states and 9444 transitions. [2021-12-28 03:52:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:52:34,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2021-12-28 03:52:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:34,268 INFO L225 Difference]: With dead ends: 6230 [2021-12-28 03:52:34,268 INFO L226 Difference]: Without dead ends: 5207 [2021-12-28 03:52:34,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:52:34,274 INFO L933 BasicCegarLoop]: 4139 mSDtfsCounter, 2802 mSDsluCounter, 10384 mSDsCounter, 0 mSdLazyCounter, 7432 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 14523 SdHoareTripleChecker+Invalid, 8066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 7432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:34,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2938 Valid, 14523 Invalid, 8066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 7432 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-28 03:52:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2021-12-28 03:52:34,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 3858. [2021-12-28 03:52:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3079 states have (on average 1.4624878207210132) internal successors, (4503), 3105 states have internal predecessors, (4503), 612 states have call successors, (612), 168 states have call predecessors, (612), 166 states have return successors, (606), 606 states have call predecessors, (606), 603 states have call successors, (606) [2021-12-28 03:52:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5721 transitions. [2021-12-28 03:52:34,457 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5721 transitions. Word has length 61 [2021-12-28 03:52:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5721 transitions. [2021-12-28 03:52:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:52:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5721 transitions. [2021-12-28 03:52:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 03:52:34,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:34,462 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:52:34,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:52:34,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1487077295, now seen corresponding path program 1 times [2021-12-28 03:52:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851999352] [2021-12-28 03:52:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:34,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:52:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:52:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:52:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 03:52:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:52:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:52:34,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851999352] [2021-12-28 03:52:34,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851999352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:34,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:34,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:52:34,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929026736] [2021-12-28 03:52:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:34,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:52:34,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:52:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:52:34,652 INFO L87 Difference]: Start difference. First operand 3858 states and 5721 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:52:38,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:52:42,702 WARN L534 Checker$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 03:52:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:44,440 INFO L93 Difference]: Finished difference Result 8734 states and 13155 transitions. [2021-12-28 03:52:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:52:44,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2021-12-28 03:52:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:44,466 INFO L225 Difference]: With dead ends: 8734 [2021-12-28 03:52:44,467 INFO L226 Difference]: Without dead ends: 4929 [2021-12-28 03:52:44,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:52:44,483 INFO L933 BasicCegarLoop]: 3040 mSDtfsCounter, 2485 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 4109 mSolverCounterSat, 1064 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 6480 SdHoareTripleChecker+Invalid, 5175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1064 IncrementalHoareTripleChecker+Valid, 4109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:44,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 6480 Invalid, 5175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1064 Valid, 4109 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-12-28 03:52:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2021-12-28 03:52:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4650. [2021-12-28 03:52:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 3730 states have (on average 1.470509383378016) internal successors, (5485), 3761 states have internal predecessors, (5485), 753 states have call successors, (753), 168 states have call predecessors, (753), 166 states have return successors, (748), 748 states have call predecessors, (748), 744 states have call successors, (748) [2021-12-28 03:52:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 6986 transitions. [2021-12-28 03:52:44,724 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 6986 transitions. Word has length 63 [2021-12-28 03:52:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:44,725 INFO L470 AbstractCegarLoop]: Abstraction has 4650 states and 6986 transitions. [2021-12-28 03:52:44,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:52:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 6986 transitions. [2021-12-28 03:52:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-28 03:52:44,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:44,735 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:52:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:52:44,736 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1372433969, now seen corresponding path program 1 times [2021-12-28 03:52:44,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:44,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617753346] [2021-12-28 03:52:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:44,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:52:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:52:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:52:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:52:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 03:52:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:52:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:52:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:52:44,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:44,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617753346] [2021-12-28 03:52:44,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617753346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:44,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:44,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:52:44,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640863811] [2021-12-28 03:52:44,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:44,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:52:44,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:52:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:52:44,954 INFO L87 Difference]: Start difference. First operand 4650 states and 6986 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 03:52:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:52:51,657 INFO L93 Difference]: Finished difference Result 7940 states and 12018 transitions. [2021-12-28 03:52:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:52:51,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-28 03:52:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:52:51,686 INFO L225 Difference]: With dead ends: 7940 [2021-12-28 03:52:51,686 INFO L226 Difference]: Without dead ends: 6458 [2021-12-28 03:52:51,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:52:51,698 INFO L933 BasicCegarLoop]: 4130 mSDtfsCounter, 3706 mSDsluCounter, 9444 mSDsCounter, 0 mSdLazyCounter, 7352 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 13574 SdHoareTripleChecker+Invalid, 8076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 7352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:52:51,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3842 Valid, 13574 Invalid, 8076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 7352 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-12-28 03:52:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6458 states. [2021-12-28 03:52:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6458 to 4648. [2021-12-28 03:52:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 3728 states have (on average 1.470225321888412) internal successors, (5481), 3759 states have internal predecessors, (5481), 753 states have call successors, (753), 168 states have call predecessors, (753), 166 states have return successors, (748), 748 states have call predecessors, (748), 744 states have call successors, (748) [2021-12-28 03:52:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 6982 transitions. [2021-12-28 03:52:51,959 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 6982 transitions. Word has length 78 [2021-12-28 03:52:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:52:51,959 INFO L470 AbstractCegarLoop]: Abstraction has 4648 states and 6982 transitions. [2021-12-28 03:52:51,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 03:52:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 6982 transitions. [2021-12-28 03:52:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-28 03:52:51,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:52:51,963 INFO L514 BasicCegarLoop]: trace histogram [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 03:52:51,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:52:51,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:52:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:52:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1415994438, now seen corresponding path program 1 times [2021-12-28 03:52:51,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:52:51,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770126792] [2021-12-28 03:52:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:52:51,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:52:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:52:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:52:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:52:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:52:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:52:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:52:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:52:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:52:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:52:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:52:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:52:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:52:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-28 03:52:52,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:52:52,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770126792] [2021-12-28 03:52:52,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770126792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:52:52,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:52:52,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:52:52,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047674386] [2021-12-28 03:52:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:52:52,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:52:52,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:52:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:52:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:52:52,202 INFO L87 Difference]: Start difference. First operand 4648 states and 6982 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 03:52:56,840 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 03:53:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:01,613 INFO L93 Difference]: Finished difference Result 11680 states and 18036 transitions. [2021-12-28 03:53:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:53:01,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 82 [2021-12-28 03:53:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:01,650 INFO L225 Difference]: With dead ends: 11680 [2021-12-28 03:53:01,650 INFO L226 Difference]: Without dead ends: 7085 [2021-12-28 03:53:01,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:53:01,669 INFO L933 BasicCegarLoop]: 3832 mSDtfsCounter, 3555 mSDsluCounter, 6440 mSDsCounter, 0 mSdLazyCounter, 5937 mSolverCounterSat, 1579 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 10272 SdHoareTripleChecker+Invalid, 7517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1579 IncrementalHoareTripleChecker+Valid, 5937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:01,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 10272 Invalid, 7517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1579 Valid, 5937 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-12-28 03:53:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2021-12-28 03:53:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 6315. [2021-12-28 03:53:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 5114 states have (on average 1.4892452092295658) internal successors, (7616), 5144 states have internal predecessors, (7616), 1034 states have call successors, (1034), 168 states have call predecessors, (1034), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2021-12-28 03:53:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 9683 transitions. [2021-12-28 03:53:02,017 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 9683 transitions. Word has length 82 [2021-12-28 03:53:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:02,017 INFO L470 AbstractCegarLoop]: Abstraction has 6315 states and 9683 transitions. [2021-12-28 03:53:02,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 03:53:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 9683 transitions. [2021-12-28 03:53:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 03:53:02,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:02,021 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:53:02,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:53:02,022 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1970657750, now seen corresponding path program 1 times [2021-12-28 03:53:02,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:02,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938745966] [2021-12-28 03:53:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:02,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:53:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:53:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:53:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:53:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:53:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 03:53:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:53:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:53:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:53:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:53:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-28 03:53:02,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938745966] [2021-12-28 03:53:02,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938745966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:02,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:02,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:02,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37452690] [2021-12-28 03:53:02,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:02,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:02,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:02,212 INFO L87 Difference]: Start difference. First operand 6315 states and 9683 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)