./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.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 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 23:46:42,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:46:42,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:46:42,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:46:42,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:46:42,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:46:42,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:46:42,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:46:42,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:46:42,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:46:42,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:46:42,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:46:42,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:46:42,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:46:42,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:46:42,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:46:42,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:46:42,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:46:42,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:46:42,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:46:42,656 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:46:42,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:46:42,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:46:42,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:46:42,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:46:42,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:46:42,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:46:42,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:46:42,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:46:42,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:46:42,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:46:42,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:46:42,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:46:42,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:46:42,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:46:42,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:46:42,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:46:42,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:46:42,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:46:42,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:46:42,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:46:42,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:46:42,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:46:42,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:46:42,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:46:42,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:46:42,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:46:42,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:46:42,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:46:42,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:46:42,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:46:42,712 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:46:42,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:46:42,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:46:42,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:46:42,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:46:42,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:46:42,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:46:42,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:46:42,714 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:46:42,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:46:42,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:46:42,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:46:42,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:46:42,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:46:42,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:46:42,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:46:42,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:46:42,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:46:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:46:42,716 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:46:42,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:46:42,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:46:42,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-07-13 23:46:42,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:46:42,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:46:42,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:46:42,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:46:42,997 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:46:42,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-13 23:46:43,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f022184b/3e2afa520f2c40d6b84a77e57c356f60/FLAGd05ed959c [2022-07-13 23:46:43,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:46:43,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-13 23:46:43,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f022184b/3e2afa520f2c40d6b84a77e57c356f60/FLAGd05ed959c [2022-07-13 23:46:44,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f022184b/3e2afa520f2c40d6b84a77e57c356f60 [2022-07-13 23:46:44,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:46:44,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:46:44,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:46:44,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:46:44,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:46:44,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:44" (1/1) ... [2022-07-13 23:46:44,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2516ee1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:44, skipping insertion in model container [2022-07-13 23:46:44,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:44" (1/1) ... [2022-07-13 23:46:44,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:46:44,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:46:46,401 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/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-13 23:46:46,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:46:46,574 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:46:46,994 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/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-13 23:46:47,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:46:47,100 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:46:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47 WrapperNode [2022-07-13 23:46:47,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:46:47,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:46:47,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:46:47,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:46:47,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,335 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3344 [2022-07-13 23:46:47,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:46:47,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:46:47,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:46:47,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:46:47,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:46:47,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:46:47,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:46:47,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:46:47,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (1/1) ... [2022-07-13 23:46:47,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:46:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:46:47,616 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) [2022-07-13 23:46:47,643 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 [2022-07-13 23:46:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-07-13 23:46:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-07-13 23:46:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-13 23:46:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-13 23:46:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:46:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:46:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-07-13 23:46:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-07-13 23:46:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-07-13 23:46:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-07-13 23:46:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-13 23:46:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-13 23:46:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-07-13 23:46:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-07-13 23:46:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-07-13 23:46:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-07-13 23:46:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-13 23:46:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-13 23:46:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-13 23:46:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-13 23:46:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-13 23:46:47,661 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-13 23:46:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-13 23:46:47,662 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-13 23:46:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-13 23:46:47,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-13 23:46:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-07-13 23:46:47,662 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-07-13 23:46:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:46:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-13 23:46:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-13 23:46:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-07-13 23:46:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-07-13 23:46:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-13 23:46:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-13 23:46:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-13 23:46:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-13 23:46:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-07-13 23:46:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-07-13 23:46:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 23:46:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-07-13 23:46:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-07-13 23:46:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 23:46:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-13 23:46:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-13 23:46:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:46:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 23:46:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 23:46:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-07-13 23:46:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-07-13 23:46:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-13 23:46:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-13 23:46:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-13 23:46:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-13 23:46:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-07-13 23:46:47,667 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-07-13 23:46:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:46:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-07-13 23:46:47,668 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-07-13 23:46:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-13 23:46:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-13 23:46:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:46:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-07-13 23:46:47,669 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-07-13 23:46:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:46:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-13 23:46:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 23:46:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 23:46:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-07-13 23:46:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-07-13 23:46:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-13 23:46:47,670 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-13 23:46:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-13 23:46:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-13 23:46:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-07-13 23:46:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-07-13 23:46:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-07-13 23:46:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-07-13 23:46:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-13 23:46:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-13 23:46:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-07-13 23:46:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-07-13 23:46:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:46:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:46:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-07-13 23:46:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-13 23:46:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-13 23:46:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 23:46:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 23:46:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-07-13 23:46:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-07-13 23:46:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:46:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:46:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:46:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:46:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-13 23:46:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-13 23:46:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-07-13 23:46:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-07-13 23:46:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:46:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:46:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:46:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-13 23:46:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-13 23:46:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-07-13 23:46:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-07-13 23:46:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:46:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:46:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-07-13 23:46:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-07-13 23:46:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-13 23:46:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-13 23:46:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-07-13 23:46:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-07-13 23:46:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-13 23:46:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-13 23:46:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-07-13 23:46:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-07-13 23:46:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-07-13 23:46:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-07-13 23:46:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-13 23:46:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-13 23:46:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-13 23:46:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-13 23:46:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-07-13 23:46:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-07-13 23:46:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-13 23:46:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-13 23:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-07-13 23:46:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-07-13 23:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-13 23:46:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-13 23:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-13 23:46:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-13 23:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-07-13 23:46:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-07-13 23:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-07-13 23:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-07-13 23:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-13 23:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-13 23:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-13 23:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-13 23:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-07-13 23:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-07-13 23:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-13 23:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-13 23:46:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-07-13 23:46:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-07-13 23:46:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-13 23:46:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-13 23:46:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-13 23:46:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-13 23:46:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-13 23:46:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-13 23:46:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-07-13 23:46:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-07-13 23:46:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-07-13 23:46:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-07-13 23:46:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-07-13 23:46:47,693 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-07-13 23:46:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:46:47,693 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-07-13 23:46:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-07-13 23:46:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-13 23:46:47,694 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-13 23:46:47,694 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-13 23:46:48,294 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:46:48,306 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:46:56,319 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:46:56,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:46:56,338 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:46:56,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:56 BoogieIcfgContainer [2022-07-13 23:46:56,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:46:56,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:46:56,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:46:56,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:46:56,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:46:44" (1/3) ... [2022-07-13 23:46:56,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59766be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:56, skipping insertion in model container [2022-07-13 23:46:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:47" (2/3) ... [2022-07-13 23:46:56,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59766be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:56, skipping insertion in model container [2022-07-13 23:46:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:56" (3/3) ... [2022-07-13 23:46:56,350 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-13 23:46:56,362 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:46:56,363 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:46:56,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:46:56,475 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@47ba2a3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@749ef136 [2022-07-13 23:46:56,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:46:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2022-07-13 23:46:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 23:46:56,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:46:56,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:46:56,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:46:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:46:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1353827036, now seen corresponding path program 1 times [2022-07-13 23:46:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:46:56,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699563172] [2022-07-13 23:46:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:46:56,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:46:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:46:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:46:56,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:46:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699563172] [2022-07-13 23:46:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699563172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:46:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:46:56,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:46:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189797579] [2022-07-13 23:46:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:46:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:46:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:46:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:46:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:46:57,033 INFO L87 Difference]: Start difference. First operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 23:46:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:46:57,293 INFO L93 Difference]: Finished difference Result 3675 states and 5434 transitions. [2022-07-13 23:46:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:46:57,296 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 23:46:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:46:57,323 INFO L225 Difference]: With dead ends: 3675 [2022-07-13 23:46:57,323 INFO L226 Difference]: Without dead ends: 2424 [2022-07-13 23:46:57,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:46:57,342 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 1711 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:46:57,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 4583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:46:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-13 23:46:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2420. [2022-07-13 23:46:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1687 states have (on average 1.3556609365737997) internal successors, (2287), 1774 states have internal predecessors, (2287), 590 states have call successors, (590), 143 states have call predecessors, (590), 142 states have return successors, (580), 568 states have call predecessors, (580), 580 states have call successors, (580) [2022-07-13 23:46:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3457 transitions. [2022-07-13 23:46:57,554 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3457 transitions. Word has length 16 [2022-07-13 23:46:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:46:57,555 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3457 transitions. [2022-07-13 23:46:57,556 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 23:46:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3457 transitions. [2022-07-13 23:46:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 23:46:57,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:46:57,563 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, 1, 1] [2022-07-13 23:46:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:46:57,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:46:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:46:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1697719892, now seen corresponding path program 1 times [2022-07-13 23:46:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:46:57,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791484698] [2022-07-13 23:46:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:46:57,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:46:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:46:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:46:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:46:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:46:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:46:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791484698] [2022-07-13 23:46:57,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791484698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:46:57,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:46:57,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:46:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086345287] [2022-07-13 23:46:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:46:57,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:46:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:46:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:46:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:46:57,763 INFO L87 Difference]: Start difference. First operand 2420 states and 3457 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-07-13 23:47:05,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:10,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:11,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:14,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:16,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:18,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:20,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:24,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:25,344 INFO L93 Difference]: Finished difference Result 7503 states and 10878 transitions. [2022-07-13 23:47:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:47:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 23 [2022-07-13 23:47:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:25,372 INFO L225 Difference]: With dead ends: 7503 [2022-07-13 23:47:25,372 INFO L226 Difference]: Without dead ends: 5086 [2022-07-13 23:47:25,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:47:25,383 INFO L413 NwaCegarLoop]: 2080 mSDtfsCounter, 3074 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6495 mSolverCounterSat, 2064 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3400 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 8563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2064 IncrementalHoareTripleChecker+Valid, 6495 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:25,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3400 Valid, 2781 Invalid, 8563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2064 Valid, 6495 Invalid, 4 Unknown, 0 Unchecked, 27.1s Time] [2022-07-13 23:47:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-07-13 23:47:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4778. [2022-07-13 23:47:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 3336 states have (on average 1.3558153477218224) internal successors, (4523), 3500 states have internal predecessors, (4523), 1159 states have call successors, (1159), 282 states have call predecessors, (1159), 282 states have return successors, (1154), 1125 states have call predecessors, (1154), 1149 states have call successors, (1154) [2022-07-13 23:47:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6836 transitions. [2022-07-13 23:47:25,625 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6836 transitions. Word has length 23 [2022-07-13 23:47:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:25,625 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 6836 transitions. [2022-07-13 23:47:25,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-07-13 23:47:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6836 transitions. [2022-07-13 23:47:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 23:47:25,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:25,628 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, 1, 1, 1, 1] [2022-07-13 23:47:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:47:25,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1343888216, now seen corresponding path program 1 times [2022-07-13 23:47:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:25,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37212345] [2022-07-13 23:47:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:47:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:47:25,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:25,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37212345] [2022-07-13 23:47:25,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37212345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:25,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:25,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:47:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678768848] [2022-07-13 23:47:25,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:25,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:47:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:47:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:25,798 INFO L87 Difference]: Start difference. First operand 4778 states and 6836 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-07-13 23:47:32,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:35,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:36,882 INFO L93 Difference]: Finished difference Result 9653 states and 13951 transitions. [2022-07-13 23:47:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:36,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 25 [2022-07-13 23:47:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:36,919 INFO L225 Difference]: With dead ends: 9653 [2022-07-13 23:47:36,919 INFO L226 Difference]: Without dead ends: 4878 [2022-07-13 23:47:36,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:47:36,946 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 2131 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 607 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:36,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 3123 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1925 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-07-13 23:47:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2022-07-13 23:47:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4590. [2022-07-13 23:47:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3190 states have (on average 1.352037617554859) internal successors, (4313), 3350 states have internal predecessors, (4313), 1125 states have call successors, (1125), 274 states have call predecessors, (1125), 274 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:47:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 6557 transitions. [2022-07-13 23:47:37,236 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 6557 transitions. Word has length 25 [2022-07-13 23:47:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:37,237 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 6557 transitions. [2022-07-13 23:47:37,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-07-13 23:47:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 6557 transitions. [2022-07-13 23:47:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 23:47:37,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:37,241 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:47:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:47:37,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1947073205, now seen corresponding path program 1 times [2022-07-13 23:47:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:37,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099702852] [2022-07-13 23:47:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:47:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:47:37,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:37,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099702852] [2022-07-13 23:47:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099702852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731644730] [2022-07-13 23:47:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:37,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:37,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:37,463 INFO L87 Difference]: Start difference. First operand 4590 states and 6557 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-13 23:47:43,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:45,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:45,952 INFO L93 Difference]: Finished difference Result 4903 states and 7128 transitions. [2022-07-13 23:47:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:47:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 35 [2022-07-13 23:47:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:45,978 INFO L225 Difference]: With dead ends: 4903 [2022-07-13 23:47:45,978 INFO L226 Difference]: Without dead ends: 4899 [2022-07-13 23:47:45,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:45,982 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 1871 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:45,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 1801 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1134 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-07-13 23:47:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-07-13 23:47:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4612. [2022-07-13 23:47:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3206 states have (on average 1.3487211478477854) internal successors, (4324), 3364 states have internal predecessors, (4324), 1123 states have call successors, (1123), 282 states have call predecessors, (1123), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:47:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6566 transitions. [2022-07-13 23:47:46,195 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6566 transitions. Word has length 35 [2022-07-13 23:47:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:46,195 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6566 transitions. [2022-07-13 23:47:46,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-13 23:47:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6566 transitions. [2022-07-13 23:47:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 23:47:46,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:46,197 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:47:46,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:47:46,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash -230381267, now seen corresponding path program 1 times [2022-07-13 23:47:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:46,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966082113] [2022-07-13 23:47:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:47:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:47:46,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:46,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966082113] [2022-07-13 23:47:46,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966082113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:46,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:46,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901281395] [2022-07-13 23:47:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:46,371 INFO L87 Difference]: Start difference. First operand 4612 states and 6566 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-13 23:47:53,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:55,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:47:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:47:55,375 INFO L93 Difference]: Finished difference Result 4899 states and 7120 transitions. [2022-07-13 23:47:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:47:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2022-07-13 23:47:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:47:55,408 INFO L225 Difference]: With dead ends: 4899 [2022-07-13 23:47:55,409 INFO L226 Difference]: Without dead ends: 4896 [2022-07-13 23:47:55,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:47:55,417 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1892 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 538 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:47:55,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1782 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1120 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-07-13 23:47:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2022-07-13 23:47:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4611. [2022-07-13 23:47:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 3206 states have (on average 1.3484092326887087) internal successors, (4323), 3363 states have internal predecessors, (4323), 1122 states have call successors, (1122), 282 states have call predecessors, (1122), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:47:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6564 transitions. [2022-07-13 23:47:55,747 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6564 transitions. Word has length 36 [2022-07-13 23:47:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:47:55,748 INFO L495 AbstractCegarLoop]: Abstraction has 4611 states and 6564 transitions. [2022-07-13 23:47:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-13 23:47:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6564 transitions. [2022-07-13 23:47:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 23:47:55,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:47:55,753 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:47:55,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:47:55,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:47:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:47:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1447466126, now seen corresponding path program 1 times [2022-07-13 23:47:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:47:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030096110] [2022-07-13 23:47:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:47:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:47:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:47:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:47:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:47:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:47:55,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030096110] [2022-07-13 23:47:55,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030096110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:47:55,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:47:55,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:47:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274866506] [2022-07-13 23:47:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:47:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:47:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:47:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:47:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:47:55,920 INFO L87 Difference]: Start difference. First operand 4611 states and 6564 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-13 23:48:01,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:04,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:06,265 INFO L93 Difference]: Finished difference Result 4898 states and 7118 transitions. [2022-07-13 23:48:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 37 [2022-07-13 23:48:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:06,290 INFO L225 Difference]: With dead ends: 4898 [2022-07-13 23:48:06,291 INFO L226 Difference]: Without dead ends: 4895 [2022-07-13 23:48:06,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:06,294 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1890 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 537 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:06,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 1777 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1118 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-07-13 23:48:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2022-07-13 23:48:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4610. [2022-07-13 23:48:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3206 states have (on average 1.348097317529632) internal successors, (4322), 3362 states have internal predecessors, (4322), 1121 states have call successors, (1121), 282 states have call predecessors, (1121), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:48:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6562 transitions. [2022-07-13 23:48:06,511 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6562 transitions. Word has length 37 [2022-07-13 23:48:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:06,512 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 6562 transitions. [2022-07-13 23:48:06,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-13 23:48:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6562 transitions. [2022-07-13 23:48:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 23:48:06,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:06,514 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:48:06,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1921132624, now seen corresponding path program 1 times [2022-07-13 23:48:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951003668] [2022-07-13 23:48:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:48:06,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:06,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951003668] [2022-07-13 23:48:06,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951003668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:06,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:06,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:06,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826844512] [2022-07-13 23:48:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:06,649 INFO L87 Difference]: Start difference. First operand 4610 states and 6562 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-13 23:48:11,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:13,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:16,780 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 [] [2022-07-13 23:48:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:16,995 INFO L93 Difference]: Finished difference Result 4897 states and 7116 transitions. [2022-07-13 23:48:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:16,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 38 [2022-07-13 23:48:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:17,024 INFO L225 Difference]: With dead ends: 4897 [2022-07-13 23:48:17,024 INFO L226 Difference]: Without dead ends: 4894 [2022-07-13 23:48:17,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:17,030 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1884 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 533 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:17,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 1780 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1118 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-07-13 23:48:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2022-07-13 23:48:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4609. [2022-07-13 23:48:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 3206 states have (on average 1.347785402370555) internal successors, (4321), 3361 states have internal predecessors, (4321), 1120 states have call successors, (1120), 282 states have call predecessors, (1120), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:48:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 6560 transitions. [2022-07-13 23:48:17,338 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 6560 transitions. Word has length 38 [2022-07-13 23:48:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:17,339 INFO L495 AbstractCegarLoop]: Abstraction has 4609 states and 6560 transitions. [2022-07-13 23:48:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-13 23:48:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 6560 transitions. [2022-07-13 23:48:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 23:48:17,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:17,341 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:48:17,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash -575070255, now seen corresponding path program 1 times [2022-07-13 23:48:17,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:17,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449595378] [2022-07-13 23:48:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:48:17,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449595378] [2022-07-13 23:48:17,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449595378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:17,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:17,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458090428] [2022-07-13 23:48:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:17,519 INFO L87 Difference]: Start difference. First operand 4609 states and 6560 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-13 23:48:24,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:26,144 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 [] [2022-07-13 23:48:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:26,285 INFO L93 Difference]: Finished difference Result 4896 states and 7114 transitions. [2022-07-13 23:48:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 39 [2022-07-13 23:48:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:26,300 INFO L225 Difference]: With dead ends: 4896 [2022-07-13 23:48:26,300 INFO L226 Difference]: Without dead ends: 4893 [2022-07-13 23:48:26,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:26,302 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1883 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 535 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:26,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 1771 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1117 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-07-13 23:48:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-07-13 23:48:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4608. [2022-07-13 23:48:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 3206 states have (on average 1.3474734872114784) internal successors, (4320), 3360 states have internal predecessors, (4320), 1119 states have call successors, (1119), 282 states have call predecessors, (1119), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:48:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6558 transitions. [2022-07-13 23:48:26,494 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6558 transitions. Word has length 39 [2022-07-13 23:48:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:26,495 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 6558 transitions. [2022-07-13 23:48:26,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-13 23:48:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6558 transitions. [2022-07-13 23:48:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 23:48:26,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:26,496 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:26,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:48:26,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:26,497 INFO L85 PathProgramCache]: Analyzing trace with hash -647943309, now seen corresponding path program 1 times [2022-07-13 23:48:26,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:26,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685747201] [2022-07-13 23:48:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:48:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:26,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685747201] [2022-07-13 23:48:26,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685747201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:26,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:26,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745907532] [2022-07-13 23:48:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:26,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:26,644 INFO L87 Difference]: Start difference. First operand 4608 states and 6558 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-13 23:48:31,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:33,524 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 [] [2022-07-13 23:48:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:34,203 INFO L93 Difference]: Finished difference Result 4895 states and 7112 transitions. [2022-07-13 23:48:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 40 [2022-07-13 23:48:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:34,221 INFO L225 Difference]: With dead ends: 4895 [2022-07-13 23:48:34,221 INFO L226 Difference]: Without dead ends: 4892 [2022-07-13 23:48:34,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:34,227 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1880 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:34,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1774 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-07-13 23:48:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-07-13 23:48:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4607. [2022-07-13 23:48:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 3206 states have (on average 1.3471615720524017) internal successors, (4319), 3359 states have internal predecessors, (4319), 1118 states have call successors, (1118), 282 states have call predecessors, (1118), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:48:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6556 transitions. [2022-07-13 23:48:34,484 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6556 transitions. Word has length 40 [2022-07-13 23:48:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:34,485 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 6556 transitions. [2022-07-13 23:48:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-13 23:48:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6556 transitions. [2022-07-13 23:48:34,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 23:48:34,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:34,488 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:34,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 23:48:34,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1387964180, now seen corresponding path program 1 times [2022-07-13 23:48:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:34,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760767505] [2022-07-13 23:48:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:34,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:48:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:34,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760767505] [2022-07-13 23:48:34,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760767505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:34,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:34,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430486075] [2022-07-13 23:48:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:34,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:34,634 INFO L87 Difference]: Start difference. First operand 4607 states and 6556 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-13 23:48:38,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:41,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:43,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:43,621 INFO L93 Difference]: Finished difference Result 4894 states and 7110 transitions. [2022-07-13 23:48:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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 41 [2022-07-13 23:48:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:43,640 INFO L225 Difference]: With dead ends: 4894 [2022-07-13 23:48:43,640 INFO L226 Difference]: Without dead ends: 4891 [2022-07-13 23:48:43,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:43,644 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1877 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:43,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1769 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-07-13 23:48:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2022-07-13 23:48:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4606. [2022-07-13 23:48:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3206 states have (on average 1.346849656893325) internal successors, (4318), 3358 states have internal predecessors, (4318), 1117 states have call successors, (1117), 282 states have call predecessors, (1117), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-13 23:48:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6554 transitions. [2022-07-13 23:48:43,866 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6554 transitions. Word has length 41 [2022-07-13 23:48:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:43,866 INFO L495 AbstractCegarLoop]: Abstraction has 4606 states and 6554 transitions. [2022-07-13 23:48:43,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-13 23:48:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6554 transitions. [2022-07-13 23:48:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 23:48:43,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:43,868 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:43,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 23:48:43,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash 76591766, now seen corresponding path program 1 times [2022-07-13 23:48:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:43,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559703104] [2022-07-13 23:48:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:48:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 23:48:44,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:44,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559703104] [2022-07-13 23:48:44,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559703104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:44,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:44,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:48:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957028494] [2022-07-13 23:48:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:44,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:48:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:48:44,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:48:44,005 INFO L87 Difference]: Start difference. First operand 4606 states and 6554 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-13 23:48:49,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:51,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:48:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:48:52,197 INFO L93 Difference]: Finished difference Result 4893 states and 7108 transitions. [2022-07-13 23:48:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:48:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 42 [2022-07-13 23:48:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:48:52,217 INFO L225 Difference]: With dead ends: 4893 [2022-07-13 23:48:52,217 INFO L226 Difference]: Without dead ends: 4862 [2022-07-13 23:48:52,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:48:52,222 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1875 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:48:52,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 1763 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-13 23:48:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-13 23:48:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4577. [2022-07-13 23:48:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3183 states have (on average 1.347785108388313) internal successors, (4290), 3334 states have internal predecessors, (4290), 1112 states have call successors, (1112), 281 states have call predecessors, (1112), 281 states have return successors, (1115), 1086 states have call predecessors, (1115), 1111 states have call successors, (1115) [2022-07-13 23:48:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6517 transitions. [2022-07-13 23:48:52,468 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6517 transitions. Word has length 42 [2022-07-13 23:48:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:48:52,469 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 6517 transitions. [2022-07-13 23:48:52,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-13 23:48:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6517 transitions. [2022-07-13 23:48:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 23:48:52,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:48:52,475 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:48:52,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 23:48:52,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:48:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:48:52,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635492, now seen corresponding path program 1 times [2022-07-13 23:48:52,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:48:52,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135289920] [2022-07-13 23:48:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:48:52,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:48:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 23:48:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 23:48:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 23:48:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 23:48:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:48:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:48:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:48:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 23:48:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 23:48:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 23:48:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 23:48:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:48:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 23:48:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:48:52,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135289920] [2022-07-13 23:48:52,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135289920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:48:52,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:48:52,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 23:48:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755699971] [2022-07-13 23:48:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:48:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:48:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:48:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:48:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 23:48:52,705 INFO L87 Difference]: Start difference. First operand 4577 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 23:49:01,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:03,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:06,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:09,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:09,967 INFO L93 Difference]: Finished difference Result 8505 states and 12595 transitions. [2022-07-13 23:49:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 23:49:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-13 23:49:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:09,980 INFO L225 Difference]: With dead ends: 8505 [2022-07-13 23:49:09,980 INFO L226 Difference]: Without dead ends: 3931 [2022-07-13 23:49:09,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-13 23:49:09,997 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 2244 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 1797 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:09,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 5272 Invalid, 5409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1797 Valid, 3610 Invalid, 2 Unknown, 0 Unchecked, 17.0s Time] [2022-07-13 23:49:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-07-13 23:49:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2780. [2022-07-13 23:49:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 1987 states have (on average 1.3714141922496226) internal successors, (2725), 2070 states have internal predecessors, (2725), 623 states have call successors, (623), 163 states have call predecessors, (623), 169 states have return successors, (650), 614 states have call predecessors, (650), 622 states have call successors, (650) [2022-07-13 23:49:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3998 transitions. [2022-07-13 23:49:10,170 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3998 transitions. Word has length 119 [2022-07-13 23:49:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:10,171 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3998 transitions. [2022-07-13 23:49:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 23:49:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3998 transitions. [2022-07-13 23:49:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 23:49:10,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:49:10,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:49:10,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 23:49:10,182 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:49:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:49:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1267868885, now seen corresponding path program 1 times [2022-07-13 23:49:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:49:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072522917] [2022-07-13 23:49:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:49:10,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:49:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 23:49:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 23:49:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 23:49:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 23:49:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 23:49:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:49:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 23:49:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 23:49:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 23:49:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 23:49:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 23:49:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 23:49:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:49:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 23:49:10,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:49:10,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072522917] [2022-07-13 23:49:10,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072522917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:49:10,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:49:10,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 23:49:10,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920188466] [2022-07-13 23:49:10,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:49:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 23:49:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:49:10,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 23:49:10,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:49:10,557 INFO L87 Difference]: Start difference. First operand 2780 states and 3998 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 23:49:17,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:21,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:23,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:25,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:26,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:49:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:49:28,229 INFO L93 Difference]: Finished difference Result 3882 states and 6023 transitions. [2022-07-13 23:49:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 23:49:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-07-13 23:49:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:49:28,231 INFO L225 Difference]: With dead ends: 3882 [2022-07-13 23:49:28,231 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 23:49:28,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-13 23:49:28,249 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 2022 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 4363 mSolverCounterSat, 1747 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 6114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1747 IncrementalHoareTripleChecker+Valid, 4363 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:49:28,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 4464 Invalid, 6114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1747 Valid, 4363 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2022-07-13 23:49:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 23:49:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 23:49:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 23:49:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 23:49:28,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-07-13 23:49:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:49:28,251 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 23:49:28,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 23:49:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 23:49:28,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 23:49:28,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 23:49:28,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 23:49:28,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.