./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 eb692b52 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-?-eb692b5 [2022-07-19 23:09:03,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:09:03,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:09:03,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:09:03,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:09:03,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:09:03,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:09:03,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:09:03,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:09:03,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:09:03,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:09:03,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:09:03,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:09:03,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:09:03,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:09:03,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:09:03,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:09:03,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:09:03,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:09:03,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:09:03,980 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:09:03,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:09:03,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:09:03,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:09:03,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:09:03,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:09:03,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:09:03,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:09:03,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:09:03,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:09:03,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:09:03,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:09:03,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:09:03,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:09:03,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:09:03,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:09:03,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:09:03,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:09:03,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:09:03,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:09:04,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:09:04,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:09:04,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:09:04,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:09:04,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:09:04,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:09:04,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:09:04,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:09:04,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:09:04,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:09:04,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:09:04,034 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:09:04,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:09:04,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:09:04,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:09:04,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:09:04,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:09:04,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:09:04,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:09:04,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:09:04,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:09:04,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:09:04,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:09:04,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:09:04,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:09:04,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:09:04,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:09:04,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:09:04,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:09:04,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:09:04,039 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:09:04,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:09:04,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:09:04,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-07-19 23:09:04,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:09:04,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:09:04,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:09:04,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:09:04,299 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:09:04,300 INFO L432 ainManager$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 [2022-07-19 23:09:04,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e623d9fb9/6312a5aca3d342d5a46fff879a4bec7c/FLAG35eabbe97 [2022-07-19 23:09:05,107 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:09:05,109 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 [2022-07-19 23:09:05,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e623d9fb9/6312a5aca3d342d5a46fff879a4bec7c/FLAG35eabbe97 [2022-07-19 23:09:05,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e623d9fb9/6312a5aca3d342d5a46fff879a4bec7c [2022-07-19 23:09:05,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:09:05,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:09:05,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:09:05,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:09:05,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:09:05,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:09:05" (1/1) ... [2022-07-19 23:09:05,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c96df8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:05, skipping insertion in model container [2022-07-19 23:09:05,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:09:05" (1/1) ... [2022-07-19 23:09:05,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:09:05,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:09:07,253 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] [2022-07-19 23:09:07,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:09:07,421 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:09:07,825 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] [2022-07-19 23:09:07,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:09:07,941 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:09:07,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07 WrapperNode [2022-07-19 23:09:07,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:09:07,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:09:07,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:09:07,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:09:07,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,130 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3344 [2022-07-19 23:09:08,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:09:08,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:09:08,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:09:08,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:09:08,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:09:08,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:09:08,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:09:08,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:09:08,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (1/1) ... [2022-07-19 23:09:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:09:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:09:08,416 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) [2022-07-19 23:09:08,437 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 [2022-07-19 23:09:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-07-19 23:09:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-07-19 23:09:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-19 23:09:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-19 23:09:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:09:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:09:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-07-19 23:09:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-07-19 23:09:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-07-19 23:09:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-07-19 23:09:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-19 23:09:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-19 23:09:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-07-19 23:09:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-07-19 23:09:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-07-19 23:09:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-07-19 23:09:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:09:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:09:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-19 23:09:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-19 23:09:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-19 23:09:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-19 23:09:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-19 23:09:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-19 23:09:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:09:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:09:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-07-19 23:09:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-07-19 23:09:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:09:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-19 23:09:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-19 23:09:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-07-19 23:09:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-07-19 23:09:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-19 23:09:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-19 23:09:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:09:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:09:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-07-19 23:09:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-07-19 23:09:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:09:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-07-19 23:09:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-07-19 23:09:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:09:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-19 23:09:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-19 23:09:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:09:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:09:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:09:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-07-19 23:09:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-07-19 23:09:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-19 23:09:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-19 23:09:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-19 23:09:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-19 23:09:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-07-19 23:09:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-07-19 23:09:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:09:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-07-19 23:09:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-07-19 23:09:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-19 23:09:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-19 23:09:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:09:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-07-19 23:09:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-07-19 23:09:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:09:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 23:09:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:09:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:09:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-07-19 23:09:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-07-19 23:09:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-19 23:09:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-19 23:09:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-19 23:09:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-19 23:09:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-07-19 23:09:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-07-19 23:09:08,474 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-07-19 23:09:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-07-19 23:09:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:09:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:09:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-07-19 23:09:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-07-19 23:09:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:09:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:09:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-07-19 23:09:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-19 23:09:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-19 23:09:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:09:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:09:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-07-19 23:09:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-07-19 23:09:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:09:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:09:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:09:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:09:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-19 23:09:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-19 23:09:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-07-19 23:09:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-07-19 23:09:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:09:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:09:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:09:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-19 23:09:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-19 23:09:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-07-19 23:09:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-07-19 23:09:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:09:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:09:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-07-19 23:09:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-07-19 23:09:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 23:09:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 23:09:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-07-19 23:09:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-07-19 23:09:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-19 23:09:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-19 23:09:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-07-19 23:09:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-07-19 23:09:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-07-19 23:09:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-07-19 23:09:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-19 23:09:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-19 23:09:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-19 23:09:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-19 23:09:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-07-19 23:09:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-07-19 23:09:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-19 23:09:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-19 23:09:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-07-19 23:09:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-07-19 23:09:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:09:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:09:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:09:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:09:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:09:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-07-19 23:09:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-07-19 23:09:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-07-19 23:09:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-07-19 23:09:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-19 23:09:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-19 23:09:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-19 23:09:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-19 23:09:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-07-19 23:09:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-07-19 23:09:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-19 23:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-19 23:09:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-07-19 23:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-07-19 23:09:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-19 23:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-19 23:09:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-19 23:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-19 23:09:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-19 23:09:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-19 23:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-07-19 23:09:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-07-19 23:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-07-19 23:09:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-07-19 23:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-07-19 23:09:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-07-19 23:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-07-19 23:09:08,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-07-19 23:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-19 23:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-19 23:09:08,497 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-19 23:09:09,056 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:09:09,058 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:09:17,353 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:09:17,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:09:17,372 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:09:17,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:09:17 BoogieIcfgContainer [2022-07-19 23:09:17,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:09:17,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:09:17,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:09:17,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:09:17,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:09:05" (1/3) ... [2022-07-19 23:09:17,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d29388a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:09:17, skipping insertion in model container [2022-07-19 23:09:17,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:09:07" (2/3) ... [2022-07-19 23:09:17,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d29388a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:09:17, skipping insertion in model container [2022-07-19 23:09:17,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:09:17" (3/3) ... [2022-07-19 23:09:17,383 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-19 23:09:17,395 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:09:17,395 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:09:17,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:09:17,484 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@5aa3ff43, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e22a924 [2022-07-19 23:09:17,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:09:17,492 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) [2022-07-19 23:09:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 23:09:17,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:17,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:09:17,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1353827036, now seen corresponding path program 1 times [2022-07-19 23:09:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472974464] [2022-07-19 23:09:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:17,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472974464] [2022-07-19 23:09:17,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472974464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:17,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:17,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:09:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304409604] [2022-07-19 23:09:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:09:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:09:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:09:18,038 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) [2022-07-19 23:09:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:18,394 INFO L93 Difference]: Finished difference Result 3675 states and 5434 transitions. [2022-07-19 23:09:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:09:18,397 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 [2022-07-19 23:09:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:18,436 INFO L225 Difference]: With dead ends: 3675 [2022-07-19 23:09:18,436 INFO L226 Difference]: Without dead ends: 2424 [2022-07-19 23:09:18,453 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 [2022-07-19 23:09:18,456 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:09:18,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 4583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:09:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-19 23:09:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2420. [2022-07-19 23:09:18,663 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) [2022-07-19 23:09:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3457 transitions. [2022-07-19 23:09:18,690 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3457 transitions. Word has length 16 [2022-07-19 23:09:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:18,690 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3457 transitions. [2022-07-19 23:09:18,691 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) [2022-07-19 23:09:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3457 transitions. [2022-07-19 23:09:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 23:09:18,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:18,695 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] [2022-07-19 23:09:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:09:18,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1697719892, now seen corresponding path program 1 times [2022-07-19 23:09:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:18,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125710044] [2022-07-19 23:09:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:18,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:09:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125710044] [2022-07-19 23:09:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125710044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:18,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:18,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:09:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733203571] [2022-07-19 23:09:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:09:18,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:18,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:09:18,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:09:18,902 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) [2022-07-19 23:09:31,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:09:34,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:09:36,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:09:38,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:09:43,474 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 [] [2022-07-19 23:09:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:44,924 INFO L93 Difference]: Finished difference Result 7503 states and 10878 transitions. [2022-07-19 23:09:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:09:44,925 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 [2022-07-19 23:09:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:44,961 INFO L225 Difference]: With dead ends: 7503 [2022-07-19 23:09:44,962 INFO L226 Difference]: Without dead ends: 5086 [2022-07-19 23:09:44,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:09:44,976 INFO L413 NwaCegarLoop]: 2080 mSDtfsCounter, 3078 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6525 mSolverCounterSat, 2062 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 8591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2062 IncrementalHoareTripleChecker+Valid, 6525 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:09:44,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3396 Valid, 2781 Invalid, 8591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2062 Valid, 6525 Invalid, 4 Unknown, 0 Unchecked, 25.6s Time] [2022-07-19 23:09:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-07-19 23:09:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4778. [2022-07-19 23:09:45,260 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) [2022-07-19 23:09:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6836 transitions. [2022-07-19 23:09:45,302 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6836 transitions. Word has length 23 [2022-07-19 23:09:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:45,302 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 6836 transitions. [2022-07-19 23:09:45,302 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) [2022-07-19 23:09:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6836 transitions. [2022-07-19 23:09:45,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 23:09:45,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:45,313 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] [2022-07-19 23:09:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:09:45,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1343888216, now seen corresponding path program 1 times [2022-07-19 23:09:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816460182] [2022-07-19 23:09:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:09:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:09:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:45,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816460182] [2022-07-19 23:09:45,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816460182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:45,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:45,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:09:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879915228] [2022-07-19 23:09:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:09:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:09:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:09:45,493 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) [2022-07-19 23:09:54,246 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 [] [2022-07-19 23:09:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:09:55,102 INFO L93 Difference]: Finished difference Result 9653 states and 13951 transitions. [2022-07-19 23:09:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:09:55,103 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 [2022-07-19 23:09:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:09:55,137 INFO L225 Difference]: With dead ends: 9653 [2022-07-19 23:09:55,138 INFO L226 Difference]: Without dead ends: 4878 [2022-07-19 23:09:55,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:09:55,165 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 2131 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 607 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:09:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 3115 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1921 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-07-19 23:09:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2022-07-19 23:09:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4590. [2022-07-19 23:09:55,362 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) [2022-07-19 23:09:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 6557 transitions. [2022-07-19 23:09:55,386 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 6557 transitions. Word has length 25 [2022-07-19 23:09:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:09:55,386 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 6557 transitions. [2022-07-19 23:09:55,386 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) [2022-07-19 23:09:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 6557 transitions. [2022-07-19 23:09:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 23:09:55,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:09:55,389 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] [2022-07-19 23:09:55,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:09:55,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:09:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:09:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1947073205, now seen corresponding path program 1 times [2022-07-19 23:09:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:09:55,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938777211] [2022-07-19 23:09:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:09:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:09:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:09:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:09:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:09:55,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:09:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938777211] [2022-07-19 23:09:55,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938777211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:09:55,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:09:55,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:09:55,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754582528] [2022-07-19 23:09:55,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:09:55,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:09:55,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:09:55,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:09:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:09:55,609 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) [2022-07-19 23:10:01,802 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 [] [2022-07-19 23:10:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:02,959 INFO L93 Difference]: Finished difference Result 4903 states and 7128 transitions. [2022-07-19 23:10:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:10:02,959 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 [2022-07-19 23:10:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:02,990 INFO L225 Difference]: With dead ends: 4903 [2022-07-19 23:10:02,991 INFO L226 Difference]: Without dead ends: 4899 [2022-07-19 23:10:02,996 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 [2022-07-19 23:10:02,997 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 1871 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 560 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:02,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 1807 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 1140 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-07-19 23:10:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-07-19 23:10:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4612. [2022-07-19 23:10:03,204 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) [2022-07-19 23:10:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6566 transitions. [2022-07-19 23:10:03,266 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6566 transitions. Word has length 35 [2022-07-19 23:10:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:03,267 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6566 transitions. [2022-07-19 23:10:03,267 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) [2022-07-19 23:10:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6566 transitions. [2022-07-19 23:10:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 23:10:03,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:03,269 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] [2022-07-19 23:10:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:10:03,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash -230381267, now seen corresponding path program 1 times [2022-07-19 23:10:03,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:03,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351340330] [2022-07-19 23:10:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351340330] [2022-07-19 23:10:03,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351340330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:03,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046948699] [2022-07-19 23:10:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:03,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:03,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:03,443 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) [2022-07-19 23:10:08,257 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 [] [2022-07-19 23:10:10,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:12,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:12,868 INFO L93 Difference]: Finished difference Result 4899 states and 7120 transitions. [2022-07-19 23:10:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:12,868 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 [2022-07-19 23:10:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:12,901 INFO L225 Difference]: With dead ends: 4899 [2022-07-19 23:10:12,901 INFO L226 Difference]: Without dead ends: 4896 [2022-07-19 23:10:12,907 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 [2022-07-19 23:10:12,908 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1890 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 537 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:12,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 1786 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1120 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-07-19 23:10:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2022-07-19 23:10:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4611. [2022-07-19 23:10:13,158 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) [2022-07-19 23:10:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6564 transitions. [2022-07-19 23:10:13,178 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6564 transitions. Word has length 36 [2022-07-19 23:10:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:13,179 INFO L495 AbstractCegarLoop]: Abstraction has 4611 states and 6564 transitions. [2022-07-19 23:10:13,179 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) [2022-07-19 23:10:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6564 transitions. [2022-07-19 23:10:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-19 23:10:13,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:13,183 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] [2022-07-19 23:10:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:10:13,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1447466126, now seen corresponding path program 1 times [2022-07-19 23:10:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:13,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512698958] [2022-07-19 23:10:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:13,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512698958] [2022-07-19 23:10:13,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512698958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:13,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:13,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817875669] [2022-07-19 23:10:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:13,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:13,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:13,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:13,332 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) [2022-07-19 23:10:17,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:19,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:20,746 INFO L93 Difference]: Finished difference Result 4898 states and 7118 transitions. [2022-07-19 23:10:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:20,747 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 [2022-07-19 23:10:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:20,797 INFO L225 Difference]: With dead ends: 4898 [2022-07-19 23:10:20,798 INFO L226 Difference]: Without dead ends: 4895 [2022-07-19 23:10:20,802 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 [2022-07-19 23:10:20,804 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1890 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 537 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:20,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1776 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-07-19 23:10:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2022-07-19 23:10:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4610. [2022-07-19 23:10:21,034 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) [2022-07-19 23:10:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6562 transitions. [2022-07-19 23:10:21,055 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6562 transitions. Word has length 37 [2022-07-19 23:10:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:21,056 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 6562 transitions. [2022-07-19 23:10:21,056 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) [2022-07-19 23:10:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6562 transitions. [2022-07-19 23:10:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 23:10:21,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:21,058 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] [2022-07-19 23:10:21,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:10:21,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:21,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:21,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1921132624, now seen corresponding path program 1 times [2022-07-19 23:10:21,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:21,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575652974] [2022-07-19 23:10:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:21,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:21,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575652974] [2022-07-19 23:10:21,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575652974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:21,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:21,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608184484] [2022-07-19 23:10:21,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:21,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:21,214 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) [2022-07-19 23:10:25,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:28,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:31,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:31,434 INFO L93 Difference]: Finished difference Result 4897 states and 7116 transitions. [2022-07-19 23:10:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:31,435 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 [2022-07-19 23:10:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:31,451 INFO L225 Difference]: With dead ends: 4897 [2022-07-19 23:10:31,452 INFO L226 Difference]: Without dead ends: 4894 [2022-07-19 23:10:31,454 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 [2022-07-19 23:10:31,454 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1886 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 534 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:31,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 1776 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1118 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2022-07-19 23:10:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2022-07-19 23:10:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4609. [2022-07-19 23:10:31,639 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) [2022-07-19 23:10:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 6560 transitions. [2022-07-19 23:10:31,658 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 6560 transitions. Word has length 38 [2022-07-19 23:10:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:31,659 INFO L495 AbstractCegarLoop]: Abstraction has 4609 states and 6560 transitions. [2022-07-19 23:10:31,659 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) [2022-07-19 23:10:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 6560 transitions. [2022-07-19 23:10:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 23:10:31,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:31,661 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] [2022-07-19 23:10:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:10:31,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -575070255, now seen corresponding path program 1 times [2022-07-19 23:10:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609753700] [2022-07-19 23:10:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:31,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609753700] [2022-07-19 23:10:31,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609753700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:31,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309946618] [2022-07-19 23:10:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:31,834 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) [2022-07-19 23:10:37,727 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 [] [2022-07-19 23:10:39,769 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 [] [2022-07-19 23:10:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:39,963 INFO L93 Difference]: Finished difference Result 4896 states and 7114 transitions. [2022-07-19 23:10:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:39,964 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 [2022-07-19 23:10:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:39,978 INFO L225 Difference]: With dead ends: 4896 [2022-07-19 23:10:39,978 INFO L226 Difference]: Without dead ends: 4893 [2022-07-19 23:10:39,979 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 [2022-07-19 23:10:39,980 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1883 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 535 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s 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, 8.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:39,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 1771 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1117 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-07-19 23:10:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-07-19 23:10:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4608. [2022-07-19 23:10:40,215 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) [2022-07-19 23:10:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6558 transitions. [2022-07-19 23:10:40,232 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6558 transitions. Word has length 39 [2022-07-19 23:10:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:40,233 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 6558 transitions. [2022-07-19 23:10:40,233 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) [2022-07-19 23:10:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6558 transitions. [2022-07-19 23:10:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 23:10:40,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:40,235 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] [2022-07-19 23:10:40,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:10:40,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash -647943309, now seen corresponding path program 1 times [2022-07-19 23:10:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:40,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491009456] [2022-07-19 23:10:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:40,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:40,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491009456] [2022-07-19 23:10:40,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491009456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:40,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:40,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:40,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181631141] [2022-07-19 23:10:40,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:40,387 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) [2022-07-19 23:10:44,615 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 [] [2022-07-19 23:10:47,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:49,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:50,390 INFO L93 Difference]: Finished difference Result 4895 states and 7112 transitions. [2022-07-19 23:10:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:50,391 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 [2022-07-19 23:10:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:50,408 INFO L225 Difference]: With dead ends: 4895 [2022-07-19 23:10:50,408 INFO L226 Difference]: Without dead ends: 4892 [2022-07-19 23:10:50,411 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 [2022-07-19 23:10:50,412 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1878 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 533 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:50,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 1771 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1116 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-07-19 23:10:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-07-19 23:10:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4607. [2022-07-19 23:10:50,624 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) [2022-07-19 23:10:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6556 transitions. [2022-07-19 23:10:50,647 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6556 transitions. Word has length 40 [2022-07-19 23:10:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:50,647 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 6556 transitions. [2022-07-19 23:10:50,647 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) [2022-07-19 23:10:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6556 transitions. [2022-07-19 23:10:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 23:10:50,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:50,649 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] [2022-07-19 23:10:50,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:10:50,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1387964180, now seen corresponding path program 1 times [2022-07-19 23:10:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:50,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951517540] [2022-07-19 23:10:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951517540] [2022-07-19 23:10:50,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951517540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:50,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:50,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460253138] [2022-07-19 23:10:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:50,828 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) [2022-07-19 23:10:55,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:58,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:10:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:10:59,144 INFO L93 Difference]: Finished difference Result 4894 states and 7110 transitions. [2022-07-19 23:10:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:10:59,145 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 [2022-07-19 23:10:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:10:59,163 INFO L225 Difference]: With dead ends: 4894 [2022-07-19 23:10:59,164 INFO L226 Difference]: Without dead ends: 4891 [2022-07-19 23:10:59,167 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 [2022-07-19 23:10:59,168 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1877 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s 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, 8.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:10:59,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1769 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-07-19 23:10:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2022-07-19 23:10:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4606. [2022-07-19 23:10:59,377 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) [2022-07-19 23:10:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6554 transitions. [2022-07-19 23:10:59,395 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6554 transitions. Word has length 41 [2022-07-19 23:10:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:10:59,397 INFO L495 AbstractCegarLoop]: Abstraction has 4606 states and 6554 transitions. [2022-07-19 23:10:59,397 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) [2022-07-19 23:10:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6554 transitions. [2022-07-19 23:10:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:10:59,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:10:59,399 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] [2022-07-19 23:10:59,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:10:59,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:10:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:10:59,400 INFO L85 PathProgramCache]: Analyzing trace with hash 76591766, now seen corresponding path program 1 times [2022-07-19 23:10:59,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:10:59,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792736556] [2022-07-19 23:10:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:10:59,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:10:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:10:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:10:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 23:10:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:10:59,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792736556] [2022-07-19 23:10:59,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792736556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:10:59,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:10:59,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:10:59,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714924374] [2022-07-19 23:10:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:10:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:10:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:10:59,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:10:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:10:59,582 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) [2022-07-19 23:11:06,717 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 [] [2022-07-19 23:11:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:07,172 INFO L93 Difference]: Finished difference Result 4893 states and 7108 transitions. [2022-07-19 23:11:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:11:07,173 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 [2022-07-19 23:11:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:07,198 INFO L225 Difference]: With dead ends: 4893 [2022-07-19 23:11:07,198 INFO L226 Difference]: Without dead ends: 4862 [2022-07-19 23:11:07,205 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 [2022-07-19 23:11:07,206 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 1875 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 532 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:07,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1765 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-07-19 23:11:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-19 23:11:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4577. [2022-07-19 23:11:07,442 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) [2022-07-19 23:11:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6517 transitions. [2022-07-19 23:11:07,459 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6517 transitions. Word has length 42 [2022-07-19 23:11:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:07,459 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 6517 transitions. [2022-07-19 23:11:07,459 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) [2022-07-19 23:11:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6517 transitions. [2022-07-19 23:11:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 23:11:07,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:07,467 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] [2022-07-19 23:11:07,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:11:07,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635492, now seen corresponding path program 1 times [2022-07-19 23:11:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:07,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313049108] [2022-07-19 23:11:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:11:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:11:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:11:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 23:11:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:11:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 23:11:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 23:11:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:11:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:11:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 23:11:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 23:11:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313049108] [2022-07-19 23:11:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313049108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:07,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:07,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:11:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395244291] [2022-07-19 23:11:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:11:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:11:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:11:07,697 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) [2022-07-19 23:11:15,937 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 [] [2022-07-19 23:11:19,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:23,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:25,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:27,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:29,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:31,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:31,252 INFO L93 Difference]: Finished difference Result 8505 states and 12595 transitions. [2022-07-19 23:11:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:11:31,253 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 [2022-07-19 23:11:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:31,270 INFO L225 Difference]: With dead ends: 8505 [2022-07-19 23:11:31,271 INFO L226 Difference]: Without dead ends: 3931 [2022-07-19 23:11:31,294 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 [2022-07-19 23:11:31,295 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 2242 mSDsluCounter, 3666 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 1807 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 5365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1807 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:31,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 5282 Invalid, 5365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1807 Valid, 3553 Invalid, 5 Unknown, 0 Unchecked, 23.2s Time] [2022-07-19 23:11:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-07-19 23:11:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2780. [2022-07-19 23:11:31,523 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) [2022-07-19 23:11:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3998 transitions. [2022-07-19 23:11:31,535 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3998 transitions. Word has length 119 [2022-07-19 23:11:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:31,535 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3998 transitions. [2022-07-19 23:11:31,535 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) [2022-07-19 23:11:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3998 transitions. [2022-07-19 23:11:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 23:11:31,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:11:31,546 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] [2022-07-19 23:11:31,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:11:31,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:11:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:11:31,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1267868885, now seen corresponding path program 1 times [2022-07-19 23:11:31,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:11:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779738642] [2022-07-19 23:11:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:11:31,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:11:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 23:11:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:11:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:11:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 23:11:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:11:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:11:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:11:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:11:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 23:11:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 23:11:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:11:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:11:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:11:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:11:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:11:31,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779738642] [2022-07-19 23:11:31,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779738642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:11:31,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:11:31,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:11:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066707988] [2022-07-19 23:11:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:11:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:11:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:11:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:11:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:11:31,959 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) [2022-07-19 23:11:39,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:44,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:45,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:11:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:11:48,695 INFO L93 Difference]: Finished difference Result 3882 states and 6023 transitions. [2022-07-19 23:11:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:11:48,696 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 [2022-07-19 23:11:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:11:48,698 INFO L225 Difference]: With dead ends: 3882 [2022-07-19 23:11:48,698 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 23:11:48,721 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 [2022-07-19 23:11:48,754 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 2026 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 1755 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 6105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1755 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:11:48,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 4474 Invalid, 6105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1755 Valid, 4348 Invalid, 2 Unknown, 0 Unchecked, 16.4s Time] [2022-07-19 23:11:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 23:11:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 23:11:48,755 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) [2022-07-19 23:11:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 23:11:48,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-07-19 23:11:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:11:48,756 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 23:11:48,756 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) [2022-07-19 23:11:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 23:11:48,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 23:11:48,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 23:11:48,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 23:11:48,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 23:11:54,396 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)