./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 791161d1 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-?-791161d [2022-07-22 23:34:26,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:34:26,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:34:26,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:34:26,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:34:26,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:34:26,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:34:26,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:34:26,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:34:26,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:34:26,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:34:26,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:34:26,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:34:26,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:34:26,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:34:26,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:34:26,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:34:26,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:34:26,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:34:26,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:34:26,521 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:34:26,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:34:26,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:34:26,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:34:26,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:34:26,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:34:26,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:34:26,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:34:26,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:34:26,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:34:26,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:34:26,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:34:26,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:34:26,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:34:26,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:34:26,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:34:26,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:34:26,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:34:26,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:34:26,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:34:26,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:34:26,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:34:26,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:34:26,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:34:26,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:34:26,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:34:26,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:34:26,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:34:26,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:34:26,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:34:26,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:34:26,575 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:34:26,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:34:26,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:34:26,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:34:26,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:34:26,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:34:26,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:34:26,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:34:26,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:34:26,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:34:26,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:34:26,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:34:26,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:34:26,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:34:26,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:34:26,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:34:26,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:34:26,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:34:26,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:34:26,580 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:34:26,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:34:26,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:34:26,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2022-07-22 23:34:26,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:34:26,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:34:26,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:34:26,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:34:26,863 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:34:26,865 INFO L432 ainManager$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 [2022-07-22 23:34:26,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23f8a5ff6/5a6f06a55bc14749ad09a0780c4359b0/FLAG7ad3fa4b3 [2022-07-22 23:34:27,648 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:34:27,648 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 [2022-07-22 23:34:27,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23f8a5ff6/5a6f06a55bc14749ad09a0780c4359b0/FLAG7ad3fa4b3 [2022-07-22 23:34:27,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23f8a5ff6/5a6f06a55bc14749ad09a0780c4359b0 [2022-07-22 23:34:27,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:34:27,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:34:27,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:34:27,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:34:27,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:34:27,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:34:27" (1/1) ... [2022-07-22 23:34:27,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4719a6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:27, skipping insertion in model container [2022-07-22 23:34:27,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:34:27" (1/1) ... [2022-07-22 23:34:27,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:34:27,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:34:29,793 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] [2022-07-22 23:34:29,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:34:29,902 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:34:30,285 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] [2022-07-22 23:34:30,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:34:30,399 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:34:30,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30 WrapperNode [2022-07-22 23:34:30,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:34:30,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:34:30,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:34:30,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:34:30,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:30,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:30,786 INFO L137 Inliner]: procedures = 282, calls = 3066, calls flagged for inlining = 129, calls inlined = 120, statements flattened = 6882 [2022-07-22 23:34:30,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:34:30,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:34:30,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:34:30,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:34:30,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:30,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:30,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:30,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:31,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:31,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:31,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:31,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:34:31,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:34:31,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:34:31,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:34:31,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (1/1) ... [2022-07-22 23:34:31,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:34:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:34:31,445 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) [2022-07-22 23:34:31,465 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 [2022-07-22 23:34:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-22 23:34:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-07-22 23:34:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-07-22 23:34:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:34:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:34:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2022-07-22 23:34:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2022-07-22 23:34:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2022-07-22 23:34:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2022-07-22 23:34:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-22 23:34:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-22 23:34:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-22 23:34:31,485 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-22 23:34:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 23:34:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 23:34:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:34:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:34:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:34:31,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:34:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2022-07-22 23:34:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2022-07-22 23:34:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:34:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:34:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:34:31,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:34:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-22 23:34:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-22 23:34:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-22 23:34:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-22 23:34:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:34:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:34:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2022-07-22 23:34:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2022-07-22 23:34:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2022-07-22 23:34:31,489 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2022-07-22 23:34:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2022-07-22 23:34:31,489 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2022-07-22 23:34:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:34:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:34:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-22 23:34:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-22 23:34:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:34:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2022-07-22 23:34:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2022-07-22 23:34:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2022-07-22 23:34:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2022-07-22 23:34:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-22 23:34:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-22 23:34:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:34:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-07-22 23:34:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-07-22 23:34:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2022-07-22 23:34:31,492 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2022-07-22 23:34:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-22 23:34:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-22 23:34:31,493 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-22 23:34:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-22 23:34:31,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-22 23:34:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-22 23:34:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-22 23:34:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:34:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2022-07-22 23:34:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2022-07-22 23:34:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:34:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2022-07-22 23:34:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2022-07-22 23:34:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:34:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:34:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-22 23:34:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-22 23:34:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2022-07-22 23:34:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2022-07-22 23:34:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2022-07-22 23:34:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2022-07-22 23:34:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2022-07-22 23:34:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2022-07-22 23:34:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-07-22 23:34:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-07-22 23:34:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:34:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:34:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2022-07-22 23:34:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2022-07-22 23:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:34:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:34:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 23:34:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 23:34:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2022-07-22 23:34:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2022-07-22 23:34:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-07-22 23:34:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-07-22 23:34:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:34:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:34:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:34:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2022-07-22 23:34:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2022-07-22 23:34:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:34:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:34:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2022-07-22 23:34:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2022-07-22 23:34:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:34:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2022-07-22 23:34:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2022-07-22 23:34:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:34:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2022-07-22 23:34:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2022-07-22 23:34:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2022-07-22 23:34:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2022-07-22 23:34:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2022-07-22 23:34:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2022-07-22 23:34:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2022-07-22 23:34:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2022-07-22 23:34:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:34:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:34:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2022-07-22 23:34:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2022-07-22 23:34:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-22 23:34:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-22 23:34:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2022-07-22 23:34:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2022-07-22 23:34:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-22 23:34:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-22 23:34:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:34:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:34:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2022-07-22 23:34:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2022-07-22 23:34:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:34:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-22 23:34:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-22 23:34:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-22 23:34:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-22 23:34:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:34:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:34:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2022-07-22 23:34:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2022-07-22 23:34:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:34:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-22 23:34:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-22 23:34:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:34:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-07-22 23:34:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-07-22 23:34:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-22 23:34:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-22 23:34:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:34:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:34:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2022-07-22 23:34:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2022-07-22 23:34:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2022-07-22 23:34:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2022-07-22 23:34:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-22 23:34:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-22 23:34:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-22 23:34:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-22 23:34:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2022-07-22 23:34:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2022-07-22 23:34:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:34:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:34:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2022-07-22 23:34:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2022-07-22 23:34:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-22 23:34:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-22 23:34:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-07-22 23:34:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-07-22 23:34:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-07-22 23:34:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-07-22 23:34:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:34:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:34:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:34:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2022-07-22 23:34:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2022-07-22 23:34:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2022-07-22 23:34:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2022-07-22 23:34:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:34:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:34:32,423 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:34:32,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:34:39,819 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:34:39,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:34:39,846 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:34:39,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:34:39 BoogieIcfgContainer [2022-07-22 23:34:39,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:34:39,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:34:39,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:34:39,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:34:39,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:34:27" (1/3) ... [2022-07-22 23:34:39,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72047dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:34:39, skipping insertion in model container [2022-07-22 23:34:39,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:34:30" (2/3) ... [2022-07-22 23:34:39,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72047dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:34:39, skipping insertion in model container [2022-07-22 23:34:39,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:34:39" (3/3) ... [2022-07-22 23:34:39,861 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-07-22 23:34:39,873 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:34:39,875 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:34:39,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:34:39,969 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b52ccfa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@268d15a4 [2022-07-22 23:34:39,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:34:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 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) [2022-07-22 23:34:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 23:34:39,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:39,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:39,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash 426041223, now seen corresponding path program 1 times [2022-07-22 23:34:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291085030] [2022-07-22 23:34:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:40,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:40,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291085030] [2022-07-22 23:34:40,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291085030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:40,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:40,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7714396] [2022-07-22 23:34:40,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:40,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:40,470 INFO L87 Difference]: Start difference. First operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 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) [2022-07-22 23:34:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:40,650 INFO L93 Difference]: Finished difference Result 4356 states and 6772 transitions. [2022-07-22 23:34:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:40,656 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 [2022-07-22 23:34:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:40,691 INFO L225 Difference]: With dead ends: 4356 [2022-07-22 23:34:40,691 INFO L226 Difference]: Without dead ends: 2176 [2022-07-22 23:34:40,713 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:40,716 INFO L413 NwaCegarLoop]: 3295 mSDtfsCounter, 3291 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 3295 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 [2022-07-22 23:34:40,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 3295 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-07-22 23:34:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-07-22 23:34:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.488876212207644) internal successors, (2610), 1773 states have internal predecessors, (2610), 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) [2022-07-22 23:34:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3292 transitions. [2022-07-22 23:34:40,920 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3292 transitions. Word has length 18 [2022-07-22 23:34:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:40,921 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3292 transitions. [2022-07-22 23:34:40,922 INFO L496 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) [2022-07-22 23:34:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3292 transitions. [2022-07-22 23:34:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 23:34:40,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:40,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:40,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:34:40,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105801, now seen corresponding path program 1 times [2022-07-22 23:34:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:40,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073646989] [2022-07-22 23:34:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:41,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073646989] [2022-07-22 23:34:41,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073646989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:41,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:41,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571300241] [2022-07-22 23:34:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:41,129 INFO L87 Difference]: Start difference. First operand 2176 states and 3292 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) [2022-07-22 23:34:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:41,321 INFO L93 Difference]: Finished difference Result 4345 states and 6575 transitions. [2022-07-22 23:34:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:41,325 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 [2022-07-22 23:34:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:41,340 INFO L225 Difference]: With dead ends: 4345 [2022-07-22 23:34:41,340 INFO L226 Difference]: Without dead ends: 2176 [2022-07-22 23:34:41,347 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:41,349 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3285 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 3290 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 [2022-07-22 23:34:41,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 3290 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-07-22 23:34:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-07-22 23:34:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.4883057615516257) internal successors, (2609), 1773 states have internal predecessors, (2609), 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) [2022-07-22 23:34:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3291 transitions. [2022-07-22 23:34:41,447 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3291 transitions. Word has length 18 [2022-07-22 23:34:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:41,447 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3291 transitions. [2022-07-22 23:34:41,448 INFO L496 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) [2022-07-22 23:34:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3291 transitions. [2022-07-22 23:34:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 23:34:41,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:41,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:34:41,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash 734078791, now seen corresponding path program 1 times [2022-07-22 23:34:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:41,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354443306] [2022-07-22 23:34:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:41,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:41,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354443306] [2022-07-22 23:34:41,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354443306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:41,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:41,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23520692] [2022-07-22 23:34:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:41,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:41,622 INFO L87 Difference]: Start difference. First operand 2176 states and 3291 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) [2022-07-22 23:34:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:41,712 INFO L93 Difference]: Finished difference Result 2178 states and 3292 transitions. [2022-07-22 23:34:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:41,713 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 [2022-07-22 23:34:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:41,725 INFO L225 Difference]: With dead ends: 2178 [2022-07-22 23:34:41,725 INFO L226 Difference]: Without dead ends: 2175 [2022-07-22 23:34:41,728 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:41,729 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 3288 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 [2022-07-22 23:34:41,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 3288 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-07-22 23:34:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2022-07-22 23:34:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1753 states have (on average 1.4877353108956075) internal successors, (2608), 1772 states have internal predecessors, (2608), 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) [2022-07-22 23:34:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3289 transitions. [2022-07-22 23:34:41,811 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3289 transitions. Word has length 18 [2022-07-22 23:34:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:41,812 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3289 transitions. [2022-07-22 23:34:41,812 INFO L496 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) [2022-07-22 23:34:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3289 transitions. [2022-07-22 23:34:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 23:34:41,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:41,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:41,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:34:41,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1280897129, now seen corresponding path program 1 times [2022-07-22 23:34:41,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:41,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474921275] [2022-07-22 23:34:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:41,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474921275] [2022-07-22 23:34:41,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474921275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:41,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:41,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393181257] [2022-07-22 23:34:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:41,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:41,964 INFO L87 Difference]: Start difference. First operand 2175 states and 3289 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) [2022-07-22 23:34:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:42,161 INFO L93 Difference]: Finished difference Result 6401 states and 9695 transitions. [2022-07-22 23:34:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:42,162 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 [2022-07-22 23:34:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:42,191 INFO L225 Difference]: With dead ends: 6401 [2022-07-22 23:34:42,191 INFO L226 Difference]: Without dead ends: 4267 [2022-07-22 23:34:42,206 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:42,208 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 3271 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3271 SdHoareTripleChecker+Valid, 8567 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 [2022-07-22 23:34:42,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3271 Valid, 8567 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-07-22 23:34:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4262. [2022-07-22 23:34:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 3448 states have (on average 1.4895591647331787) internal successors, (5136), 3479 states have internal predecessors, (5136), 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) [2022-07-22 23:34:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6455 transitions. [2022-07-22 23:34:42,433 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6455 transitions. Word has length 19 [2022-07-22 23:34:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:42,434 INFO L495 AbstractCegarLoop]: Abstraction has 4262 states and 6455 transitions. [2022-07-22 23:34:42,434 INFO L496 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) [2022-07-22 23:34:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6455 transitions. [2022-07-22 23:34:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 23:34:42,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:42,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:34:42,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:42,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1052401290, now seen corresponding path program 1 times [2022-07-22 23:34:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:42,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679239838] [2022-07-22 23:34:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:42,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679239838] [2022-07-22 23:34:42,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679239838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:42,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:42,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570401098] [2022-07-22 23:34:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:42,552 INFO L87 Difference]: Start difference. First operand 4262 states and 6455 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) [2022-07-22 23:34:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:42,682 INFO L93 Difference]: Finished difference Result 4264 states and 6456 transitions. [2022-07-22 23:34:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:42,683 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 [2022-07-22 23:34:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:42,710 INFO L225 Difference]: With dead ends: 4264 [2022-07-22 23:34:42,711 INFO L226 Difference]: Without dead ends: 4261 [2022-07-22 23:34:42,714 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:42,715 INFO L413 NwaCegarLoop]: 3286 mSDtfsCounter, 3272 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 3286 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 [2022-07-22 23:34:42,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 3286 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2022-07-22 23:34:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4261. [2022-07-22 23:34:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 3448 states have (on average 1.4892691415313226) internal successors, (5135), 3478 states have internal predecessors, (5135), 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) [2022-07-22 23:34:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 6453 transitions. [2022-07-22 23:34:42,885 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 6453 transitions. Word has length 20 [2022-07-22 23:34:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:42,885 INFO L495 AbstractCegarLoop]: Abstraction has 4261 states and 6453 transitions. [2022-07-22 23:34:42,885 INFO L496 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) [2022-07-22 23:34:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 6453 transitions. [2022-07-22 23:34:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 23:34:42,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:42,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:34:42,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1735997556, now seen corresponding path program 1 times [2022-07-22 23:34:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:42,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129321472] [2022-07-22 23:34:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:43,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:43,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129321472] [2022-07-22 23:34:43,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129321472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:43,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:43,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:34:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15979400] [2022-07-22 23:34:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:34:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:34:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:34:43,019 INFO L87 Difference]: Start difference. First operand 4261 states and 6453 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) [2022-07-22 23:34:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:43,168 INFO L93 Difference]: Finished difference Result 4333 states and 6511 transitions. [2022-07-22 23:34:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:34:43,168 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 [2022-07-22 23:34:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:43,193 INFO L225 Difference]: With dead ends: 4333 [2022-07-22 23:34:43,194 INFO L226 Difference]: Without dead ends: 4312 [2022-07-22 23:34:43,197 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:43,201 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3107 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 3473 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 [2022-07-22 23:34:43,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 3473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:34:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-07-22 23:34:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2022-07-22 23:34:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4818103695216271) internal successors, (5173), 3519 states have internal predecessors, (5173), 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) [2022-07-22 23:34:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6473 transitions. [2022-07-22 23:34:43,352 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6473 transitions. Word has length 21 [2022-07-22 23:34:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:43,352 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6473 transitions. [2022-07-22 23:34:43,352 INFO L496 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) [2022-07-22 23:34:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6473 transitions. [2022-07-22 23:34:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 23:34:43,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:43,357 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:34:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:34:43,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1313551294, now seen corresponding path program 1 times [2022-07-22 23:34:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:43,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548753164] [2022-07-22 23:34:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:34:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:34:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:34:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:34:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:34:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:34:43,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:43,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548753164] [2022-07-22 23:34:43,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548753164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:43,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:43,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:34:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740788673] [2022-07-22 23:34:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:34:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:34:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:34:43,537 INFO L87 Difference]: Start difference. First operand 4310 states and 6473 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) [2022-07-22 23:34:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:48,776 INFO L93 Difference]: Finished difference Result 8570 states and 12881 transitions. [2022-07-22 23:34:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:34:48,777 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 [2022-07-22 23:34:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:48,811 INFO L225 Difference]: With dead ends: 8570 [2022-07-22 23:34:48,811 INFO L226 Difference]: Without dead ends: 4313 [2022-07-22 23:34:48,834 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:48,836 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4705 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:48,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 7449 Invalid, 3454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [913 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 23:34:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2022-07-22 23:34:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4310. [2022-07-22 23:34:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4812374677742768) internal successors, (5171), 3519 states have internal predecessors, (5171), 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) [2022-07-22 23:34:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6465 transitions. [2022-07-22 23:34:49,007 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6465 transitions. Word has length 61 [2022-07-22 23:34:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:49,008 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6465 transitions. [2022-07-22 23:34:49,009 INFO L496 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) [2022-07-22 23:34:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6465 transitions. [2022-07-22 23:34:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 23:34:49,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:49,012 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:34:49,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:34:49,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2136944131, now seen corresponding path program 1 times [2022-07-22 23:34:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:49,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958963750] [2022-07-22 23:34:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:34:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:34:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:34:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:34:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:34:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:34:49,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:49,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958963750] [2022-07-22 23:34:49,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958963750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:49,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:49,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:34:49,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527180643] [2022-07-22 23:34:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:49,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:34:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:34:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:34:49,320 INFO L87 Difference]: Start difference. First operand 4310 states and 6465 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) [2022-07-22 23:34:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:57,995 INFO L93 Difference]: Finished difference Result 6392 states and 9710 transitions. [2022-07-22 23:34:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:34:57,995 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 [2022-07-22 23:34:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:58,031 INFO L225 Difference]: With dead ends: 6392 [2022-07-22 23:34:58,032 INFO L226 Difference]: Without dead ends: 5310 [2022-07-22 23:34:58,046 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:34:58,047 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 2864 mSDsluCounter, 10609 mSDsCounter, 0 mSdLazyCounter, 7685 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 14856 SdHoareTripleChecker+Invalid, 8319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 7685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:58,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 14856 Invalid, 8319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 7685 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-22 23:34:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2022-07-22 23:34:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 3961. [2022-07-22 23:34:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 3182 states have (on average 1.4685732243871779) internal successors, (4673), 3208 states have internal predecessors, (4673), 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) [2022-07-22 23:34:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5891 transitions. [2022-07-22 23:34:58,252 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5891 transitions. Word has length 61 [2022-07-22 23:34:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:58,254 INFO L495 AbstractCegarLoop]: Abstraction has 3961 states and 5891 transitions. [2022-07-22 23:34:58,254 INFO L496 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) [2022-07-22 23:34:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5891 transitions. [2022-07-22 23:34:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 23:34:58,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:58,259 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:34:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:34:58,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1364454553, now seen corresponding path program 1 times [2022-07-22 23:34:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:58,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71145206] [2022-07-22 23:34:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:34:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:34:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:34:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 23:34:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:34:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:34:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 23:34:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:58,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71145206] [2022-07-22 23:34:58,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71145206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:58,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:58,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:34:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135830500] [2022-07-22 23:34:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:58,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:34:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:34:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:34:58,498 INFO L87 Difference]: Start difference. First operand 3961 states and 5891 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) [2022-07-22 23:35:02,743 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 [] [2022-07-22 23:35:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:07,156 INFO L93 Difference]: Finished difference Result 8987 states and 13565 transitions. [2022-07-22 23:35:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:35:07,156 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 [2022-07-22 23:35:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:07,196 INFO L225 Difference]: With dead ends: 8987 [2022-07-22 23:35:07,197 INFO L226 Difference]: Without dead ends: 5079 [2022-07-22 23:35:07,214 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:35:07,217 INFO L413 NwaCegarLoop]: 3152 mSDtfsCounter, 2631 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 1056 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 5283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1056 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:07,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 6730 Invalid, 5283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1056 Valid, 4226 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-07-22 23:35:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2022-07-22 23:35:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 4784. [2022-07-22 23:35:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 3864 states have (on average 1.4754140786749483) internal successors, (5701), 3895 states have internal predecessors, (5701), 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) [2022-07-22 23:35:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 7202 transitions. [2022-07-22 23:35:07,484 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 7202 transitions. Word has length 63 [2022-07-22 23:35:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 7202 transitions. [2022-07-22 23:35:07,485 INFO L496 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) [2022-07-22 23:35:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 7202 transitions. [2022-07-22 23:35:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 23:35:07,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:07,489 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:35:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:35:07,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1555859730, now seen corresponding path program 1 times [2022-07-22 23:35:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:07,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996454661] [2022-07-22 23:35:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:35:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:35:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:35:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:35:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:35:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:35:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:35:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:35:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996454661] [2022-07-22 23:35:07,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996454661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:07,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:07,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:35:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892250766] [2022-07-22 23:35:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:35:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:35:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:35:07,715 INFO L87 Difference]: Start difference. First operand 4784 states and 7202 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) [2022-07-22 23:35:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:14,308 INFO L93 Difference]: Finished difference Result 8110 states and 12296 transitions. [2022-07-22 23:35:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:35:14,309 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 [2022-07-22 23:35:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:14,383 INFO L225 Difference]: With dead ends: 8110 [2022-07-22 23:35:14,384 INFO L226 Difference]: Without dead ends: 6592 [2022-07-22 23:35:14,390 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:35:14,391 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 3860 mSDsluCounter, 9569 mSDsCounter, 0 mSdLazyCounter, 7605 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 13805 SdHoareTripleChecker+Invalid, 8331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 7605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:14,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 13805 Invalid, 8331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 7605 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:35:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2022-07-22 23:35:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 4782. [2022-07-22 23:35:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 3862 states have (on average 1.4751424132573796) internal successors, (5697), 3893 states have internal predecessors, (5697), 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) [2022-07-22 23:35:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7198 transitions. [2022-07-22 23:35:14,604 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7198 transitions. Word has length 78 [2022-07-22 23:35:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:14,605 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 7198 transitions. [2022-07-22 23:35:14,605 INFO L496 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) [2022-07-22 23:35:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7198 transitions. [2022-07-22 23:35:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-22 23:35:14,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:14,609 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:35:14,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:35:14,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1260357111, now seen corresponding path program 1 times [2022-07-22 23:35:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:14,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453272795] [2022-07-22 23:35:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:14,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:35:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 23:35:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:35:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:35:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:35:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:35:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:35:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:35:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453272795] [2022-07-22 23:35:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453272795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:14,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:14,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:35:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896894553] [2022-07-22 23:35:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:35:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:14,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:35:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:35:14,804 INFO L87 Difference]: Start difference. First operand 4782 states and 7198 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) [2022-07-22 23:35:19,436 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 [] [2022-07-22 23:35:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:24,231 INFO L93 Difference]: Finished difference Result 12026 states and 18584 transitions. [2022-07-22 23:35:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:35:24,231 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 [2022-07-22 23:35:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:24,267 INFO L225 Difference]: With dead ends: 12026 [2022-07-22 23:35:24,268 INFO L226 Difference]: Without dead ends: 7297 [2022-07-22 23:35:24,287 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:35:24,289 INFO L413 NwaCegarLoop]: 3794 mSDtfsCounter, 3750 mSDsluCounter, 6326 mSDsCounter, 0 mSdLazyCounter, 5967 mSolverCounterSat, 1634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 10120 SdHoareTripleChecker+Invalid, 7602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1634 IncrementalHoareTripleChecker+Valid, 5967 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:24,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 10120 Invalid, 7602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1634 Valid, 5967 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-07-22 23:35:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2022-07-22 23:35:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 6511. [2022-07-22 23:35:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 5310 states have (on average 1.4922787193973635) internal successors, (7924), 5340 states have internal predecessors, (7924), 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) [2022-07-22 23:35:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 9991 transitions. [2022-07-22 23:35:24,593 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 9991 transitions. Word has length 82 [2022-07-22 23:35:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 6511 states and 9991 transitions. [2022-07-22 23:35:24,593 INFO L496 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) [2022-07-22 23:35:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 9991 transitions. [2022-07-22 23:35:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 23:35:24,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:24,597 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:35:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:35:24,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1025149567, now seen corresponding path program 1 times [2022-07-22 23:35:24,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:24,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847831883] [2022-07-22 23:35:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:24,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:35:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:35:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:35:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:35:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:35:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:35:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:35:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:35:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:35:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847831883] [2022-07-22 23:35:24,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847831883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:24,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:24,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:35:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016548592] [2022-07-22 23:35:24,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:24,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:35:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:35:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:35:24,810 INFO L87 Difference]: Start difference. First operand 6511 states and 9991 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) [2022-07-22 23:35:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:29,019 INFO L93 Difference]: Finished difference Result 6857 states and 10641 transitions. [2022-07-22 23:35:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:35:29,019 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 81 [2022-07-22 23:35:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:29,051 INFO L225 Difference]: With dead ends: 6857 [2022-07-22 23:35:29,051 INFO L226 Difference]: Without dead ends: 6854 [2022-07-22 23:35:29,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:29,057 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 2096 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 7273 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:29,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 7273 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 23:35:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2022-07-22 23:35:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6510. [2022-07-22 23:35:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 5310 states have (on average 1.4919020715630884) internal successors, (7922), 5339 states have internal predecessors, (7922), 1033 states have call successors, (1033), 168 states have call predecessors, (1033), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2022-07-22 23:35:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9988 transitions. [2022-07-22 23:35:29,357 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9988 transitions. Word has length 81 [2022-07-22 23:35:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 6510 states and 9988 transitions. [2022-07-22 23:35:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-22 23:35:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9988 transitions. [2022-07-22 23:35:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 23:35:29,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:29,378 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:29,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:35:29,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -506086540, now seen corresponding path program 1 times [2022-07-22 23:35:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:29,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728233005] [2022-07-22 23:35:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:35:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:35:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:35:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:35:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:35:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:35:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:35:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:35:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:35:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:35:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:35:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 23:35:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:35:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 23:35:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:35:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:35:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728233005] [2022-07-22 23:35:29,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728233005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:29,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:29,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:35:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955125223] [2022-07-22 23:35:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:29,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:35:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:35:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:35:29,656 INFO L87 Difference]: Start difference. First operand 6510 states and 9988 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 23:35:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:36,641 INFO L93 Difference]: Finished difference Result 13459 states and 20861 transitions. [2022-07-22 23:35:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:35:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2022-07-22 23:35:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:36,678 INFO L225 Difference]: With dead ends: 13459 [2022-07-22 23:35:36,678 INFO L226 Difference]: Without dead ends: 6990 [2022-07-22 23:35:36,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:35:36,701 INFO L413 NwaCegarLoop]: 3066 mSDtfsCounter, 3902 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 5785 mSolverCounterSat, 2098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 10160 SdHoareTripleChecker+Invalid, 7883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2098 IncrementalHoareTripleChecker+Valid, 5785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:36,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3904 Valid, 10160 Invalid, 7883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2098 Valid, 5785 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-22 23:35:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2022-07-22 23:35:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 6504. [2022-07-22 23:35:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 5309 states have (on average 1.4912412883782256) internal successors, (7917), 5338 states have internal predecessors, (7917), 1028 states have call successors, (1028), 168 states have call predecessors, (1028), 166 states have return successors, (1028), 1028 states have call predecessors, (1028), 1020 states have call successors, (1028) [2022-07-22 23:35:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 9973 transitions. [2022-07-22 23:35:37,079 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 9973 transitions. Word has length 144 [2022-07-22 23:35:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:37,079 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 9973 transitions. [2022-07-22 23:35:37,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 23:35:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 9973 transitions. [2022-07-22 23:35:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 23:35:37,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:37,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:37,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:35:37,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1900050381, now seen corresponding path program 1 times [2022-07-22 23:35:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:37,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085187325] [2022-07-22 23:35:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:35:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:35:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:35:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:35:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:35:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:35:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:35:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:35:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:35:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:35:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:35:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:35:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:35:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:35:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:35:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:35:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:35:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:35:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 23:35:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:35:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:35:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:35:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:35:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:35:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 23:35:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-22 23:35:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-22 23:35:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-22 23:35:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 23:35:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-22 23:35:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:37,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085187325] [2022-07-22 23:35:37,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085187325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:37,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:37,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:35:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83983708] [2022-07-22 23:35:37,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:37,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:35:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:35:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:35:37,647 INFO L87 Difference]: Start difference. First operand 6504 states and 9973 transitions. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:35:43,102 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 [] [2022-07-22 23:35:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:50,127 INFO L93 Difference]: Finished difference Result 13716 states and 21377 transitions. [2022-07-22 23:35:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:35:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 239 [2022-07-22 23:35:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:50,160 INFO L225 Difference]: With dead ends: 13716 [2022-07-22 23:35:50,161 INFO L226 Difference]: Without dead ends: 7235 [2022-07-22 23:35:50,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 23:35:50,184 INFO L413 NwaCegarLoop]: 3034 mSDtfsCounter, 4753 mSDsluCounter, 9441 mSDsCounter, 0 mSdLazyCounter, 9934 mSolverCounterSat, 2708 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 12475 SdHoareTripleChecker+Invalid, 12643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2708 IncrementalHoareTripleChecker+Valid, 9934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:50,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4789 Valid, 12475 Invalid, 12643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2708 Valid, 9934 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-07-22 23:35:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2022-07-22 23:35:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 6512. [2022-07-22 23:35:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 5312 states have (on average 1.4890813253012047) internal successors, (7910), 5341 states have internal predecessors, (7910), 1033 states have call successors, (1033), 168 states have call predecessors, (1033), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2022-07-22 23:35:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 9976 transitions. [2022-07-22 23:35:50,447 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 9976 transitions. Word has length 239 [2022-07-22 23:35:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:50,448 INFO L495 AbstractCegarLoop]: Abstraction has 6512 states and 9976 transitions. [2022-07-22 23:35:50,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:35:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 9976 transitions. [2022-07-22 23:35:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-22 23:35:50,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:50,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:50,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 23:35:50,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1106676286, now seen corresponding path program 1 times [2022-07-22 23:35:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:50,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484767508] [2022-07-22 23:35:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:35:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:35:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:35:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:35:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:35:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:35:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:35:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:35:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:35:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:35:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 23:35:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:35:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 23:35:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 23:35:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:35:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 23:35:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:35:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:35:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:35:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 23:35:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 23:35:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:35:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:35:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:35:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:35:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-22 23:35:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-22 23:35:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-22 23:35:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-22 23:35:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-22 23:35:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 23:35:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:50,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484767508] [2022-07-22 23:35:50,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484767508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:50,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:50,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:35:50,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351793023] [2022-07-22 23:35:50,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:50,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:35:50,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:35:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:35:50,992 INFO L87 Difference]: Start difference. First operand 6512 states and 9976 transitions. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:35:58,135 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 [] [2022-07-22 23:36:00,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:11,277 INFO L93 Difference]: Finished difference Result 13890 states and 21920 transitions. [2022-07-22 23:36:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 23:36:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 263 [2022-07-22 23:36:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:11,324 INFO L225 Difference]: With dead ends: 13890 [2022-07-22 23:36:11,324 INFO L226 Difference]: Without dead ends: 7394 [2022-07-22 23:36:11,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-07-22 23:36:11,364 INFO L413 NwaCegarLoop]: 3047 mSDtfsCounter, 4467 mSDsluCounter, 11930 mSDsCounter, 0 mSdLazyCounter, 13570 mSolverCounterSat, 2465 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 14977 SdHoareTripleChecker+Invalid, 16037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2465 IncrementalHoareTripleChecker+Valid, 13570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:11,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 14977 Invalid, 16037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2465 Valid, 13570 Invalid, 2 Unknown, 0 Unchecked, 19.5s Time] [2022-07-22 23:36:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2022-07-22 23:36:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 6576. [2022-07-22 23:36:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 5375 states have (on average 1.4852093023255815) internal successors, (7983), 5397 states have internal predecessors, (7983), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-22 23:36:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10052 transitions. [2022-07-22 23:36:11,740 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10052 transitions. Word has length 263 [2022-07-22 23:36:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:11,740 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 10052 transitions. [2022-07-22 23:36:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-22 23:36:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10052 transitions. [2022-07-22 23:36:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-22 23:36:11,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:11,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:36:11,765 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2009801004, now seen corresponding path program 1 times [2022-07-22 23:36:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:11,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390309285] [2022-07-22 23:36:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:36:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:36:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:36:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:36:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:36:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:36:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:36:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:36:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:36:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:36:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:36:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:36:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:36:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:36:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:36:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:36:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:36:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:36:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:36:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:36:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:36:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:36:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:36:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:36:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-22 23:36:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-22 23:36:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-22 23:36:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-22 23:36:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-22 23:36:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:36:12,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:12,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390309285] [2022-07-22 23:36:12,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390309285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:36:12,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:36:12,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:36:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910580829] [2022-07-22 23:36:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:36:12,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:36:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:36:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:36:12,207 INFO L87 Difference]: Start difference. First operand 6576 states and 10052 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:36:17,125 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 [] [2022-07-22 23:36:22,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:22,885 INFO L93 Difference]: Finished difference Result 13892 states and 21612 transitions. [2022-07-22 23:36:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:36:22,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 249 [2022-07-22 23:36:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:22,922 INFO L225 Difference]: With dead ends: 13892 [2022-07-22 23:36:22,922 INFO L226 Difference]: Without dead ends: 7369 [2022-07-22 23:36:22,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-07-22 23:36:22,942 INFO L413 NwaCegarLoop]: 3010 mSDtfsCounter, 5166 mSDsluCounter, 6392 mSDsCounter, 0 mSdLazyCounter, 5859 mSolverCounterSat, 3103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 9402 SdHoareTripleChecker+Invalid, 8963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3103 IncrementalHoareTripleChecker+Valid, 5859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:22,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5168 Valid, 9402 Invalid, 8963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3103 Valid, 5859 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-07-22 23:36:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-22 23:36:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 6580. [2022-07-22 23:36:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6580 states, 5379 states have (on average 1.4848484848484849) internal successors, (7987), 5401 states have internal predecessors, (7987), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-22 23:36:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6580 states to 6580 states and 10056 transitions. [2022-07-22 23:36:23,296 INFO L78 Accepts]: Start accepts. Automaton has 6580 states and 10056 transitions. Word has length 249 [2022-07-22 23:36:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:23,297 INFO L495 AbstractCegarLoop]: Abstraction has 6580 states and 10056 transitions. [2022-07-22 23:36:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:36:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6580 states and 10056 transitions. [2022-07-22 23:36:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-22 23:36:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:23,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 23:36:23,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1493708136, now seen corresponding path program 1 times [2022-07-22 23:36:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050021242] [2022-07-22 23:36:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:36:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:36:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:36:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:36:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:36:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:36:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:36:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:36:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:36:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:36:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:36:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:36:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:36:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:36:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:36:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:36:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:36:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:36:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:36:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:36:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:36:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:36:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:36:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 23:36:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-22 23:36:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-22 23:36:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-22 23:36:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 23:36:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:36:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050021242] [2022-07-22 23:36:23,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050021242] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:36:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982290184] [2022-07-22 23:36:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:36:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:36:23,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:36:23,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:36:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:24,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:36:24,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:36:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 23:36:24,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:36:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:36:25,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982290184] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:36:25,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:36:25,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-07-22 23:36:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248412745] [2022-07-22 23:36:25,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:36:25,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 23:36:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 23:36:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:36:25,081 INFO L87 Difference]: Start difference. First operand 6580 states and 10056 transitions. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-22 23:36:30,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:36,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:36:40,781 INFO L93 Difference]: Finished difference Result 13916 states and 21644 transitions. [2022-07-22 23:36:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:36:40,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 251 [2022-07-22 23:36:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:36:40,809 INFO L225 Difference]: With dead ends: 13916 [2022-07-22 23:36:40,809 INFO L226 Difference]: Without dead ends: 7389 [2022-07-22 23:36:40,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-07-22 23:36:40,829 INFO L413 NwaCegarLoop]: 3005 mSDtfsCounter, 4756 mSDsluCounter, 8781 mSDsCounter, 0 mSdLazyCounter, 9258 mSolverCounterSat, 2706 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 11786 SdHoareTripleChecker+Invalid, 11966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2706 IncrementalHoareTripleChecker+Valid, 9258 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:36:40,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 11786 Invalid, 11966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2706 Valid, 9258 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2022-07-22 23:36:40,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2022-07-22 23:36:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 6604. [2022-07-22 23:36:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6604 states, 5403 states have (on average 1.4826947991856376) internal successors, (8011), 5425 states have internal predecessors, (8011), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-22 23:36:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6604 states to 6604 states and 10080 transitions. [2022-07-22 23:36:41,143 INFO L78 Accepts]: Start accepts. Automaton has 6604 states and 10080 transitions. Word has length 251 [2022-07-22 23:36:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:36:41,144 INFO L495 AbstractCegarLoop]: Abstraction has 6604 states and 10080 transitions. [2022-07-22 23:36:41,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-22 23:36:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6604 states and 10080 transitions. [2022-07-22 23:36:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-22 23:36:41,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:36:41,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:36:41,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:36:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 23:36:41,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:36:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:36:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 158230500, now seen corresponding path program 2 times [2022-07-22 23:36:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:36:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658645852] [2022-07-22 23:36:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:36:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:36:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:36:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:36:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:36:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:36:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:36:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:36:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:36:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:36:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:36:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:36:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:36:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:36:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:36:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:36:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:36:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:36:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:36:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:36:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:36:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:36:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:36:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:36:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:36:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:36:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-22 23:36:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-22 23:36:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 23:36:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-22 23:36:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-22 23:36:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:36:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:36:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-22 23:36:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:36:41,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658645852] [2022-07-22 23:36:41,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658645852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:36:41,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:36:41,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:36:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262807568] [2022-07-22 23:36:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:36:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:36:41,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:36:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:36:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:36:41,950 INFO L87 Difference]: Start difference. First operand 6604 states and 10080 transitions. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:36:48,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:50,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:36:54,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:04,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:06,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:10,472 INFO L93 Difference]: Finished difference Result 17791 states and 28156 transitions. [2022-07-22 23:37:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:37:10,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 257 [2022-07-22 23:37:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:10,526 INFO L225 Difference]: With dead ends: 17791 [2022-07-22 23:37:10,526 INFO L226 Difference]: Without dead ends: 11240 [2022-07-22 23:37:10,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-07-22 23:37:10,562 INFO L413 NwaCegarLoop]: 4550 mSDtfsCounter, 6042 mSDsluCounter, 21184 mSDsCounter, 0 mSdLazyCounter, 15145 mSolverCounterSat, 2693 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 25734 SdHoareTripleChecker+Invalid, 17841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2693 IncrementalHoareTripleChecker+Valid, 15145 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 25734 Invalid, 17841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2693 Valid, 15145 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2022-07-22 23:37:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2022-07-22 23:37:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 6618. [2022-07-22 23:37:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 5415 states have (on average 1.4816251154201292) internal successors, (8023), 5435 states have internal predecessors, (8023), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 169 states have return successors, (1041), 1037 states have call predecessors, (1041), 1025 states have call successors, (1041) [2022-07-22 23:37:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 10097 transitions. [2022-07-22 23:37:11,086 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 10097 transitions. Word has length 257 [2022-07-22 23:37:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 10097 transitions. [2022-07-22 23:37:11,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:37:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 10097 transitions. [2022-07-22 23:37:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-22 23:37:11,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:11,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:37:11,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 735751408, now seen corresponding path program 1 times [2022-07-22 23:37:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:11,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044773833] [2022-07-22 23:37:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:37:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:37:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:37:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:37:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:37:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:37:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:37:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:37:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:37:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:37:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:37:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:37:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:37:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:37:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:37:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:37:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:37:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:37:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:37:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:37:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:37:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:37:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:37:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:37:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 23:37:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-22 23:37:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-22 23:37:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-22 23:37:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-22 23:37:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 23:37:11,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044773833] [2022-07-22 23:37:11,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044773833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:37:11,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:37:11,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:37:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336954367] [2022-07-22 23:37:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:37:11,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:37:11,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:37:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:37:11,726 INFO L87 Difference]: Start difference. First operand 6618 states and 10097 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:37:18,067 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 [] [2022-07-22 23:37:28,437 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 [] [2022-07-22 23:37:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:31,106 INFO L93 Difference]: Finished difference Result 11995 states and 19154 transitions. [2022-07-22 23:37:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:37:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 260 [2022-07-22 23:37:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:31,151 INFO L225 Difference]: With dead ends: 11995 [2022-07-22 23:37:31,152 INFO L226 Difference]: Without dead ends: 11069 [2022-07-22 23:37:31,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-22 23:37:31,167 INFO L413 NwaCegarLoop]: 4462 mSDtfsCounter, 6938 mSDsluCounter, 17923 mSDsCounter, 0 mSdLazyCounter, 12762 mSolverCounterSat, 3123 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6940 SdHoareTripleChecker+Valid, 22385 SdHoareTripleChecker+Invalid, 15887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3123 IncrementalHoareTripleChecker+Valid, 12762 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:31,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6940 Valid, 22385 Invalid, 15887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3123 Valid, 12762 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2022-07-22 23:37:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2022-07-22 23:37:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 6470. [2022-07-22 23:37:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 5288 states have (on average 1.4784417549167927) internal successors, (7818), 5307 states have internal predecessors, (7818), 1013 states have call successors, (1013), 166 states have call predecessors, (1013), 168 states have return successors, (1022), 1018 states have call predecessors, (1022), 1006 states have call successors, (1022) [2022-07-22 23:37:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 9853 transitions. [2022-07-22 23:37:31,638 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 9853 transitions. Word has length 260 [2022-07-22 23:37:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:31,638 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 9853 transitions. [2022-07-22 23:37:31,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:37:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 9853 transitions. [2022-07-22 23:37:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-22 23:37:31,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:31,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:31,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 23:37:31,653 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1715192008, now seen corresponding path program 1 times [2022-07-22 23:37:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:31,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924109641] [2022-07-22 23:37:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:37:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:37:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:37:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:37:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:37:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:37:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:37:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:37:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:37:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:37:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:37:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:37:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:37:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:37:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:37:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:37:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:37:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:37:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:37:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:37:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:37:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:37:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:37:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:37:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:37:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 23:37:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-22 23:37:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-22 23:37:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-22 23:37:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-22 23:37:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-22 23:37:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-22 23:37:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 23:37:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:32,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924109641] [2022-07-22 23:37:32,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924109641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:37:32,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:37:32,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:37:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759789665] [2022-07-22 23:37:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:37:32,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:37:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:37:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:37:32,158 INFO L87 Difference]: Start difference. First operand 6470 states and 9853 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:37:38,906 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 [] [2022-07-22 23:37:40,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:54,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:56,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:37:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:59,374 INFO L93 Difference]: Finished difference Result 12992 states and 20609 transitions. [2022-07-22 23:37:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:37:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 266 [2022-07-22 23:37:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:59,406 INFO L225 Difference]: With dead ends: 12992 [2022-07-22 23:37:59,406 INFO L226 Difference]: Without dead ends: 11063 [2022-07-22 23:37:59,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-07-22 23:37:59,418 INFO L413 NwaCegarLoop]: 4457 mSDtfsCounter, 6919 mSDsluCounter, 19065 mSDsCounter, 0 mSdLazyCounter, 14894 mSolverCounterSat, 2784 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6921 SdHoareTripleChecker+Valid, 23522 SdHoareTripleChecker+Invalid, 17681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2784 IncrementalHoareTripleChecker+Valid, 14894 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:59,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6921 Valid, 23522 Invalid, 17681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2784 Valid, 14894 Invalid, 3 Unknown, 0 Unchecked, 26.3s Time] [2022-07-22 23:37:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11063 states. [2022-07-22 23:37:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11063 to 6464. [2022-07-22 23:37:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6464 states, 5284 states have (on average 1.4780469341408025) internal successors, (7810), 5303 states have internal predecessors, (7810), 1011 states have call successors, (1011), 166 states have call predecessors, (1011), 168 states have return successors, (1020), 1016 states have call predecessors, (1020), 1004 states have call successors, (1020) [2022-07-22 23:37:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6464 states to 6464 states and 9841 transitions. [2022-07-22 23:37:59,831 INFO L78 Accepts]: Start accepts. Automaton has 6464 states and 9841 transitions. Word has length 266 [2022-07-22 23:37:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:59,831 INFO L495 AbstractCegarLoop]: Abstraction has 6464 states and 9841 transitions. [2022-07-22 23:37:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-22 23:37:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6464 states and 9841 transitions. [2022-07-22 23:37:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-22 23:37:59,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:59,845 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 23:37:59,846 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 885064232, now seen corresponding path program 1 times [2022-07-22 23:37:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:59,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114870960] [2022-07-22 23:37:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:38:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 23:38:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:38:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:38:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:38:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:38:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:38:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:38:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:38:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:38:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:38:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:38:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:38:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:38:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:38:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:38:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:38:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 23:38:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 23:38:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:38:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:38:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:38:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:38:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 23:38:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-22 23:38:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-22 23:38:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-22 23:38:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-22 23:38:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-07-22 23:38:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-22 23:38:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-22 23:38:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 23:38:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114870960] [2022-07-22 23:38:00,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114870960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:38:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950375969] [2022-07-22 23:38:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:00,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:38:00,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:38:00,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:38:00,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:38:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:01,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:38:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:38:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 23:38:01,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:38:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 23:38:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950375969] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:38:01,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:38:01,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 13 [2022-07-22 23:38:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347725338] [2022-07-22 23:38:01,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:38:01,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:38:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:38:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:38:01,904 INFO L87 Difference]: Start difference. First operand 6464 states and 9841 transitions. Second operand has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (73), 10 states have call predecessors, (73), 2 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2022-07-22 23:38:09,202 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 [] [2022-07-22 23:38:11,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []