./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/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-?-791161d [2022-07-22 23:23:05,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:23:05,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:23:05,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:23:05,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:23:05,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:23:05,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:23:05,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:23:05,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:23:05,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:23:05,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:23:05,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:23:05,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:23:05,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:23:05,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:23:05,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:23:05,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:23:05,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:23:05,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:23:05,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:23:05,099 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:23:05,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:23:05,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:23:05,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:23:05,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:23:05,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:23:05,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:23:05,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:23:05,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:23:05,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:23:05,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:23:05,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:23:05,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:23:05,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:23:05,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:23:05,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:23:05,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:23:05,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:23:05,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:23:05,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:23:05,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:23:05,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:23:05,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:23:05,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:23:05,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:23:05,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:23:05,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:23:05,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:23:05,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:23:05,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:23:05,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:23:05,137 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:23:05,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:23:05,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:23:05,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:23:05,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:23:05,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:23:05,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:23:05,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:23:05,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:05,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:23:05,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:23:05,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:23:05,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:23:05,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:23:05,140 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:23:05,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:23:05,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:23:05,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-07-22 23:23:05,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:23:05,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:23:05,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:23:05,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:23:05,357 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:23:05,358 INFO L432 ainManager$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 [2022-07-22 23:23:05,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a19f63e4/cc7aa070ba754e85aaf00122e2c0394a/FLAG8e81ec471 [2022-07-22 23:23:05,991 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:23:05,992 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 [2022-07-22 23:23:06,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a19f63e4/cc7aa070ba754e85aaf00122e2c0394a/FLAG8e81ec471 [2022-07-22 23:23:06,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a19f63e4/cc7aa070ba754e85aaf00122e2c0394a [2022-07-22 23:23:06,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:23:06,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:23:06,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:06,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:23:06,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:23:06,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:06" (1/1) ... [2022-07-22 23:23:06,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e650c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:06, skipping insertion in model container [2022-07-22 23:23:06,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:06" (1/1) ... [2022-07-22 23:23:06,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:23:06,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:23:07,802 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] [2022-07-22 23:23:07,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:07,921 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:23:08,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-22 23:23:08,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:08,283 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:23:08,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08 WrapperNode [2022-07-22 23:23:08,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:08,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:08,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:23:08,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:23:08,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,460 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3344 [2022-07-22 23:23:08,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:08,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:23:08,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:23:08,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:23:08,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:23:08,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:23:08,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:23:08,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:23:08,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (1/1) ... [2022-07-22 23:23:08,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:23:08,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:23:08,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:23:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-07-22 23:23:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-07-22 23:23:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 23:23:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 23:23:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:23:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:23:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-07-22 23:23:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-07-22 23:23:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-07-22 23:23:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-07-22 23:23:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:23:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:23:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-07-22 23:23:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-07-22 23:23:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-07-22 23:23:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-07-22 23:23:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:23:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:23:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-22 23:23:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-22 23:23:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-22 23:23:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-22 23:23:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-22 23:23:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-22 23:23:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:23:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:23:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-07-22 23:23:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-07-22 23:23:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:23:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-22 23:23:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-22 23:23:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-07-22 23:23:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-07-22 23:23:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-22 23:23:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-22 23:23:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:23:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:23:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-07-22 23:23:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-07-22 23:23:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:23:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-07-22 23:23:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-07-22 23:23:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:23:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-22 23:23:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-22 23:23:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:23:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:23:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:23:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-07-22 23:23:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-07-22 23:23:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-22 23:23:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-22 23:23:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-22 23:23:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-22 23:23:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-07-22 23:23:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-07-22 23:23:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:23:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-07-22 23:23:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-07-22 23:23:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-22 23:23:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-22 23:23:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:23:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-07-22 23:23:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-07-22 23:23:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:23:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:23:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:23:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:23:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-07-22 23:23:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-07-22 23:23:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-22 23:23:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-22 23:23:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-22 23:23:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-22 23:23:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-07-22 23:23:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-07-22 23:23:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-07-22 23:23:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-07-22 23:23:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:23:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:23:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-07-22 23:23:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-07-22 23:23:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:23:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:23:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-07-22 23:23:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-22 23:23:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-22 23:23:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:23:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:23:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-07-22 23:23:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-07-22 23:23:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:23:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:23:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:23:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:23:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-22 23:23:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-22 23:23:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-07-22 23:23:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-07-22 23:23:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:23:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:23:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:23:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:23:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:23:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-07-22 23:23:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-07-22 23:23:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:23:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:23:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-07-22 23:23:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-07-22 23:23:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:23:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:23:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-07-22 23:23:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-07-22 23:23:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-22 23:23:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-22 23:23:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-07-22 23:23:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-07-22 23:23:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-07-22 23:23:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-07-22 23:23:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-22 23:23:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-22 23:23:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-22 23:23:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-22 23:23:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-07-22 23:23:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-07-22 23:23:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:23:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:23:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-07-22 23:23:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-07-22 23:23:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:23:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:23:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:23:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:23:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:23:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-07-22 23:23:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-07-22 23:23:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-07-22 23:23:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-07-22 23:23:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-22 23:23:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-22 23:23:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-22 23:23:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-22 23:23:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-07-22 23:23:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-07-22 23:23:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-22 23:23:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-22 23:23:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-07-22 23:23:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-07-22 23:23:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-22 23:23:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-22 23:23:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-22 23:23:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-22 23:23:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 23:23:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 23:23:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-07-22 23:23:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-07-22 23:23:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-07-22 23:23:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-07-22 23:23:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-07-22 23:23:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-07-22 23:23:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:23:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-07-22 23:23:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-07-22 23:23:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-22 23:23:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-22 23:23:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-22 23:23:09,167 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:23:09,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:23:16,420 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:23:16,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:23:16,440 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:23:16,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:16 BoogieIcfgContainer [2022-07-22 23:23:16,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:23:16,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:23:16,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:23:16,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:23:16,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:23:06" (1/3) ... [2022-07-22 23:23:16,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02d508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:16, skipping insertion in model container [2022-07-22 23:23:16,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:08" (2/3) ... [2022-07-22 23:23:16,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02d508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:16, skipping insertion in model container [2022-07-22 23:23:16,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:16" (3/3) ... [2022-07-22 23:23:16,451 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-22 23:23:16,462 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:23:16,462 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:23:16,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:23:16,538 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@1e300cdc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35fa903d [2022-07-22 23:23:16,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:23:16,545 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) [2022-07-22 23:23:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-22 23:23:16,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:16,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:23:16,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1353827036, now seen corresponding path program 1 times [2022-07-22 23:23:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:16,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387190257] [2022-07-22 23:23:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:17,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:17,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387190257] [2022-07-22 23:23:17,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387190257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:17,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:23:17,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241448852] [2022-07-22 23:23:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:17,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:23:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:23:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:23:17,102 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) [2022-07-22 23:23:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:17,330 INFO L93 Difference]: Finished difference Result 3675 states and 5434 transitions. [2022-07-22 23:23:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:23:17,332 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 [2022-07-22 23:23:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:17,364 INFO L225 Difference]: With dead ends: 3675 [2022-07-22 23:23:17,364 INFO L226 Difference]: Without dead ends: 2424 [2022-07-22 23:23:17,378 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 [2022-07-22 23:23:17,381 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 1711 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:17,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 4583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:23:17,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-22 23:23:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2420. [2022-07-22 23:23:17,519 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) [2022-07-22 23:23:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3457 transitions. [2022-07-22 23:23:17,533 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3457 transitions. Word has length 16 [2022-07-22 23:23:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:17,534 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3457 transitions. [2022-07-22 23:23:17,534 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) [2022-07-22 23:23:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3457 transitions. [2022-07-22 23:23:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 23:23:17,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:17,541 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] [2022-07-22 23:23:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:23:17,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1697719892, now seen corresponding path program 1 times [2022-07-22 23:23:17,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914810344] [2022-07-22 23:23:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:23:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:17,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914810344] [2022-07-22 23:23:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914810344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:17,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:17,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:23:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785297897] [2022-07-22 23:23:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:17,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:23:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:23:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:23:17,727 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) [2022-07-22 23:23:26,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:30,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:32,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:34,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:36,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:37,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:41,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:44,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:45,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:46,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:47,249 INFO L93 Difference]: Finished difference Result 7509 states and 10888 transitions. [2022-07-22 23:23:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:23:47,249 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 [2022-07-22 23:23:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:47,276 INFO L225 Difference]: With dead ends: 7509 [2022-07-22 23:23:47,276 INFO L226 Difference]: Without dead ends: 5092 [2022-07-22 23:23:47,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:23:47,300 INFO L413 NwaCegarLoop]: 2083 mSDtfsCounter, 3080 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6517 mSolverCounterSat, 2068 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 8589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2068 IncrementalHoareTripleChecker+Valid, 6517 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:47,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 2784 Invalid, 8589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2068 Valid, 6517 Invalid, 4 Unknown, 0 Unchecked, 29.1s Time] [2022-07-22 23:23:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2022-07-22 23:23:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 4784. [2022-07-22 23:23:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 3338 states have (on average 1.3556021569802277) internal successors, (4525), 3504 states have internal predecessors, (4525), 1163 states have call successors, (1163), 282 states have call predecessors, (1163), 282 states have return successors, (1156), 1129 states have call predecessors, (1156), 1153 states have call successors, (1156) [2022-07-22 23:23:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6844 transitions. [2022-07-22 23:23:47,465 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6844 transitions. Word has length 23 [2022-07-22 23:23:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:47,466 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 6844 transitions. [2022-07-22 23:23:47,466 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) [2022-07-22 23:23:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6844 transitions. [2022-07-22 23:23:47,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 23:23:47,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:47,468 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] [2022-07-22 23:23:47,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:23:47,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1343888216, now seen corresponding path program 1 times [2022-07-22 23:23:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:47,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042749079] [2022-07-22 23:23:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:23:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042749079] [2022-07-22 23:23:47,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042749079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:47,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:47,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:23:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386162954] [2022-07-22 23:23:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:23:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:23:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:23:47,596 INFO L87 Difference]: Start difference. First operand 4784 states and 6844 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) [2022-07-22 23:23:55,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:57,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:23:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:58,297 INFO L93 Difference]: Finished difference Result 8605 states and 12422 transitions. [2022-07-22 23:23:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:58,298 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 [2022-07-22 23:23:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:58,315 INFO L225 Difference]: With dead ends: 8605 [2022-07-22 23:23:58,316 INFO L226 Difference]: Without dead ends: 3824 [2022-07-22 23:23:58,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:23:58,329 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 2131 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 605 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 3115 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1920 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-07-22 23:23:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2022-07-22 23:23:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 3608. [2022-07-22 23:23:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2517 states have (on average 1.3543901470003974) internal successors, (3409), 2644 states have internal predecessors, (3409), 877 states have call successors, (877), 213 states have call predecessors, (877), 213 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:23:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5156 transitions. [2022-07-22 23:23:58,450 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5156 transitions. Word has length 25 [2022-07-22 23:23:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:58,452 INFO L495 AbstractCegarLoop]: Abstraction has 3608 states and 5156 transitions. [2022-07-22 23:23:58,452 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) [2022-07-22 23:23:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5156 transitions. [2022-07-22 23:23:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 23:23:58,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:58,454 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] [2022-07-22 23:23:58,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:23:58,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1947073205, now seen corresponding path program 1 times [2022-07-22 23:23:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:58,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567883610] [2022-07-22 23:23:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:58,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:23:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:23:58,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:58,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567883610] [2022-07-22 23:23:58,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567883610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:58,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:58,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958479905] [2022-07-22 23:23:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:58,647 INFO L87 Difference]: Start difference. First operand 3608 states and 5156 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) [2022-07-22 23:24:03,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:05,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:05,521 INFO L93 Difference]: Finished difference Result 3846 states and 5591 transitions. [2022-07-22 23:24:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:05,521 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 [2022-07-22 23:24:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:05,540 INFO L225 Difference]: With dead ends: 3846 [2022-07-22 23:24:05,540 INFO L226 Difference]: Without dead ends: 3842 [2022-07-22 23:24:05,543 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 [2022-07-22 23:24:05,545 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 1872 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:05,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 1803 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-07-22 23:24:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-07-22 23:24:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3624. [2022-07-22 23:24:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 2529 states have (on average 1.3511269276393831) internal successors, (3417), 2654 states have internal predecessors, (3417), 875 states have call successors, (875), 219 states have call predecessors, (875), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5162 transitions. [2022-07-22 23:24:05,794 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5162 transitions. Word has length 35 [2022-07-22 23:24:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:05,795 INFO L495 AbstractCegarLoop]: Abstraction has 3624 states and 5162 transitions. [2022-07-22 23:24:05,795 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) [2022-07-22 23:24:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5162 transitions. [2022-07-22 23:24:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 23:24:05,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:05,798 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] [2022-07-22 23:24:05,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:24:05,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -230381267, now seen corresponding path program 1 times [2022-07-22 23:24:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:05,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306410434] [2022-07-22 23:24:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:05,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306410434] [2022-07-22 23:24:05,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306410434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:05,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:05,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933884046] [2022-07-22 23:24:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:05,969 INFO L87 Difference]: Start difference. First operand 3624 states and 5162 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) [2022-07-22 23:24:12,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:14,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:14,465 INFO L93 Difference]: Finished difference Result 3842 states and 5584 transitions. [2022-07-22 23:24:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:14,465 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 [2022-07-22 23:24:14,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:14,481 INFO L225 Difference]: With dead ends: 3842 [2022-07-22 23:24:14,482 INFO L226 Difference]: Without dead ends: 3839 [2022-07-22 23:24:14,484 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 [2022-07-22 23:24:14,484 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1893 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 538 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:14,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1779 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1117 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-07-22 23:24:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-07-22 23:24:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3623. [2022-07-22 23:24:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2529 states have (on average 1.350731514432582) internal successors, (3416), 2653 states have internal predecessors, (3416), 874 states have call successors, (874), 219 states have call predecessors, (874), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5160 transitions. [2022-07-22 23:24:14,599 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5160 transitions. Word has length 36 [2022-07-22 23:24:14,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:14,599 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5160 transitions. [2022-07-22 23:24:14,599 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) [2022-07-22 23:24:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5160 transitions. [2022-07-22 23:24:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 23:24:14,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:14,601 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] [2022-07-22 23:24:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:24:14,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1447466126, now seen corresponding path program 1 times [2022-07-22 23:24:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895870260] [2022-07-22 23:24:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:14,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:14,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895870260] [2022-07-22 23:24:14,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895870260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:14,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:14,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632149307] [2022-07-22 23:24:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:14,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:14,790 INFO L87 Difference]: Start difference. First operand 3623 states and 5160 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) [2022-07-22 23:24:19,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:22,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:22,506 INFO L93 Difference]: Finished difference Result 3841 states and 5582 transitions. [2022-07-22 23:24:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:22,507 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 [2022-07-22 23:24:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:22,521 INFO L225 Difference]: With dead ends: 3841 [2022-07-22 23:24:22,521 INFO L226 Difference]: Without dead ends: 3838 [2022-07-22 23:24:22,523 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 [2022-07-22 23:24:22,525 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1889 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 537 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:22,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 1777 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-07-22 23:24:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2022-07-22 23:24:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3622. [2022-07-22 23:24:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2529 states have (on average 1.3503361012257808) internal successors, (3415), 2652 states have internal predecessors, (3415), 873 states have call successors, (873), 219 states have call predecessors, (873), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5158 transitions. [2022-07-22 23:24:22,667 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5158 transitions. Word has length 37 [2022-07-22 23:24:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:22,669 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 5158 transitions. [2022-07-22 23:24:22,669 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) [2022-07-22 23:24:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5158 transitions. [2022-07-22 23:24:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 23:24:22,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:22,671 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] [2022-07-22 23:24:22,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:24:22,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:22,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1921132624, now seen corresponding path program 1 times [2022-07-22 23:24:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:22,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087085735] [2022-07-22 23:24:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:22,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:22,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:22,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087085735] [2022-07-22 23:24:22,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087085735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:22,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:22,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519515592] [2022-07-22 23:24:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:22,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:22,784 INFO L87 Difference]: Start difference. First operand 3622 states and 5158 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) [2022-07-22 23:24:28,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:29,747 INFO L93 Difference]: Finished difference Result 3840 states and 5580 transitions. [2022-07-22 23:24:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:29,748 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 [2022-07-22 23:24:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:29,778 INFO L225 Difference]: With dead ends: 3840 [2022-07-22 23:24:29,778 INFO L226 Difference]: Without dead ends: 3837 [2022-07-22 23:24:29,781 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 [2022-07-22 23:24:29,781 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1886 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 536 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:29,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1774 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-07-22 23:24:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-07-22 23:24:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3621. [2022-07-22 23:24:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 2529 states have (on average 1.34994068801898) internal successors, (3414), 2651 states have internal predecessors, (3414), 872 states have call successors, (872), 219 states have call predecessors, (872), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5156 transitions. [2022-07-22 23:24:29,893 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5156 transitions. Word has length 38 [2022-07-22 23:24:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:29,894 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 5156 transitions. [2022-07-22 23:24:29,894 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) [2022-07-22 23:24:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5156 transitions. [2022-07-22 23:24:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:24:29,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:29,895 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] [2022-07-22 23:24:29,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:24:29,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -575070255, now seen corresponding path program 1 times [2022-07-22 23:24:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:29,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762105564] [2022-07-22 23:24:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:30,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:30,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762105564] [2022-07-22 23:24:30,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762105564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:30,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:30,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150607797] [2022-07-22 23:24:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:30,033 INFO L87 Difference]: Start difference. First operand 3621 states and 5156 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) [2022-07-22 23:24:36,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:37,269 INFO L93 Difference]: Finished difference Result 3839 states and 5578 transitions. [2022-07-22 23:24:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:37,269 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 [2022-07-22 23:24:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:37,281 INFO L225 Difference]: With dead ends: 3839 [2022-07-22 23:24:37,281 INFO L226 Difference]: Without dead ends: 3836 [2022-07-22 23:24:37,282 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 [2022-07-22 23:24:37,283 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1883 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:37,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1769 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1115 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-07-22 23:24:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2022-07-22 23:24:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3620. [2022-07-22 23:24:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 2529 states have (on average 1.3495452748121788) internal successors, (3413), 2650 states have internal predecessors, (3413), 871 states have call successors, (871), 219 states have call predecessors, (871), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5154 transitions. [2022-07-22 23:24:37,413 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5154 transitions. Word has length 39 [2022-07-22 23:24:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:37,414 INFO L495 AbstractCegarLoop]: Abstraction has 3620 states and 5154 transitions. [2022-07-22 23:24:37,414 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) [2022-07-22 23:24:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5154 transitions. [2022-07-22 23:24:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 23:24:37,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:37,416 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] [2022-07-22 23:24:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:24:37,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash -647943309, now seen corresponding path program 1 times [2022-07-22 23:24:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594876633] [2022-07-22 23:24:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:37,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594876633] [2022-07-22 23:24:37,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594876633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:37,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:37,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315944088] [2022-07-22 23:24:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:37,531 INFO L87 Difference]: Start difference. First operand 3620 states and 5154 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) [2022-07-22 23:24:43,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:44,275 INFO L93 Difference]: Finished difference Result 3838 states and 5576 transitions. [2022-07-22 23:24:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:44,275 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 [2022-07-22 23:24:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:44,317 INFO L225 Difference]: With dead ends: 3838 [2022-07-22 23:24:44,330 INFO L226 Difference]: Without dead ends: 3835 [2022-07-22 23:24:44,334 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 [2022-07-22 23:24:44,334 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1881 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 1768 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1119 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-07-22 23:24:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2022-07-22 23:24:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3619. [2022-07-22 23:24:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 2529 states have (on average 1.3491498616053776) internal successors, (3412), 2649 states have internal predecessors, (3412), 870 states have call successors, (870), 219 states have call predecessors, (870), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5152 transitions. [2022-07-22 23:24:44,441 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5152 transitions. Word has length 40 [2022-07-22 23:24:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 3619 states and 5152 transitions. [2022-07-22 23:24:44,441 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) [2022-07-22 23:24:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5152 transitions. [2022-07-22 23:24:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:24:44,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:44,443 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] [2022-07-22 23:24:44,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:24:44,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1387964180, now seen corresponding path program 1 times [2022-07-22 23:24:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:44,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79309506] [2022-07-22 23:24:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:44,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79309506] [2022-07-22 23:24:44,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79309506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:44,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:44,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987953070] [2022-07-22 23:24:44,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:44,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:44,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:44,577 INFO L87 Difference]: Start difference. First operand 3619 states and 5152 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) [2022-07-22 23:24:48,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:51,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:53,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:24:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:53,993 INFO L93 Difference]: Finished difference Result 3837 states and 5574 transitions. [2022-07-22 23:24:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:24:53,994 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 [2022-07-22 23:24:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:54,002 INFO L225 Difference]: With dead ends: 3837 [2022-07-22 23:24:54,003 INFO L226 Difference]: Without dead ends: 3834 [2022-07-22 23:24:54,003 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 [2022-07-22 23:24:54,004 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1875 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 532 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:54,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1770 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1118 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-07-22 23:24:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2022-07-22 23:24:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3618. [2022-07-22 23:24:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2529 states have (on average 1.3487544483985765) internal successors, (3411), 2648 states have internal predecessors, (3411), 869 states have call successors, (869), 219 states have call predecessors, (869), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-07-22 23:24:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5150 transitions. [2022-07-22 23:24:54,137 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5150 transitions. Word has length 41 [2022-07-22 23:24:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:54,138 INFO L495 AbstractCegarLoop]: Abstraction has 3618 states and 5150 transitions. [2022-07-22 23:24:54,139 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) [2022-07-22 23:24:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5150 transitions. [2022-07-22 23:24:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 23:24:54,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:54,141 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] [2022-07-22 23:24:54,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:24:54,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 76591766, now seen corresponding path program 1 times [2022-07-22 23:24:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:54,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842945466] [2022-07-22 23:24:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:24:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:24:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:54,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842945466] [2022-07-22 23:24:54,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842945466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:54,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:54,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663083705] [2022-07-22 23:24:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:54,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:54,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:54,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:54,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:54,262 INFO L87 Difference]: Start difference. First operand 3618 states and 5150 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) [2022-07-22 23:25:00,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:02,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:02,682 INFO L93 Difference]: Finished difference Result 3836 states and 5572 transitions. [2022-07-22 23:25:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:25:02,682 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 [2022-07-22 23:25:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:02,695 INFO L225 Difference]: With dead ends: 3836 [2022-07-22 23:25:02,695 INFO L226 Difference]: Without dead ends: 3805 [2022-07-22 23:25:02,699 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 [2022-07-22 23:25:02,700 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 1875 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 532 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:02,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1761 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-07-22 23:25:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-07-22 23:25:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3589. [2022-07-22 23:25:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 2506 states have (on average 1.3499600957701516) internal successors, (3383), 2624 states have internal predecessors, (3383), 864 states have call successors, (864), 218 states have call predecessors, (864), 218 states have return successors, (866), 845 states have call predecessors, (866), 863 states have call successors, (866) [2022-07-22 23:25:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5113 transitions. [2022-07-22 23:25:02,876 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5113 transitions. Word has length 42 [2022-07-22 23:25:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:02,876 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 5113 transitions. [2022-07-22 23:25:02,876 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) [2022-07-22 23:25:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5113 transitions. [2022-07-22 23:25:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 23:25:02,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:02,882 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] [2022-07-22 23:25:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:25:02,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635492, now seen corresponding path program 1 times [2022-07-22 23:25:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121237249] [2022-07-22 23:25:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:25:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:25:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:02,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:25:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 23:25:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:25:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:25:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 23:25:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 23:25:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:25:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:25:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 23:25:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121237249] [2022-07-22 23:25:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121237249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:03,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:25:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714577446] [2022-07-22 23:25:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:25:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:25:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:25:03,105 INFO L87 Difference]: Start difference. First operand 3589 states and 5113 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) [2022-07-22 23:25:13,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:15,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:17,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:20,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:20,697 INFO L93 Difference]: Finished difference Result 7517 states and 11185 transitions. [2022-07-22 23:25:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:25:20,697 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 [2022-07-22 23:25:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:20,708 INFO L225 Difference]: With dead ends: 7517 [2022-07-22 23:25:20,708 INFO L226 Difference]: Without dead ends: 3931 [2022-07-22 23:25:20,721 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 [2022-07-22 23:25:20,721 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1477 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 776 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 5942 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:20,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 5942 Invalid, 5161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 4384 Invalid, 1 Unknown, 0 Unchecked, 17.3s Time] [2022-07-22 23:25:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-07-22 23:25:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2645. [2022-07-22 23:25:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 1876 states have (on average 1.3635394456289978) internal successors, (2558), 1955 states have internal predecessors, (2558), 605 states have call successors, (605), 163 states have call predecessors, (605), 163 states have return successors, (607), 592 states have call predecessors, (607), 604 states have call successors, (607) [2022-07-22 23:25:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3770 transitions. [2022-07-22 23:25:20,854 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3770 transitions. Word has length 119 [2022-07-22 23:25:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:20,854 INFO L495 AbstractCegarLoop]: Abstraction has 2645 states and 3770 transitions. [2022-07-22 23:25:20,854 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) [2022-07-22 23:25:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3770 transitions. [2022-07-22 23:25:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 23:25:20,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:25:20,859 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] [2022-07-22 23:25:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:25:20,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:25:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:25:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1267868885, now seen corresponding path program 1 times [2022-07-22 23:25:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:25:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351859984] [2022-07-22 23:25:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:25:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:25:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:25:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:25:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:25:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:25:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:25:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:25:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:25:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:25:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 23:25:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:25:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 23:25:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 23:25:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:25:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 23:25:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:25:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351859984] [2022-07-22 23:25:21,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351859984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:25:21,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:25:21,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:25:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127890226] [2022-07-22 23:25:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:25:21,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:25:21,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:25:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:25:21,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:25:21,172 INFO L87 Difference]: Start difference. First operand 2645 states and 3770 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) [2022-07-22 23:25:28,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:29,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:33,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:34,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:36,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:38,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:41,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:25:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:25:41,733 INFO L93 Difference]: Finished difference Result 3888 states and 6037 transitions. [2022-07-22 23:25:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:25:41,733 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 [2022-07-22 23:25:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:25:41,734 INFO L225 Difference]: With dead ends: 3888 [2022-07-22 23:25:41,735 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 23:25:41,747 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 [2022-07-22 23:25:41,748 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 2051 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1754 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 4369 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1754 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:25:41,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 4369 Invalid, 6178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1754 Valid, 4421 Invalid, 3 Unknown, 0 Unchecked, 20.2s Time] [2022-07-22 23:25:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 23:25:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 23:25:41,749 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) [2022-07-22 23:25:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 23:25:41,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-07-22 23:25:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:25:41,750 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 23:25:41,750 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) [2022-07-22 23:25:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 23:25:41,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 23:25:41,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 23:25:41,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:25:41,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 23:25:50,505 WARN L233 SmtUtils]: Spent 7.63s 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) [2022-07-22 23:25:58,862 WARN L233 SmtUtils]: Spent 7.54s 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) [2022-07-22 23:26:07,908 WARN L233 SmtUtils]: Spent 7.39s 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) [2022-07-22 23:26:18,105 WARN L233 SmtUtils]: Spent 9.38s 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) [2022-07-22 23:26:25,623 WARN L233 SmtUtils]: Spent 7.49s 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) [2022-07-22 23:26:33,589 WARN L233 SmtUtils]: Spent 7.96s 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) [2022-07-22 23:26:41,225 WARN L233 SmtUtils]: Spent 7.63s 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) [2022-07-22 23:26:49,062 WARN L233 SmtUtils]: Spent 7.84s 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) [2022-07-22 23:26:56,658 WARN L233 SmtUtils]: Spent 7.59s 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) [2022-07-22 23:27:07,904 WARN L233 SmtUtils]: Spent 7.86s 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) [2022-07-22 23:27:18,553 WARN L233 SmtUtils]: Spent 8.12s 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) [2022-07-22 23:27:27,055 WARN L233 SmtUtils]: Spent 7.67s 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) [2022-07-22 23:27:34,784 WARN L233 SmtUtils]: Spent 7.73s 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)