./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 ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/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-dev-ae00767 [2021-12-28 03:48:07,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:48:07,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:48:07,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:48:07,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:48:07,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:48:07,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:48:07,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:48:07,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:48:07,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:48:07,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:48:07,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:48:07,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:48:07,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:48:07,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:48:07,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:48:07,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:48:07,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:48:07,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:48:07,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:48:07,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:48:07,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:48:07,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:48:07,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:48:07,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:48:07,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:48:07,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:48:07,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:48:07,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:48:07,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:48:07,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:48:07,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:48:07,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:48:07,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:48:07,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:48:07,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:48:07,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:48:07,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:48:07,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:48:07,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:48:07,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:48:07,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:48:07,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:48:07,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:48:07,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:48:07,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:48:07,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:48:07,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:48:07,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:48:07,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:48:07,664 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:48:07,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:48:07,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:48:07,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:48:07,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:48:07,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:48:07,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:48:07,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:48:07,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:48:07,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:48:07,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:48:07,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:48:07,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:48:07,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:07,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:48:07,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:48:07,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:48:07,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:48:07,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:48:07,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:48:07,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:48:07,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:48:07,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2021-12-28 03:48:07,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:48:07,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:48:07,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:48:07,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:48:07,949 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:48:07,950 INFO L432 ainManager$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 [2021-12-28 03:48:07,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13677728c/d1a929aeeabc48c099c7c7cb734206c3/FLAG2618895e1 [2021-12-28 03:48:08,632 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:48:08,632 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 [2021-12-28 03:48:08,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13677728c/d1a929aeeabc48c099c7c7cb734206c3/FLAG2618895e1 [2021-12-28 03:48:09,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13677728c/d1a929aeeabc48c099c7c7cb734206c3 [2021-12-28 03:48:09,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:48:09,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:48:09,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:09,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:48:09,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:48:09,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:09" (1/1) ... [2021-12-28 03:48:09,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c72869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:09, skipping insertion in model container [2021-12-28 03:48:09,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:09" (1/1) ... [2021-12-28 03:48:09,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:48:09,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:48:10,561 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] [2021-12-28 03:48:10,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:10,697 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:48:11,080 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] [2021-12-28 03:48:11,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:11,176 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:48:11,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11 WrapperNode [2021-12-28 03:48:11,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:11,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:11,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:48:11,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:48:11,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,404 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3287 [2021-12-28 03:48:11,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:11,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:48:11,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:48:11,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:48:11,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:48:11,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:48:11,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:48:11,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:48:11,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (1/1) ... [2021-12-28 03:48:11,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:11,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:48:11,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:48:11,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:48:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2021-12-28 03:48:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2021-12-28 03:48:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:48:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:48:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:48:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:48:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2021-12-28 03:48:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2021-12-28 03:48:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2021-12-28 03:48:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2021-12-28 03:48:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-28 03:48:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-28 03:48:11,716 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2021-12-28 03:48:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2021-12-28 03:48:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2021-12-28 03:48:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2021-12-28 03:48:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:48:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:48:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-28 03:48:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-28 03:48:11,717 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-12-28 03:48:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-12-28 03:48:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-12-28 03:48:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-12-28 03:48:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:48:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:48:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2021-12-28 03:48:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2021-12-28 03:48:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:48:11,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-28 03:48:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2021-12-28 03:48:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2021-12-28 03:48:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2021-12-28 03:48:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 03:48:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 03:48:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:48:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:48:11,719 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2021-12-28 03:48:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2021-12-28 03:48:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:48:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-12-28 03:48:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-12-28 03:48:11,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:48:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-28 03:48:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-28 03:48:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:48:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:48:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:48:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2021-12-28 03:48:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2021-12-28 03:48:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-28 03:48:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-28 03:48:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:48:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:48:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-12-28 03:48:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-12-28 03:48:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:48:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2021-12-28 03:48:11,723 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2021-12-28 03:48:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-28 03:48:11,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-28 03:48:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:48:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2021-12-28 03:48:11,724 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2021-12-28 03:48:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:48:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:48:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:48:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:48:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2021-12-28 03:48:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2021-12-28 03:48:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-28 03:48:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-28 03:48:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-28 03:48:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-28 03:48:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-12-28 03:48:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-12-28 03:48:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2021-12-28 03:48:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2021-12-28 03:48:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:48:11,726 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:48:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-12-28 03:48:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:48:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 03:48:11,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:48:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2021-12-28 03:48:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2021-12-28 03:48:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:48:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:48:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:48:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:48:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:48:11,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:48:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-12-28 03:48:11,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-12-28 03:48:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:48:11,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:48:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:48:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:48:11,730 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:48:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2021-12-28 03:48:11,731 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2021-12-28 03:48:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:48:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:48:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2021-12-28 03:48:11,731 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2021-12-28 03:48:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:48:11,731 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:48:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2021-12-28 03:48:11,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2021-12-28 03:48:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 03:48:11,732 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 03:48:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-12-28 03:48:11,732 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-12-28 03:48:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2021-12-28 03:48:11,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2021-12-28 03:48:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-12-28 03:48:11,735 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-12-28 03:48:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-28 03:48:11,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-28 03:48:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-12-28 03:48:11,736 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-12-28 03:48:11,737 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-28 03:48:11,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-28 03:48:11,737 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2021-12-28 03:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2021-12-28 03:48:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:48:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:48:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2021-12-28 03:48:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2021-12-28 03:48:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-28 03:48:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-28 03:48:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-28 03:48:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2021-12-28 03:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2021-12-28 03:48:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-28 03:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-28 03:48:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-12-28 03:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-12-28 03:48:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-28 03:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-28 03:48:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-28 03:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-28 03:48:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 03:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 03:48:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2021-12-28 03:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2021-12-28 03:48:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-12-28 03:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-12-28 03:48:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-12-28 03:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-12-28 03:48:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:48:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-12-28 03:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-12-28 03:48:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-28 03:48:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-28 03:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-28 03:48:12,244 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:48:12,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:48:17,200 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:48:17,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:48:17,216 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:48:17,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:17 BoogieIcfgContainer [2021-12-28 03:48:17,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:48:17,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:48:17,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:48:17,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:48:17,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:48:09" (1/3) ... [2021-12-28 03:48:17,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c661676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:17, skipping insertion in model container [2021-12-28 03:48:17,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:11" (2/3) ... [2021-12-28 03:48:17,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c661676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:17, skipping insertion in model container [2021-12-28 03:48:17,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:17" (3/3) ... [2021-12-28 03:48:17,226 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2021-12-28 03:48:17,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:48:17,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:48:17,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:48:17,274 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:48:17,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:48:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 1221 states, 841 states have (on average 1.3626634958382877) internal successors, (1146), 891 states have internal predecessors, (1146), 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) [2021-12-28 03:48:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 03:48:17,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:17,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:17,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1371765540, now seen corresponding path program 1 times [2021-12-28 03:48:17,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:17,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250914230] [2021-12-28 03:48:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:17,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:17,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250914230] [2021-12-28 03:48:17,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250914230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:17,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:17,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:17,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567534347] [2021-12-28 03:48:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:17,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:17,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:17,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:17,701 INFO L87 Difference]: Start difference. First operand has 1221 states, 841 states have (on average 1.3626634958382877) internal successors, (1146), 891 states have internal predecessors, (1146), 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) [2021-12-28 03:48:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:17,924 INFO L93 Difference]: Finished difference Result 3588 states and 5271 transitions. [2021-12-28 03:48:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:17,926 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 [2021-12-28 03:48:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:17,996 INFO L225 Difference]: With dead ends: 3588 [2021-12-28 03:48:17,996 INFO L226 Difference]: Without dead ends: 2366 [2021-12-28 03:48:18,007 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:48:18,011 INFO L933 BasicCegarLoop]: 2781 mSDtfsCounter, 1675 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 4481 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 [2021-12-28 03:48:18,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 4481 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:48:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-12-28 03:48:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2362. [2021-12-28 03:48:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1629 states have (on average 1.3597298956414978) internal successors, (2215), 1716 states have internal predecessors, (2215), 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) [2021-12-28 03:48:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3385 transitions. [2021-12-28 03:48:18,169 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3385 transitions. Word has length 16 [2021-12-28 03:48:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:18,170 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 3385 transitions. [2021-12-28 03:48:18,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 03:48:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3385 transitions. [2021-12-28 03:48:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:48:18,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:18,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:18,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:48:18,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 24298474, now seen corresponding path program 1 times [2021-12-28 03:48:18,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:18,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83119488] [2021-12-28 03:48:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:18,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:48:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:18,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83119488] [2021-12-28 03:48:18,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83119488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:18,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:18,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:48:18,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762086338] [2021-12-28 03:48:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:18,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:48:18,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:48:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:48:18,340 INFO L87 Difference]: Start difference. First operand 2362 states and 3385 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) [2021-12-28 03:48:29,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:31,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:33,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:34,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:36,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:39,607 INFO L93 Difference]: Finished difference Result 7335 states and 10672 transitions. [2021-12-28 03:48:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:48:39,608 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 [2021-12-28 03:48:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:39,641 INFO L225 Difference]: With dead ends: 7335 [2021-12-28 03:48:39,641 INFO L226 Difference]: Without dead ends: 4976 [2021-12-28 03:48:39,651 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:48:39,654 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 2994 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6360 mSolverCounterSat, 2064 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 8426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2064 IncrementalHoareTripleChecker+Valid, 6360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:39,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 2719 Invalid, 8426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2064 Valid, 6360 Invalid, 2 Unknown, 0 Unchecked, 20.9s Time] [2021-12-28 03:48:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2021-12-28 03:48:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4668. [2021-12-28 03:48:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 3222 states have (on average 1.3597144630664184) internal successors, (4381), 3388 states have internal predecessors, (4381), 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) [2021-12-28 03:48:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6700 transitions. [2021-12-28 03:48:39,906 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6700 transitions. Word has length 23 [2021-12-28 03:48:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:39,906 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 6700 transitions. [2021-12-28 03:48:39,907 INFO L471 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) [2021-12-28 03:48:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6700 transitions. [2021-12-28 03:48:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:48:39,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:39,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:39,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:48:39,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash -46651610, now seen corresponding path program 1 times [2021-12-28 03:48:39,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:39,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729876576] [2021-12-28 03:48:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:39,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:48:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:40,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:40,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729876576] [2021-12-28 03:48:40,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729876576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:40,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:40,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:48:40,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987255858] [2021-12-28 03:48:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:40,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:48:40,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:48:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:40,011 INFO L87 Difference]: Start difference. First operand 4668 states and 6700 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) [2021-12-28 03:48:46,502 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 [] [2021-12-28 03:48:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:46,839 INFO L93 Difference]: Finished difference Result 8402 states and 12170 transitions. [2021-12-28 03:48:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:46,852 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 [2021-12-28 03:48:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:46,872 INFO L225 Difference]: With dead ends: 8402 [2021-12-28 03:48:46,873 INFO L226 Difference]: Without dead ends: 3737 [2021-12-28 03:48:46,890 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:48:46,893 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 2092 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 605 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:46,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2273 Valid, 3039 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1882 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-12-28 03:48:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-12-28 03:48:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3521. [2021-12-28 03:48:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 2430 states have (on average 1.3584362139917696) internal successors, (3301), 2557 states have internal predecessors, (3301), 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) [2021-12-28 03:48:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 5048 transitions. [2021-12-28 03:48:47,018 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 5048 transitions. Word has length 25 [2021-12-28 03:48:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:47,019 INFO L470 AbstractCegarLoop]: Abstraction has 3521 states and 5048 transitions. [2021-12-28 03:48:47,019 INFO L471 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) [2021-12-28 03:48:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 5048 transitions. [2021-12-28 03:48:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 03:48:47,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:47,021 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:48:47,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:48:47,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1054871817, now seen corresponding path program 1 times [2021-12-28 03:48:47,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33052193] [2021-12-28 03:48:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:47,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:47,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:48:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:48:47,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33052193] [2021-12-28 03:48:47,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33052193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:47,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:47,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:47,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831557231] [2021-12-28 03:48:47,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:47,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:47,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:47,161 INFO L87 Difference]: Start difference. First operand 3521 states and 5048 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) [2021-12-28 03:48:52,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:53,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:53,760 INFO L93 Difference]: Finished difference Result 3759 states and 5483 transitions. [2021-12-28 03:48:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:53,760 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 [2021-12-28 03:48:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:53,776 INFO L225 Difference]: With dead ends: 3759 [2021-12-28 03:48:53,776 INFO L226 Difference]: Without dead ends: 3755 [2021-12-28 03:48:53,778 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:48:53,778 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 1832 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 560 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:53,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 1765 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 1106 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-12-28 03:48:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-12-28 03:48:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3537. [2021-12-28 03:48:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 2442 states have (on average 1.355036855036855) internal successors, (3309), 2567 states have internal predecessors, (3309), 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) [2021-12-28 03:48:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5054 transitions. [2021-12-28 03:48:53,886 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5054 transitions. Word has length 35 [2021-12-28 03:48:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:53,886 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5054 transitions. [2021-12-28 03:48:53,886 INFO L471 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) [2021-12-28 03:48:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5054 transitions. [2021-12-28 03:48:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:48:53,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:53,888 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:48:53,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:48:53,888 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1659366227, now seen corresponding path program 1 times [2021-12-28 03:48:53,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740817257] [2021-12-28 03:48:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:53,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:48:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:48:54,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:54,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740817257] [2021-12-28 03:48:54,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740817257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:54,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:54,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:54,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303565506] [2021-12-28 03:48:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:54,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:54,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:54,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:54,016 INFO L87 Difference]: Start difference. First operand 3537 states and 5054 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) [2021-12-28 03:48:58,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:00,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:00,470 INFO L93 Difference]: Finished difference Result 3755 states and 5476 transitions. [2021-12-28 03:49:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:49:00,470 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 [2021-12-28 03:49:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:00,486 INFO L225 Difference]: With dead ends: 3755 [2021-12-28 03:49:00,486 INFO L226 Difference]: Without dead ends: 3752 [2021-12-28 03:49:00,488 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:49:00,488 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 1852 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 538 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:00,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2039 Valid, 1740 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-12-28 03:49:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-12-28 03:49:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3536. [2021-12-28 03:49:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 2442 states have (on average 1.3546273546273546) internal successors, (3308), 2566 states have internal predecessors, (3308), 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) [2021-12-28 03:49:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5052 transitions. [2021-12-28 03:49:00,604 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5052 transitions. Word has length 36 [2021-12-28 03:49:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:00,604 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 5052 transitions. [2021-12-28 03:49:00,604 INFO L471 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) [2021-12-28 03:49:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5052 transitions. [2021-12-28 03:49:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 03:49:00,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:00,606 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:49:00,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:49:00,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash 98605196, now seen corresponding path program 1 times [2021-12-28 03:49:00,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623589774] [2021-12-28 03:49:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:00,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:49:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:49:00,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:00,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623589774] [2021-12-28 03:49:00,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623589774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:00,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:00,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:00,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715215333] [2021-12-28 03:49:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:00,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:00,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:00,700 INFO L87 Difference]: Start difference. First operand 3536 states and 5052 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) [2021-12-28 03:49:05,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:07,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:07,910 INFO L93 Difference]: Finished difference Result 3754 states and 5474 transitions. [2021-12-28 03:49:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:49:07,911 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 [2021-12-28 03:49:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:07,929 INFO L225 Difference]: With dead ends: 3754 [2021-12-28 03:49:07,930 INFO L226 Difference]: Without dead ends: 3751 [2021-12-28 03:49:07,933 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:49:07,934 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 1850 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 535 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:07,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 1737 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1086 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-12-28 03:49:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-12-28 03:49:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3535. [2021-12-28 03:49:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 2442 states have (on average 1.3542178542178542) internal successors, (3307), 2565 states have internal predecessors, (3307), 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) [2021-12-28 03:49:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5050 transitions. [2021-12-28 03:49:08,061 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5050 transitions. Word has length 37 [2021-12-28 03:49:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:08,062 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 5050 transitions. [2021-12-28 03:49:08,063 INFO L471 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) [2021-12-28 03:49:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5050 transitions. [2021-12-28 03:49:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:49:08,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:08,064 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:49:08,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:49:08,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1238850672, now seen corresponding path program 1 times [2021-12-28 03:49:08,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:08,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54395182] [2021-12-28 03:49:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:08,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:49:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:49:08,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54395182] [2021-12-28 03:49:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54395182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:08,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:08,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:08,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183307378] [2021-12-28 03:49:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:08,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:08,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:08,186 INFO L87 Difference]: Start difference. First operand 3535 states and 5050 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) [2021-12-28 03:49:11,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:15,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:15,333 INFO L93 Difference]: Finished difference Result 3753 states and 5472 transitions. [2021-12-28 03:49:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:49:15,334 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 [2021-12-28 03:49:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:15,348 INFO L225 Difference]: With dead ends: 3753 [2021-12-28 03:49:15,348 INFO L226 Difference]: Without dead ends: 3750 [2021-12-28 03:49:15,350 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:49:15,350 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1847 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:15,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2033 Valid, 1735 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-12-28 03:49:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-12-28 03:49:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3534. [2021-12-28 03:49:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 2442 states have (on average 1.3538083538083538) internal successors, (3306), 2564 states have internal predecessors, (3306), 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) [2021-12-28 03:49:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 5048 transitions. [2021-12-28 03:49:15,483 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 5048 transitions. Word has length 38 [2021-12-28 03:49:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:15,483 INFO L470 AbstractCegarLoop]: Abstraction has 3534 states and 5048 transitions. [2021-12-28 03:49:15,483 INFO L471 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) [2021-12-28 03:49:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 5048 transitions. [2021-12-28 03:49:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 03:49:15,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:15,485 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:49:15,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:49:15,486 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash 249695247, now seen corresponding path program 1 times [2021-12-28 03:49:15,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382687416] [2021-12-28 03:49:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:15,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:49:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:49:15,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382687416] [2021-12-28 03:49:15,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382687416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:15,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:15,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:15,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599291747] [2021-12-28 03:49:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:15,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:15,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:15,586 INFO L87 Difference]: Start difference. First operand 3534 states and 5048 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)