./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:54:23,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:54:23,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:54:23,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:54:23,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:54:23,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:54:23,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:54:23,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:54:23,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:54:23,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:54:23,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:54:23,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:54:23,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:54:23,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:54:23,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:54:23,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:54:23,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:54:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:54:23,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:54:23,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:54:23,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:54:23,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:54:23,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:54:23,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:54:23,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:54:23,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:54:23,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:54:23,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:54:23,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:54:23,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:54:23,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:54:23,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:54:23,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:54:23,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:54:23,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:54:23,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:54:23,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:54:23,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:54:23,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:54:23,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:54:23,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:54:23,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:54:23,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:54:23,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:54:23,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:54:23,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:54:23,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:54:23,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:54:23,155 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:54:23,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:54:23,156 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:54:23,156 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:54:23,156 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:54:23,157 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:54:23,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:54:23,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:54:23,157 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:54:23,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:54:23,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:54:23,158 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:54:23,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:54:23,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:54:23,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:54:23,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:54:23,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:54:23,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:54:23,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:54:23,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:54:23,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:54:23,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:54:23,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:54:23,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:54:23,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:54:23,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:54:23,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:54:23,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:54:23,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:54:23,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:54:23,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:54:23,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:54:23,164 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 [2021-11-23 01:54:23,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:54:23,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:54:23,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:54:23,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:54:23,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:54:23,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2021-11-23 01:54:23,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/data/9f6911e9c/44344d007e054ba0b8634ccdbbe17a3f/FLAG00aac5321 [2021-11-23 01:54:24,739 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:54:24,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2021-11-23 01:54:24,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/data/9f6911e9c/44344d007e054ba0b8634ccdbbe17a3f/FLAG00aac5321 [2021-11-23 01:54:25,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/data/9f6911e9c/44344d007e054ba0b8634ccdbbe17a3f [2021-11-23 01:54:25,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:54:25,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:54:25,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:54:25,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:54:25,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:54:25,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:25" (1/1) ... [2021-11-23 01:54:25,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33908f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:25, skipping insertion in model container [2021-11-23 01:54:25,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:54:25" (1/1) ... [2021-11-23 01:54:25,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:54:25,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:54:27,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2021-11-23 01:54:27,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:54:27,598 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:54:27,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2021-11-23 01:54:27,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:54:28,494 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:54:28,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28 WrapperNode [2021-11-23 01:54:28,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:54:28,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:54:28,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:54:28,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:54:28,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:28,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:28,994 INFO L137 Inliner]: procedures = 284, calls = 3654, calls flagged for inlining = 144, calls inlined = 140, statements flattened = 10053 [2021-11-23 01:54:28,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:54:28,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:54:28,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:54:28,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:54:29,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:54:29,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:54:29,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:54:29,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:54:29,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (1/1) ... [2021-11-23 01:54:29,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:54:29,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:54:29,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:54:29,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0facdb-e4e4-4ed0-8219-8cd9462ff62f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:54:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-11-23 01:54:29,589 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-11-23 01:54:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-23 01:54:29,590 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-23 01:54:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 01:54:29,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 01:54:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 01:54:29,590 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 01:54:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-11-23 01:54:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-11-23 01:54:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-23 01:54:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-23 01:54:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-11-23 01:54:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-11-23 01:54:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 01:54:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 01:54:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-11-23 01:54:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-11-23 01:54:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-11-23 01:54:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-11-23 01:54:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-11-23 01:54:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-11-23 01:54:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-11-23 01:54:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-11-23 01:54:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 01:54:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 01:54:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 01:54:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 01:54:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-23 01:54:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-23 01:54:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-11-23 01:54:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-11-23 01:54:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 01:54:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 01:54:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 01:54:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 01:54:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-23 01:54:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-23 01:54:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:54:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-11-23 01:54:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-11-23 01:54:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-23 01:54:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-23 01:54:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-23 01:54:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-23 01:54:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-11-23 01:54:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-11-23 01:54:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-23 01:54:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-23 01:54:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:54:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 01:54:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 01:54:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-11-23 01:54:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-11-23 01:54:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-23 01:54:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-23 01:54:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:54:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:54:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-23 01:54:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-23 01:54:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 01:54:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 01:54:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-11-23 01:54:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-11-23 01:54:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-11-23 01:54:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-11-23 01:54:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-23 01:54:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-23 01:54:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-11-23 01:54:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-11-23 01:54:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-11-23 01:54:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-11-23 01:54:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-11-23 01:54:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-11-23 01:54:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-23 01:54:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-23 01:54:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-23 01:54:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-23 01:54:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-11-23 01:54:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-11-23 01:54:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-11-23 01:54:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-11-23 01:54:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:54:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-23 01:54:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-23 01:54:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-11-23 01:54:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-11-23 01:54:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:54:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-23 01:54:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-23 01:54:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-23 01:54:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-23 01:54:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-11-23 01:54:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-11-23 01:54:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-23 01:54:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-23 01:54:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-11-23 01:54:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-11-23 01:54:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:54:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-11-23 01:54:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-11-23 01:54:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-11-23 01:54:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-11-23 01:54:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 01:54:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 01:54:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-11-23 01:54:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-11-23 01:54:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-11-23 01:54:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-11-23 01:54:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 01:54:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 01:54:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-11-23 01:54:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-11-23 01:54:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:54:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-23 01:54:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-23 01:54:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 01:54:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 01:54:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:54:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-11-23 01:54:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-11-23 01:54:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:54:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-11-23 01:54:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-11-23 01:54:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-11-23 01:54:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-11-23 01:54:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-11-23 01:54:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-11-23 01:54:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-23 01:54:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-23 01:54:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:54:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-23 01:54:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-23 01:54:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:54:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:54:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 01:54:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 01:54:31,056 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:54:31,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:54:31,418 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 01:56:33,253 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:56:34,657 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:56:34,657 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:56:34,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:34 BoogieIcfgContainer [2021-11-23 01:56:34,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:56:34,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:56:34,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:56:34,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:56:34,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:54:25" (1/3) ... [2021-11-23 01:56:34,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50725ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:34, skipping insertion in model container [2021-11-23 01:56:34,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:54:28" (2/3) ... [2021-11-23 01:56:34,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50725ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:34, skipping insertion in model container [2021-11-23 01:56:34,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:34" (3/3) ... [2021-11-23 01:56:34,673 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2021-11-23 01:56:34,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:56:34,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:56:34,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:56:34,753 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:56:34,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:56:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) [2021-11-23 01:56:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2820 [2021-11-23 01:56:35,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:35,121 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:35,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -555591902, now seen corresponding path program 1 times [2021-11-23 01:56:35,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:35,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167898921] [2021-11-23 01:56:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:56:41,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:41,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167898921] [2021-11-23 01:56:41,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167898921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:41,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:41,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:41,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652348048] [2021-11-23 01:56:41,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:41,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:41,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:41,321 INFO L87 Difference]: Start difference. First operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:56:43,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:46,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:47,324 INFO L93 Difference]: Finished difference Result 6742 states and 11060 transitions. [2021-11-23 01:56:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2819 [2021-11-23 01:56:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:47,396 INFO L225 Difference]: With dead ends: 6742 [2021-11-23 01:56:47,396 INFO L226 Difference]: Without dead ends: 4484 [2021-11-23 01:56:47,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:47,445 INFO L933 BasicCegarLoop]: 4382 mSDtfsCounter, 3217 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 8232 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:47,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3217 Valid, 8232 Invalid, 365 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 01:56:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2021-11-23 01:56:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4467. [2021-11-23 01:56:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3026 states have (on average 1.3995373430270985) internal successors, (4235), 3037 states have internal predecessors, (4235), 1321 states have call successors, (1321), 120 states have call predecessors, (1321), 119 states have return successors, (1313), 1311 states have call predecessors, (1313), 1313 states have call successors, (1313) [2021-11-23 01:56:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6869 transitions. [2021-11-23 01:56:48,275 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6869 transitions. Word has length 2819 [2021-11-23 01:56:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:48,285 INFO L470 AbstractCegarLoop]: Abstraction has 4467 states and 6869 transitions. [2021-11-23 01:56:48,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:56:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6869 transitions. [2021-11-23 01:56:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2821 [2021-11-23 01:56:49,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:49,025 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:49,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:56:49,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2054863785, now seen corresponding path program 1 times [2021-11-23 01:56:49,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:49,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112794842] [2021-11-23 01:56:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:49,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:56:53,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:53,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112794842] [2021-11-23 01:56:53,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112794842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:53,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:53,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:56:53,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446678108] [2021-11-23 01:56:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:53,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:56:53,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:56:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:53,644 INFO L87 Difference]: Start difference. First operand 4467 states and 6869 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:56:55,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:57,500 INFO L93 Difference]: Finished difference Result 12317 states and 18985 transitions. [2021-11-23 01:56:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2820 [2021-11-23 01:56:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:57,606 INFO L225 Difference]: With dead ends: 12317 [2021-11-23 01:56:57,606 INFO L226 Difference]: Without dead ends: 8386 [2021-11-23 01:56:57,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:57,650 INFO L933 BasicCegarLoop]: 4207 mSDtfsCounter, 3034 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:57,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 7873 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 01:56:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2021-11-23 01:56:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 8369. [2021-11-23 01:56:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 5765 states have (on average 1.417692974848222) internal successors, (8173), 5782 states have internal predecessors, (8173), 2366 states have call successors, (2366), 238 states have call predecessors, (2366), 237 states have return successors, (2358), 2352 states have call predecessors, (2358), 2358 states have call successors, (2358) [2021-11-23 01:56:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12897 transitions. [2021-11-23 01:56:58,696 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12897 transitions. Word has length 2820 [2021-11-23 01:56:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:58,702 INFO L470 AbstractCegarLoop]: Abstraction has 8369 states and 12897 transitions. [2021-11-23 01:56:58,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:56:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12897 transitions. [2021-11-23 01:56:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2021-11-23 01:56:58,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:58,832 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:56:58,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:56:58,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:56:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2107050830, now seen corresponding path program 1 times [2021-11-23 01:56:58,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:58,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928554500] [2021-11-23 01:56:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:58,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:57:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:57:02,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:57:02,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928554500] [2021-11-23 01:57:02,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928554500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:57:02,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:57:02,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:57:02,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560188551] [2021-11-23 01:57:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:57:03,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:57:03,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:57:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:57:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:03,005 INFO L87 Difference]: Start difference. First operand 8369 states and 12897 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:05,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:57:07,400 INFO L93 Difference]: Finished difference Result 23966 states and 36978 transitions. [2021-11-23 01:57:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:57:07,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2021-11-23 01:57:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:57:07,592 INFO L225 Difference]: With dead ends: 23966 [2021-11-23 01:57:07,593 INFO L226 Difference]: Without dead ends: 16133 [2021-11-23 01:57:07,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:07,682 INFO L933 BasicCegarLoop]: 4211 mSDtfsCounter, 3013 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 7874 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:57:07,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3013 Valid, 7874 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 365 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 01:57:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2021-11-23 01:57:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 16113. [2021-11-23 01:57:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16113 states, 11205 states have (on average 1.4276662204373047) internal successors, (15997), 11234 states have internal predecessors, (15997), 4434 states have call successors, (4434), 474 states have call predecessors, (4434), 473 states have return successors, (4426), 4412 states have call predecessors, (4426), 4426 states have call successors, (4426) [2021-11-23 01:57:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16113 states to 16113 states and 24857 transitions. [2021-11-23 01:57:09,310 INFO L78 Accepts]: Start accepts. Automaton has 16113 states and 24857 transitions. Word has length 2823 [2021-11-23 01:57:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:57:09,320 INFO L470 AbstractCegarLoop]: Abstraction has 16113 states and 24857 transitions. [2021-11-23 01:57:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 16113 states and 24857 transitions. [2021-11-23 01:57:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2021-11-23 01:57:09,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:57:09,400 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:57:09,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:57:09,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:57:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:57:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 73169745, now seen corresponding path program 1 times [2021-11-23 01:57:09,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:57:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495043720] [2021-11-23 01:57:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:57:09,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:57:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:57:14,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:57:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495043720] [2021-11-23 01:57:14,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495043720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:57:14,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:57:14,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:57:14,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941903799] [2021-11-23 01:57:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:57:14,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:57:14,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:57:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:57:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:14,064 INFO L87 Difference]: Start difference. First operand 16113 states and 24857 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:16,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:18,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:57:20,511 INFO L93 Difference]: Finished difference Result 47150 states and 72858 transitions. [2021-11-23 01:57:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:57:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2021-11-23 01:57:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:57:20,728 INFO L225 Difference]: With dead ends: 47150 [2021-11-23 01:57:20,729 INFO L226 Difference]: Without dead ends: 31573 [2021-11-23 01:57:20,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:20,834 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 3010 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 7890 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:57:20,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 7890 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 01:57:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31573 states. [2021-11-23 01:57:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31573 to 31545. [2021-11-23 01:57:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31545 states, 22053 states have (on average 1.4333197297419853) internal successors, (31609), 22114 states have internal predecessors, (31609), 8546 states have call successors, (8546), 946 states have call predecessors, (8546), 945 states have return successors, (8610), 8500 states have call predecessors, (8610), 8538 states have call successors, (8610) [2021-11-23 01:57:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31545 states to 31545 states and 48765 transitions. [2021-11-23 01:57:23,427 INFO L78 Accepts]: Start accepts. Automaton has 31545 states and 48765 transitions. Word has length 2823 [2021-11-23 01:57:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:57:23,432 INFO L470 AbstractCegarLoop]: Abstraction has 31545 states and 48765 transitions. [2021-11-23 01:57:23,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 31545 states and 48765 transitions. [2021-11-23 01:57:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2823 [2021-11-23 01:57:23,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:57:23,502 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:57:23,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:57:23,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:57:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:57:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash 31017387, now seen corresponding path program 1 times [2021-11-23 01:57:23,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:57:23,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806741352] [2021-11-23 01:57:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:57:23,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:57:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:57:27,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:57:27,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806741352] [2021-11-23 01:57:27,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806741352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:57:27,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:57:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:57:27,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117605029] [2021-11-23 01:57:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:57:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:57:27,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:57:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:57:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:27,759 INFO L87 Difference]: Start difference. First operand 31545 states and 48765 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:29,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:32,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:57:34,876 INFO L93 Difference]: Finished difference Result 93350 states and 144422 transitions. [2021-11-23 01:57:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:57:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2822 [2021-11-23 01:57:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:57:35,381 INFO L225 Difference]: With dead ends: 93350 [2021-11-23 01:57:35,381 INFO L226 Difference]: Without dead ends: 62341 [2021-11-23 01:57:35,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:35,601 INFO L933 BasicCegarLoop]: 4233 mSDtfsCounter, 3011 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 7896 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:57:35,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3020 Valid, 7896 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 01:57:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62341 states. [2021-11-23 01:57:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62341 to 62313. [2021-11-23 01:57:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62313 states, 43669 states have (on average 1.4357324417779203) internal successors, (62697), 43794 states have internal predecessors, (62697), 16754 states have call successors, (16754), 1890 states have call predecessors, (16754), 1889 states have return successors, (16962), 16660 states have call predecessors, (16962), 16746 states have call successors, (16962) [2021-11-23 01:57:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62313 states to 62313 states and 96413 transitions. [2021-11-23 01:57:40,375 INFO L78 Accepts]: Start accepts. Automaton has 62313 states and 96413 transitions. Word has length 2822 [2021-11-23 01:57:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:57:40,380 INFO L470 AbstractCegarLoop]: Abstraction has 62313 states and 96413 transitions. [2021-11-23 01:57:40,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 62313 states and 96413 transitions. [2021-11-23 01:57:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2826 [2021-11-23 01:57:40,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:57:40,882 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:57:40,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:57:40,883 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:57:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:57:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1920365363, now seen corresponding path program 1 times [2021-11-23 01:57:40,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:57:40,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452494913] [2021-11-23 01:57:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:57:40,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:57:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:57:44,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:57:44,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452494913] [2021-11-23 01:57:44,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452494913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:57:44,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:57:44,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:57:44,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996728804] [2021-11-23 01:57:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:57:44,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:57:44,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:57:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:57:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:44,112 INFO L87 Difference]: Start difference. First operand 62313 states and 96413 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:46,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:57:50,510 INFO L93 Difference]: Finished difference Result 185402 states and 286890 transitions. [2021-11-23 01:57:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:57:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2825 [2021-11-23 01:57:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:57:51,351 INFO L225 Difference]: With dead ends: 185402 [2021-11-23 01:57:51,353 INFO L226 Difference]: Without dead ends: 123625 [2021-11-23 01:57:51,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:57:51,837 INFO L933 BasicCegarLoop]: 4248 mSDtfsCounter, 3005 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 7911 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:57:51,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3005 Valid, 7911 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 365 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 01:57:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123625 states. [2021-11-23 01:57:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123625 to 123577. [2021-11-23 01:57:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123577 states, 86717 states have (on average 1.4369616107568297) internal successors, (124609), 86962 states have internal predecessors, (124609), 33082 states have call successors, (33082), 3778 states have call predecessors, (33082), 3777 states have return successors, (33506), 32900 states have call predecessors, (33506), 33074 states have call successors, (33506) [2021-11-23 01:57:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123577 states to 123577 states and 191197 transitions. [2021-11-23 01:57:58,988 INFO L78 Accepts]: Start accepts. Automaton has 123577 states and 191197 transitions. Word has length 2825 [2021-11-23 01:57:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:57:58,992 INFO L470 AbstractCegarLoop]: Abstraction has 123577 states and 191197 transitions. [2021-11-23 01:57:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:57:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 123577 states and 191197 transitions. [2021-11-23 01:57:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2826 [2021-11-23 01:57:59,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:57:59,063 INFO L514 BasicCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:57:59,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:57:59,064 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:57:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:57:59,065 INFO L85 PathProgramCache]: Analyzing trace with hash -473125235, now seen corresponding path program 1 times [2021-11-23 01:57:59,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:57:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649614630] [2021-11-23 01:57:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:57:59,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2021-11-23 01:58:02,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649614630] [2021-11-23 01:58:02,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649614630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:02,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:02,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:58:02,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370548709] [2021-11-23 01:58:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:02,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:58:02,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:58:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:58:02,293 INFO L87 Difference]: Start difference. First operand 123577 states and 191197 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2021-11-23 01:58:04,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []