./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 6c24879c 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-?-6c24879 [2022-07-12 12:06:22,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:06:22,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:06:22,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:06:22,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:06:22,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:06:22,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:06:22,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:06:22,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:06:22,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:06:22,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:06:22,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:06:22,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:06:22,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:06:22,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:06:22,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:06:22,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:06:22,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:06:22,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:06:22,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:06:22,856 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:06:22,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:06:22,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:06:22,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:06:22,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:06:22,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:06:22,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:06:22,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:06:22,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:06:22,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:06:22,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:06:22,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:06:22,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:06:22,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:06:22,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:06:22,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:06:22,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:06:22,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:06:22,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:06:22,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:06:22,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:06:22,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:06:22,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:06:22,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:06:22,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:06:22,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:06:22,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:06:22,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:06:22,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:06:22,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:06:22,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:06:22,917 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:06:22,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:06:22,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:06:22,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:06:22,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:06:22,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:06:22,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:06:22,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:06:22,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:22,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:06:22,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:06:22,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:06:22,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:06:22,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:06:22,921 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:06:22,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:06:22,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:06:22,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-07-12 12:06:23,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:06:23,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:06:23,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:06:23,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:06:23,203 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:06:23,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-12 12:06:23,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df484e5/0bee34a84ea54e8796938fba04511aea/FLAG7b9fea5d4 [2022-07-12 12:06:24,068 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:06:24,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-12 12:06:24,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df484e5/0bee34a84ea54e8796938fba04511aea/FLAG7b9fea5d4 [2022-07-12 12:06:24,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df484e5/0bee34a84ea54e8796938fba04511aea [2022-07-12 12:06:24,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:06:24,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:06:24,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:24,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:06:24,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:06:24,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:24" (1/1) ... [2022-07-12 12:06:24,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e50a440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:24, skipping insertion in model container [2022-07-12 12:06:24,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:06:24" (1/1) ... [2022-07-12 12:06:24,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:06:24,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:06:26,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-12 12:06:27,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:27,037 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:06:27,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-07-12 12:06:27,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:06:27,521 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:06:27,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27 WrapperNode [2022-07-12 12:06:27,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:06:27,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:27,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:06:27,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:06:27,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,764 INFO L137 Inliner]: procedures = 389, calls = 2919, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3344 [2022-07-12 12:06:27,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:06:27,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:06:27,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:06:27,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:06:27,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:27,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:28,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:28,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:28,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:06:28,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:06:28,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:06:28,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:06:28,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (1/1) ... [2022-07-12 12:06:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:06:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:06:28,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:06:28,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:06:28,142 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-07-12 12:06:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-07-12 12:06:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-12 12:06:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-12 12:06:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:06:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:06:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-07-12 12:06:28,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-07-12 12:06:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-07-12 12:06:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-07-12 12:06:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 12:06:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 12:06:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-07-12 12:06:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-07-12 12:06:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-07-12 12:06:28,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-07-12 12:06:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:06:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:06:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-12 12:06:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-12 12:06:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-12 12:06:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-12 12:06:28,145 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-07-12 12:06:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-07-12 12:06:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:06:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:06:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-07-12 12:06:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-07-12 12:06:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:06:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-12 12:06:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-07-12 12:06:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-07-12 12:06:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-07-12 12:06:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 12:06:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 12:06:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:06:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:06:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-07-12 12:06:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-07-12 12:06:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:06:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-07-12 12:06:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-07-12 12:06:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:06:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-07-12 12:06:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-07-12 12:06:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:06:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:06:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:06:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-07-12 12:06:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-07-12 12:06:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-12 12:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-12 12:06:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-12 12:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-12 12:06:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-07-12 12:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-07-12 12:06:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-07-12 12:06:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-07-12 12:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-12 12:06:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-12 12:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-07-12 12:06:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-07-12 12:06:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:06:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:06:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:06:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:06:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-07-12 12:06:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-07-12 12:06:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-12 12:06:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-12 12:06:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-12 12:06:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-12 12:06:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-07-12 12:06:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-07-12 12:06:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-07-12 12:06:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-07-12 12:06:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 12:06:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 12:06:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-07-12 12:06:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-07-12 12:06:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:06:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:06:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-07-12 12:06:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-12 12:06:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-12 12:06:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:06:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:06:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-07-12 12:06:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-07-12 12:06:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:06:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:06:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:06:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:06:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-12 12:06:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-12 12:06:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-07-12 12:06:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-07-12 12:06:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:06:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:06:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:06:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 12:06:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 12:06:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-07-12 12:06:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-07-12 12:06:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:06:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:06:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-07-12 12:06:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-07-12 12:06:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 12:06:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 12:06:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-07-12 12:06:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-07-12 12:06:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-12 12:06:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-12 12:06:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-07-12 12:06:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-07-12 12:06:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-07-12 12:06:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-07-12 12:06:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-12 12:06:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-12 12:06:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-12 12:06:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-12 12:06:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-07-12 12:06:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-07-12 12:06:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-12 12:06:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-12 12:06:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-07-12 12:06:28,161 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-07-12 12:06:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:06:28,161 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:06:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:06:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:06:28,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:06:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-07-12 12:06:28,162 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-07-12 12:06:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-07-12 12:06:28,162 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-07-12 12:06:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-12 12:06:28,162 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-12 12:06:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-12 12:06:28,162 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-12 12:06:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-07-12 12:06:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-07-12 12:06:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-12 12:06:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-12 12:06:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-07-12 12:06:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-07-12 12:06:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-12 12:06:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-12 12:06:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-12 12:06:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-12 12:06:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-12 12:06:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-12 12:06:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-07-12 12:06:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-07-12 12:06:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-07-12 12:06:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-07-12 12:06:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-07-12 12:06:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-07-12 12:06:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:06:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-07-12 12:06:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-07-12 12:06:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-12 12:06:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-12 12:06:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-12 12:06:28,740 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:06:28,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:06:36,686 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:06:36,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:06:36,707 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:06:36,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:06:36 BoogieIcfgContainer [2022-07-12 12:06:36,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:06:36,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:06:36,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:06:36,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:06:36,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:06:24" (1/3) ... [2022-07-12 12:06:36,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2622e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:06:36, skipping insertion in model container [2022-07-12 12:06:36,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:06:27" (2/3) ... [2022-07-12 12:06:36,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2622e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:06:36, skipping insertion in model container [2022-07-12 12:06:36,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:06:36" (3/3) ... [2022-07-12 12:06:36,719 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-07-12 12:06:36,731 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:06:36,732 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:06:36,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:06:36,839 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41e44f51, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e28ab53 [2022-07-12 12:06:36,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:06:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2022-07-12 12:06:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 12:06:36,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:06:36,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:06:36,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:06:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:06:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1353827036, now seen corresponding path program 1 times [2022-07-12 12:06:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:06:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228002770] [2022-07-12 12:06:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:06:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:06:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:06:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:06:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:06:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228002770] [2022-07-12 12:06:37,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228002770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:06:37,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:06:37,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:06:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288994293] [2022-07-12 12:06:37,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:06:37,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:06:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:06:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:06:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:06:37,484 INFO L87 Difference]: Start difference. First operand has 1250 states, 870 states have (on average 1.3781609195402298) internal successors, (1199), 920 states have internal predecessors, (1199), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:06:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:06:37,882 INFO L93 Difference]: Finished difference Result 3675 states and 5434 transitions. [2022-07-12 12:06:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:06:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-12 12:06:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:06:37,927 INFO L225 Difference]: With dead ends: 3675 [2022-07-12 12:06:37,928 INFO L226 Difference]: Without dead ends: 2424 [2022-07-12 12:06:37,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:06:37,949 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 1711 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:06:37,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 4583 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:06:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-12 12:06:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2420. [2022-07-12 12:06:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1687 states have (on average 1.3556609365737997) internal successors, (2287), 1774 states have internal predecessors, (2287), 590 states have call successors, (590), 143 states have call predecessors, (590), 142 states have return successors, (580), 568 states have call predecessors, (580), 580 states have call successors, (580) [2022-07-12 12:06:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3457 transitions. [2022-07-12 12:06:38,191 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3457 transitions. Word has length 16 [2022-07-12 12:06:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:06:38,191 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3457 transitions. [2022-07-12 12:06:38,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:06:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3457 transitions. [2022-07-12 12:06:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 12:06:38,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:06:38,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:06:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:06:38,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:06:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:06:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1697719892, now seen corresponding path program 1 times [2022-07-12 12:06:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:06:38,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692758915] [2022-07-12 12:06:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:06:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:06:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:06:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:06:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:06:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:06:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:06:38,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692758915] [2022-07-12 12:06:38,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692758915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:06:38,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:06:38,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:06:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443760279] [2022-07-12 12:06:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:06:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:06:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:06:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:06:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:06:38,438 INFO L87 Difference]: Start difference. First operand 2420 states and 3457 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:06:51,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:06:54,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:06:56,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:00,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:01,889 INFO L93 Difference]: Finished difference Result 7503 states and 10878 transitions. [2022-07-12 12:07:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:07:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-12 12:07:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:01,922 INFO L225 Difference]: With dead ends: 7503 [2022-07-12 12:07:01,922 INFO L226 Difference]: Without dead ends: 5086 [2022-07-12 12:07:01,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:07:01,938 INFO L413 NwaCegarLoop]: 2080 mSDtfsCounter, 3074 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6508 mSolverCounterSat, 2064 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 8575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2064 IncrementalHoareTripleChecker+Valid, 6508 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:01,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 2781 Invalid, 8575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2064 Valid, 6508 Invalid, 3 Unknown, 0 Unchecked, 23.0s Time] [2022-07-12 12:07:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-07-12 12:07:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4778. [2022-07-12 12:07:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 3336 states have (on average 1.3558153477218224) internal successors, (4523), 3500 states have internal predecessors, (4523), 1159 states have call successors, (1159), 282 states have call predecessors, (1159), 282 states have return successors, (1154), 1125 states have call predecessors, (1154), 1149 states have call successors, (1154) [2022-07-12 12:07:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6836 transitions. [2022-07-12 12:07:02,228 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6836 transitions. Word has length 23 [2022-07-12 12:07:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:02,229 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 6836 transitions. [2022-07-12 12:07:02,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:02,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6836 transitions. [2022-07-12 12:07:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 12:07:02,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:02,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:02,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:07:02,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:02,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1343888216, now seen corresponding path program 1 times [2022-07-12 12:07:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:02,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340947424] [2022-07-12 12:07:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:07:02,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:02,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340947424] [2022-07-12 12:07:02,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340947424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:02,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:02,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:07:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502080407] [2022-07-12 12:07:02,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:02,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:07:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:07:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:02,388 INFO L87 Difference]: Start difference. First operand 4778 states and 6836 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:08,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:11,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:13,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:13,942 INFO L93 Difference]: Finished difference Result 9653 states and 13951 transitions. [2022-07-12 12:07:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-12 12:07:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:13,973 INFO L225 Difference]: With dead ends: 9653 [2022-07-12 12:07:13,973 INFO L226 Difference]: Without dead ends: 4878 [2022-07-12 12:07:13,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:07:13,996 INFO L413 NwaCegarLoop]: 1772 mSDtfsCounter, 2131 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 607 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:13,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 3121 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1924 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-07-12 12:07:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2022-07-12 12:07:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4590. [2022-07-12 12:07:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3190 states have (on average 1.352037617554859) internal successors, (4313), 3350 states have internal predecessors, (4313), 1125 states have call successors, (1125), 274 states have call predecessors, (1125), 274 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 6557 transitions. [2022-07-12 12:07:14,214 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 6557 transitions. Word has length 25 [2022-07-12 12:07:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:14,214 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 6557 transitions. [2022-07-12 12:07:14,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 6557 transitions. [2022-07-12 12:07:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 12:07:14,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:14,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:14,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:07:14,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:14,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1947073205, now seen corresponding path program 1 times [2022-07-12 12:07:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:14,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380688989] [2022-07-12 12:07:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380688989] [2022-07-12 12:07:14,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380688989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:14,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:14,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824890034] [2022-07-12 12:07:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:14,420 INFO L87 Difference]: Start difference. First operand 4590 states and 6557 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:20,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:23,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:23,189 INFO L93 Difference]: Finished difference Result 4903 states and 7128 transitions. [2022-07-12 12:07:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:07:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-12 12:07:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:23,223 INFO L225 Difference]: With dead ends: 4903 [2022-07-12 12:07:23,223 INFO L226 Difference]: Without dead ends: 4899 [2022-07-12 12:07:23,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:23,228 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 1871 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 563 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:23,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 1803 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1135 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-07-12 12:07:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-07-12 12:07:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4612. [2022-07-12 12:07:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3206 states have (on average 1.3487211478477854) internal successors, (4324), 3364 states have internal predecessors, (4324), 1123 states have call successors, (1123), 282 states have call predecessors, (1123), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6566 transitions. [2022-07-12 12:07:23,480 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6566 transitions. Word has length 35 [2022-07-12 12:07:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:23,481 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6566 transitions. [2022-07-12 12:07:23,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6566 transitions. [2022-07-12 12:07:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-12 12:07:23,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:23,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:23,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:07:23,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -230381267, now seen corresponding path program 1 times [2022-07-12 12:07:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8680691] [2022-07-12 12:07:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:23,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8680691] [2022-07-12 12:07:23,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8680691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:23,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:23,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337665038] [2022-07-12 12:07:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:23,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:23,651 INFO L87 Difference]: Start difference. First operand 4612 states and 6566 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:27,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:30,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:32,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:32,324 INFO L93 Difference]: Finished difference Result 4899 states and 7120 transitions. [2022-07-12 12:07:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-12 12:07:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:32,352 INFO L225 Difference]: With dead ends: 4899 [2022-07-12 12:07:32,353 INFO L226 Difference]: Without dead ends: 4896 [2022-07-12 12:07:32,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:32,356 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1892 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 538 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:32,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1782 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1120 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-07-12 12:07:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2022-07-12 12:07:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4611. [2022-07-12 12:07:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 3206 states have (on average 1.3484092326887087) internal successors, (4323), 3363 states have internal predecessors, (4323), 1122 states have call successors, (1122), 282 states have call predecessors, (1122), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6564 transitions. [2022-07-12 12:07:32,596 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6564 transitions. Word has length 36 [2022-07-12 12:07:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:32,597 INFO L495 AbstractCegarLoop]: Abstraction has 4611 states and 6564 transitions. [2022-07-12 12:07:32,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6564 transitions. [2022-07-12 12:07:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 12:07:32,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:32,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:07:32,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1447466126, now seen corresponding path program 1 times [2022-07-12 12:07:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:32,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838568921] [2022-07-12 12:07:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:32,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838568921] [2022-07-12 12:07:32,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838568921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:32,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:32,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403493026] [2022-07-12 12:07:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:32,816 INFO L87 Difference]: Start difference. First operand 4611 states and 6564 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:38,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:39,162 INFO L93 Difference]: Finished difference Result 4898 states and 7118 transitions. [2022-07-12 12:07:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:39,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-07-12 12:07:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:39,194 INFO L225 Difference]: With dead ends: 4898 [2022-07-12 12:07:39,195 INFO L226 Difference]: Without dead ends: 4895 [2022-07-12 12:07:39,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:39,204 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1890 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 537 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:39,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 1779 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1121 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-07-12 12:07:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2022-07-12 12:07:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4610. [2022-07-12 12:07:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3206 states have (on average 1.348097317529632) internal successors, (4322), 3362 states have internal predecessors, (4322), 1121 states have call successors, (1121), 282 states have call predecessors, (1121), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6562 transitions. [2022-07-12 12:07:39,442 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6562 transitions. Word has length 37 [2022-07-12 12:07:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:39,443 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 6562 transitions. [2022-07-12 12:07:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6562 transitions. [2022-07-12 12:07:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 12:07:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:39,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:07:39,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1921132624, now seen corresponding path program 1 times [2022-07-12 12:07:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:39,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104870436] [2022-07-12 12:07:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:39,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:39,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104870436] [2022-07-12 12:07:39,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104870436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:39,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:39,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376576563] [2022-07-12 12:07:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:39,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:39,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:39,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:39,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:39,625 INFO L87 Difference]: Start difference. First operand 4610 states and 6562 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:43,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:46,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:47,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:48,072 INFO L93 Difference]: Finished difference Result 4897 states and 7116 transitions. [2022-07-12 12:07:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-12 12:07:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:48,093 INFO L225 Difference]: With dead ends: 4897 [2022-07-12 12:07:48,094 INFO L226 Difference]: Without dead ends: 4894 [2022-07-12 12:07:48,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:48,097 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1886 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:48,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 1774 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-12 12:07:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2022-07-12 12:07:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4609. [2022-07-12 12:07:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 3206 states have (on average 1.347785402370555) internal successors, (4321), 3361 states have internal predecessors, (4321), 1120 states have call successors, (1120), 282 states have call predecessors, (1120), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 6560 transitions. [2022-07-12 12:07:48,330 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 6560 transitions. Word has length 38 [2022-07-12 12:07:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:48,330 INFO L495 AbstractCegarLoop]: Abstraction has 4609 states and 6560 transitions. [2022-07-12 12:07:48,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 6560 transitions. [2022-07-12 12:07:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 12:07:48,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:48,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:48,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:07:48,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash -575070255, now seen corresponding path program 1 times [2022-07-12 12:07:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:48,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608026351] [2022-07-12 12:07:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:48,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608026351] [2022-07-12 12:07:48,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608026351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:48,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:48,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:48,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422077172] [2022-07-12 12:07:48,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:48,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:48,482 INFO L87 Difference]: Start difference. First operand 4609 states and 6560 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:53,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:54,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:56,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:07:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:07:56,726 INFO L93 Difference]: Finished difference Result 4896 states and 7114 transitions. [2022-07-12 12:07:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:07:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-12 12:07:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:07:56,747 INFO L225 Difference]: With dead ends: 4896 [2022-07-12 12:07:56,747 INFO L226 Difference]: Without dead ends: 4893 [2022-07-12 12:07:56,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:07:56,750 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1883 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 535 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:07:56,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 1771 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1118 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-07-12 12:07:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-07-12 12:07:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4608. [2022-07-12 12:07:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 3206 states have (on average 1.3474734872114784) internal successors, (4320), 3360 states have internal predecessors, (4320), 1119 states have call successors, (1119), 282 states have call predecessors, (1119), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:07:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6558 transitions. [2022-07-12 12:07:56,980 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6558 transitions. Word has length 39 [2022-07-12 12:07:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:07:56,980 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 6558 transitions. [2022-07-12 12:07:56,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:07:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6558 transitions. [2022-07-12 12:07:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 12:07:56,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:07:56,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:07:56,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:07:56,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:07:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:07:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -647943309, now seen corresponding path program 1 times [2022-07-12 12:07:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:07:56,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056042945] [2022-07-12 12:07:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:07:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:07:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:07:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:07:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:07:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:07:57,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056042945] [2022-07-12 12:07:57,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056042945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:07:57,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:07:57,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:07:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720440457] [2022-07-12 12:07:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:07:57,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:07:57,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:07:57,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:07:57,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:07:57,166 INFO L87 Difference]: Start difference. First operand 4608 states and 6558 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:02,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:04,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:05,219 INFO L93 Difference]: Finished difference Result 4895 states and 7112 transitions. [2022-07-12 12:08:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:08:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-12 12:08:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:05,234 INFO L225 Difference]: With dead ends: 4895 [2022-07-12 12:08:05,235 INFO L226 Difference]: Without dead ends: 4892 [2022-07-12 12:08:05,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:05,238 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1880 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 534 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1770 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1119 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-07-12 12:08:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-07-12 12:08:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4607. [2022-07-12 12:08:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 3206 states have (on average 1.3471615720524017) internal successors, (4319), 3359 states have internal predecessors, (4319), 1118 states have call successors, (1118), 282 states have call predecessors, (1118), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:08:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6556 transitions. [2022-07-12 12:08:05,461 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6556 transitions. Word has length 40 [2022-07-12 12:08:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:05,461 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 6556 transitions. [2022-07-12 12:08:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6556 transitions. [2022-07-12 12:08:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 12:08:05,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:05,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:08:05,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:05,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1387964180, now seen corresponding path program 1 times [2022-07-12 12:08:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:05,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578383943] [2022-07-12 12:08:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:08:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:08:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578383943] [2022-07-12 12:08:05,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578383943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:05,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:05,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521073891] [2022-07-12 12:08:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:05,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:05,617 INFO L87 Difference]: Start difference. First operand 4607 states and 6556 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:11,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:13,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:13,575 INFO L93 Difference]: Finished difference Result 4894 states and 7110 transitions. [2022-07-12 12:08:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:08:13,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-12 12:08:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:13,597 INFO L225 Difference]: With dead ends: 4894 [2022-07-12 12:08:13,598 INFO L226 Difference]: Without dead ends: 4891 [2022-07-12 12:08:13,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:13,601 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1877 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:13,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 1771 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-07-12 12:08:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2022-07-12 12:08:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4606. [2022-07-12 12:08:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3206 states have (on average 1.346849656893325) internal successors, (4318), 3358 states have internal predecessors, (4318), 1117 states have call successors, (1117), 282 states have call predecessors, (1117), 282 states have return successors, (1119), 1090 states have call predecessors, (1119), 1115 states have call successors, (1119) [2022-07-12 12:08:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6554 transitions. [2022-07-12 12:08:13,838 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6554 transitions. Word has length 41 [2022-07-12 12:08:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 4606 states and 6554 transitions. [2022-07-12 12:08:13,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6554 transitions. [2022-07-12 12:08:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 12:08:13,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:13,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 12:08:13,862 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 76591766, now seen corresponding path program 1 times [2022-07-12 12:08:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608843450] [2022-07-12 12:08:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:08:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 12:08:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:14,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608843450] [2022-07-12 12:08:14,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608843450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:14,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:14,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:08:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793810445] [2022-07-12 12:08:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:14,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:08:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:08:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:08:14,005 INFO L87 Difference]: Start difference. First operand 4606 states and 6554 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:17,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:19,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:22,085 INFO L93 Difference]: Finished difference Result 4893 states and 7108 transitions. [2022-07-12 12:08:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:08:22,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-12 12:08:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:22,105 INFO L225 Difference]: With dead ends: 4893 [2022-07-12 12:08:22,105 INFO L226 Difference]: Without dead ends: 4862 [2022-07-12 12:08:22,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:08:22,109 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 1875 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:22,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 1766 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-12 12:08:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-12 12:08:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4577. [2022-07-12 12:08:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 3183 states have (on average 1.347785108388313) internal successors, (4290), 3334 states have internal predecessors, (4290), 1112 states have call successors, (1112), 281 states have call predecessors, (1112), 281 states have return successors, (1115), 1086 states have call predecessors, (1115), 1111 states have call successors, (1115) [2022-07-12 12:08:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6517 transitions. [2022-07-12 12:08:22,372 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6517 transitions. Word has length 42 [2022-07-12 12:08:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:22,372 INFO L495 AbstractCegarLoop]: Abstraction has 4577 states and 6517 transitions. [2022-07-12 12:08:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:08:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6517 transitions. [2022-07-12 12:08:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 12:08:22,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:22,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:08:22,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1939635492, now seen corresponding path program 1 times [2022-07-12 12:08:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676697873] [2022-07-12 12:08:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 12:08:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:08:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:08:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 12:08:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 12:08:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:08:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 12:08:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 12:08:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 12:08:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:08:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 12:08:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:22,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676697873] [2022-07-12 12:08:22,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676697873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:22,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:22,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:08:22,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220365186] [2022-07-12 12:08:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:22,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:08:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:08:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:08:22,624 INFO L87 Difference]: Start difference. First operand 4577 states and 6517 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:08:29,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:33,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:36,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:38,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:40,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:40,451 INFO L93 Difference]: Finished difference Result 8505 states and 12595 transitions. [2022-07-12 12:08:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:08:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-12 12:08:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:40,466 INFO L225 Difference]: With dead ends: 8505 [2022-07-12 12:08:40,466 INFO L226 Difference]: Without dead ends: 3931 [2022-07-12 12:08:40,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:08:40,488 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 2243 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 3564 mSolverCounterSat, 1804 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1804 IncrementalHoareTripleChecker+Valid, 3564 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:40,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 5267 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1804 Valid, 3564 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2022-07-12 12:08:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-07-12 12:08:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 2780. [2022-07-12 12:08:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 1987 states have (on average 1.3714141922496226) internal successors, (2725), 2070 states have internal predecessors, (2725), 623 states have call successors, (623), 163 states have call predecessors, (623), 169 states have return successors, (650), 614 states have call predecessors, (650), 622 states have call successors, (650) [2022-07-12 12:08:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3998 transitions. [2022-07-12 12:08:40,690 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3998 transitions. Word has length 119 [2022-07-12 12:08:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:40,690 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3998 transitions. [2022-07-12 12:08:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:08:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3998 transitions. [2022-07-12 12:08:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 12:08:40,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:08:40,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:08:40,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:08:40,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:08:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:08:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1267868885, now seen corresponding path program 1 times [2022-07-12 12:08:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:08:40,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803146407] [2022-07-12 12:08:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:08:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:08:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 12:08:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 12:08:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:08:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:08:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:08:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:08:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:08:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 12:08:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 12:08:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 12:08:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 12:08:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 12:08:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:08:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 12:08:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:08:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803146407] [2022-07-12 12:08:41,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803146407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:08:41,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:08:41,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:08:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545976194] [2022-07-12 12:08:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:08:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:08:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:08:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:08:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:08:41,150 INFO L87 Difference]: Start difference. First operand 2780 states and 3998 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:08:51,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:54,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:08:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:08:54,979 INFO L93 Difference]: Finished difference Result 3882 states and 6023 transitions. [2022-07-12 12:08:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:08:54,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-07-12 12:08:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:08:54,981 INFO L225 Difference]: With dead ends: 3882 [2022-07-12 12:08:54,981 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 12:08:55,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:08:55,034 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 2024 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 4358 mSolverCounterSat, 1740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 6098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1740 IncrementalHoareTripleChecker+Valid, 4358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:08:55,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 4422 Invalid, 6098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1740 Valid, 4358 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-07-12 12:08:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 12:08:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 12:08:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:08:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 12:08:55,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-07-12 12:08:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:08:55,037 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 12:08:55,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:08:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 12:08:55,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 12:08:55,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 12:08:55,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 12:08:55,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 12:09:03,323 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:21,805 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:27,726 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:34,700 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:42,714 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:49,547 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:09:55,125 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:10:00,226 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:10:06,198 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-12 12:10:12,991 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)