./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-08_1a-drivers--net--wireless--ipw2x00--ipw2100.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_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/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_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/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_f9f442e8-7445-4069-87f3-7cad131d85b2/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 afb4529a44258a1ad1c830edd6a8c34bf609dc3c51ed05cdac5cda6297df1723 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:28:32,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:28:32,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:28:32,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:28:32,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:28:32,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:28:32,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:28:32,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:28:32,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:28:32,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:28:32,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:28:32,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:28:32,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:28:32,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:28:32,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:28:32,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:28:32,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:28:32,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:28:32,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:28:32,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:28:32,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:28:32,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:28:33,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:28:33,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:28:33,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:28:33,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:28:33,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:28:33,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:28:33,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:28:33,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:28:33,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:28:33,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:28:33,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:28:33,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:28:33,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:28:33,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:28:33,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:28:33,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:28:33,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:28:33,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:28:33,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:28:33,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:28:33,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:28:33,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:28:33,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:28:33,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:28:33,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:28:33,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:28:33,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:28:33,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:28:33,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:28:33,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:28:33,107 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:28:33,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:28:33,108 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:28:33,108 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:28:33,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:28:33,109 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:28:33,109 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:28:33,109 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:28:33,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:28:33,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:28:33,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:28:33,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:28:33,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:28:33,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:28:33,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:28:33,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:28:33,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:28:33,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:28:33,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:28:33,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:28:33,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:28:33,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:28:33,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:28:33,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:28:33,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:28:33,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:28:33,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:28:33,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:28:33,118 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_f9f442e8-7445-4069-87f3-7cad131d85b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afb4529a44258a1ad1c830edd6a8c34bf609dc3c51ed05cdac5cda6297df1723 [2021-11-23 03:28:33,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:28:33,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:28:33,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:28:33,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:28:33,578 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:28:33,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2021-11-23 03:28:33,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/data/0991ed868/e44c2a8e96074e71ad334735ef9e2a93/FLAG7f678fd24 [2021-11-23 03:28:34,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:28:34,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2021-11-23 03:28:35,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/data/0991ed868/e44c2a8e96074e71ad334735ef9e2a93/FLAG7f678fd24 [2021-11-23 03:28:35,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/data/0991ed868/e44c2a8e96074e71ad334735ef9e2a93 [2021-11-23 03:28:35,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:28:35,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:28:35,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:28:35,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:28:35,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:28:35,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:35" (1/1) ... [2021-11-23 03:28:35,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be81c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:35, skipping insertion in model container [2021-11-23 03:28:35,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:35" (1/1) ... [2021-11-23 03:28:35,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:28:35,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:28:42,081 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_f9f442e8-7445-4069-87f3-7cad131d85b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[730765,730778] [2021-11-23 03:28:42,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:28:42,311 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:28:43,377 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_f9f442e8-7445-4069-87f3-7cad131d85b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[730765,730778] [2021-11-23 03:28:43,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:28:43,847 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:28:43,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43 WrapperNode [2021-11-23 03:28:43,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:28:43,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:28:43,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:28:43,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:28:43,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:44,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,055 INFO L137 Inliner]: procedures = 534, calls = 11372, calls flagged for inlining = 242, calls inlined = 201, statements flattened = 14659 [2021-11-23 03:28:45,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:28:45,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:28:45,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:28:45,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:28:45,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:45,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:46,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:46,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:28:46,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:28:46,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:28:46,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:28:46,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (1/1) ... [2021-11-23 03:28:46,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:28:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:28:46,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:28:46,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:28:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 03:28:46,238 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 03:28:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:28:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:28:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-23 03:28:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-23 03:28:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure eth_zero_addr [2021-11-23 03:28:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_zero_addr [2021-11-23 03:28:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-23 03:28:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-23 03:28:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-23 03:28:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-23 03:28:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:28:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:28:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:28:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:28:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:28:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:28:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-23 03:28:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-23 03:28:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-23 03:28:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-23 03:28:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure __tolower [2021-11-23 03:28:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __tolower [2021-11-23 03:28:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-23 03:28:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-23 03:28:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_7 [2021-11-23 03:28:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_7 [2021-11-23 03:28:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:28:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:28:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 03:28:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 03:28:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-23 03:28:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-23 03:28:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-23 03:28:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-23 03:28:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:28:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:28:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:28:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:28:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:28:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:28:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:28:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:28:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:28:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:28:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-23 03:28:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-23 03:28:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:28:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:28:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-23 03:28:46,252 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-23 03:28:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-23 03:28:46,253 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-23 03:28:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-23 03:28:46,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-23 03:28:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 03:28:46,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 03:28:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:28:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-23 03:28:46,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-23 03:28:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:28:46,256 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:28:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-23 03:28:46,256 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-23 03:28:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:28:46,256 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:28:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-23 03:28:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-23 03:28:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:28:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:28:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-23 03:28:46,258 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-23 03:28:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:28:46,258 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:28:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 03:28:46,259 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 03:28:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:28:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:28:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:28:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-23 03:28:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-23 03:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-23 03:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-23 03:28:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-11-23 03:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-11-23 03:28:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-23 03:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-23 03:28:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:28:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:28:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-23 03:28:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-23 03:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-23 03:28:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-23 03:28:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:28:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:28:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:28:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:28:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 03:28:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 03:28:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-23 03:28:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-23 03:28:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:28:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:28:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-23 03:28:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-23 03:28:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-23 03:28:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-23 03:28:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-23 03:28:46,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-23 03:28:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 03:28:46,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 03:28:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_scan_event [2021-11-23 03:28:46,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_scan_event [2021-11-23 03:28:46,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:28:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:28:46,278 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-23 03:28:46,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-23 03:28:46,278 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:28:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:28:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:28:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-23 03:28:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-23 03:28:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:28:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-23 03:28:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-23 03:28:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_security_work [2021-11-23 03:28:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_security_work [2021-11-23 03:28:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-23 03:28:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-23 03:28:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:28:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:28:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-23 03:28:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-23 03:28:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 03:28:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 03:28:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-23 03:28:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-23 03:28:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-23 03:28:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-23 03:28:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 03:28:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 03:28:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-23 03:28:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-23 03:28:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-23 03:28:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-23 03:28:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:28:46,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:28:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-23 03:28:46,290 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-23 03:28:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-23 03:28:46,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-23 03:28:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-23 03:28:46,291 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-23 03:28:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 03:28:46,291 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 03:28:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:28:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:28:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:28:46,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:28:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-23 03:28:46,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-23 03:28:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 03:28:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 03:28:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-23 03:28:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-23 03:28:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-23 03:28:46,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-23 03:28:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-23 03:28:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-23 03:28:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-23 03:28:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-23 03:28:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:28:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:28:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-23 03:28:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-23 03:28:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-23 03:28:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-23 03:28:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-23 03:28:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-23 03:28:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:28:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:28:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:28:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:28:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-23 03:28:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-23 03:28:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-23 03:28:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-23 03:28:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-23 03:28:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-23 03:28:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 03:28:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 03:28:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wx_event_work [2021-11-23 03:28:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wx_event_work [2021-11-23 03:28:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hang_check [2021-11-23 03:28:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hang_check [2021-11-23 03:28:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:28:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:28:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:28:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:28:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rf_kill [2021-11-23 03:28:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rf_kill [2021-11-23 03:28:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:28:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:28:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-23 03:28:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-23 03:28:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 03:28:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 03:28:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:28:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:28:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:28:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-23 03:28:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-23 03:28:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:28:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:28:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-23 03:28:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-23 03:28:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_address [2021-11-23 03:28:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_address [2021-11-23 03:28:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:28:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-23 03:28:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-23 03:28:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-23 03:28:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-23 03:28:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-23 03:28:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-23 03:28:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-23 03:28:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-23 03:28:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_7 [2021-11-23 03:28:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_7 [2021-11-23 03:28:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 03:28:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 03:28:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:28:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-23 03:28:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-23 03:28:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 03:28:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 03:28:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:28:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:28:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-23 03:28:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-23 03:28:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-23 03:28:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-23 03:28:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:28:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:28:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:28:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:28:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-23 03:28:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-23 03:28:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 03:28:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 03:28:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-23 03:28:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-23 03:28:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-23 03:28:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-23 03:28:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-23 03:28:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-23 03:28:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_change_mtu [2021-11-23 03:28:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_change_mtu [2021-11-23 03:28:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-23 03:28:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-23 03:28:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-23 03:28:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-23 03:28:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:28:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:28:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-23 03:28:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-23 03:28:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-23 03:28:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-23 03:28:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-23 03:28:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-23 03:28:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-23 03:28:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-23 03:28:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-23 03:28:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-23 03:28:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:28:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:28:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:28:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-23 03:28:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-23 03:28:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-23 03:28:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-23 03:28:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:28:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:28:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-23 03:28:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-23 03:28:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-23 03:28:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-23 03:28:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-23 03:28:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-23 03:28:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 03:28:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 03:28:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_radio_kill_sw [2021-11-23 03:28:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_radio_kill_sw [2021-11-23 03:28:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-23 03:28:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-23 03:28:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:28:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:28:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 03:28:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 03:28:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 03:28:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 03:28:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-23 03:28:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-23 03:28:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2021-11-23 03:28:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2021-11-23 03:28:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:28:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:28:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 03:28:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 03:28:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:28:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:28:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 03:28:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 03:28:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-23 03:28:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-23 03:28:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 03:28:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 03:28:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 03:28:46,328 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 03:28:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-23 03:28:46,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-23 03:28:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-23 03:28:46,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-23 03:28:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:28:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-23 03:28:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-23 03:28:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 03:28:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 03:28:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-23 03:28:46,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-23 03:28:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-23 03:28:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-23 03:28:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-23 03:28:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-23 03:28:47,879 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:28:47,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:29:03,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:31:31,938 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:31:38,173 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:31:38,174 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:31:38,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:38 BoogieIcfgContainer [2021-11-23 03:31:38,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:31:38,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:31:38,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:31:38,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:31:38,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:35" (1/3) ... [2021-11-23 03:31:38,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b813bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:38, skipping insertion in model container [2021-11-23 03:31:38,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:43" (2/3) ... [2021-11-23 03:31:38,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b813bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:38, skipping insertion in model container [2021-11-23 03:31:38,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:38" (3/3) ... [2021-11-23 03:31:38,205 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2021-11-23 03:31:38,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:31:38,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:31:38,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:31:38,330 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 03:31:38,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:31:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 3100 states, 1996 states have (on average 1.3772545090180361) internal successors, (2749), 2045 states have internal predecessors, (2749), 943 states have call successors, (943), 160 states have call predecessors, (943), 159 states have return successors, (914), 911 states have call predecessors, (914), 914 states have call successors, (914) [2021-11-23 03:31:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-23 03:31:38,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:38,503 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:31:38,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash -697023533, now seen corresponding path program 1 times [2021-11-23 03:31:38,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:38,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749383771] [2021-11-23 03:31:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:38,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10047 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10047 trivial. 0 not checked. [2021-11-23 03:31:41,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749383771] [2021-11-23 03:31:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749383771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:41,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:41,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:31:41,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418334466] [2021-11-23 03:31:41,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:41,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:31:41,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:41,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:31:41,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:31:41,261 INFO L87 Difference]: Start difference. First operand has 3100 states, 1996 states have (on average 1.3772545090180361) internal successors, (2749), 2045 states have internal predecessors, (2749), 943 states have call successors, (943), 160 states have call predecessors, (943), 159 states have return successors, (914), 911 states have call predecessors, (914), 914 states have call successors, (914) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2021-11-23 03:31:43,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:46,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:49,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:51,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:54,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:56,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:31:58,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:32:00,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:32:02,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:05,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:11,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:14,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:16,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:19,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:19,628 INFO L93 Difference]: Finished difference Result 8746 states and 13034 transitions. [2021-11-23 03:32:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:19,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 622 [2021-11-23 03:32:19,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:19,732 INFO L225 Difference]: With dead ends: 8746 [2021-11-23 03:32:19,732 INFO L226 Difference]: Without dead ends: 5687 [2021-11-23 03:32:19,764 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 03:32:19,767 INFO L933 BasicCegarLoop]: 4925 mSDtfsCounter, 3917 mSDsluCounter, 4579 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 5 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3923 SdHoareTripleChecker+Valid, 9053 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:19,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3923 Valid, 9053 Invalid, 937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 921 Invalid, 11 Unknown, 0 Unchecked, 37.8s Time] [2021-11-23 03:32:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2021-11-23 03:32:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5681. [2021-11-23 03:32:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 3710 states have (on average 1.3654986522911052) internal successors, (5066), 3748 states have internal predecessors, (5066), 1667 states have call successors, (1667), 304 states have call predecessors, (1667), 303 states have return successors, (1670), 1658 states have call predecessors, (1670), 1666 states have call successors, (1670) [2021-11-23 03:32:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 8403 transitions. [2021-11-23 03:32:20,348 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 8403 transitions. Word has length 622 [2021-11-23 03:32:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:20,358 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 8403 transitions. [2021-11-23 03:32:20,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2021-11-23 03:32:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 8403 transitions. [2021-11-23 03:32:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-11-23 03:32:20,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:20,389 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:20,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:32:20,389 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1753796951, now seen corresponding path program 1 times [2021-11-23 03:32:20,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:20,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250704043] [2021-11-23 03:32:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:20,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2021-11-23 03:32:22,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:22,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250704043] [2021-11-23 03:32:22,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250704043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:22,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:22,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:22,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13735875] [2021-11-23 03:32:22,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:22,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:22,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:22,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:22,364 INFO L87 Difference]: Start difference. First operand 5681 states and 8403 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 03:32:24,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:27,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:30,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:32,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:35,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:37,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:42,168 WARN L534 Checker$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 03:32:47,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:51,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:54,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:56,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:59,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:59,465 INFO L93 Difference]: Finished difference Result 10851 states and 16045 transitions. [2021-11-23 03:32:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:59,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 637 [2021-11-23 03:32:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:59,596 INFO L225 Difference]: With dead ends: 10851 [2021-11-23 03:32:59,596 INFO L226 Difference]: Without dead ends: 10846 [2021-11-23 03:32:59,609 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 03:32:59,611 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 3860 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3870 SdHoareTripleChecker+Valid, 8807 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:59,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3870 Valid, 8807 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 909 Invalid, 12 Unknown, 0 Unchecked, 36.7s Time] [2021-11-23 03:32:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10846 states. [2021-11-23 03:33:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10846 to 10838. [2021-11-23 03:33:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10838 states, 7100 states have (on average 1.3688732394366196) internal successors, (9719), 7176 states have internal predecessors, (9719), 3150 states have call successors, (3150), 590 states have call predecessors, (3150), 587 states have return successors, (3161), 3131 states have call predecessors, (3161), 3149 states have call successors, (3161) [2021-11-23 03:33:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10838 states to 10838 states and 16030 transitions. [2021-11-23 03:33:00,546 INFO L78 Accepts]: Start accepts. Automaton has 10838 states and 16030 transitions. Word has length 637 [2021-11-23 03:33:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 10838 states and 16030 transitions. [2021-11-23 03:33:00,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-23 03:33:00,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10838 states and 16030 transitions. [2021-11-23 03:33:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-11-23 03:33:00,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:00,610 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:00,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:33:00,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1413147473, now seen corresponding path program 1 times [2021-11-23 03:33:00,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:00,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989334914] [2021-11-23 03:33:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:00,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10071 trivial. 0 not checked. [2021-11-23 03:33:02,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989334914] [2021-11-23 03:33:02,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989334914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:02,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:02,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:02,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306058675] [2021-11-23 03:33:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:02,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:02,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:02,424 INFO L87 Difference]: Start difference. First operand 10838 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 03:33:04,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:08,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:10,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:12,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:15,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:16,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:19,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:22,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:26,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:29,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:31,459 WARN L534 Checker$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 03:33:33,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:37,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:39,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:41,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:42,534 INFO L93 Difference]: Finished difference Result 31758 states and 46953 transitions. [2021-11-23 03:33:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:42,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 692 [2021-11-23 03:33:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:42,728 INFO L225 Difference]: With dead ends: 31758 [2021-11-23 03:33:42,728 INFO L226 Difference]: Without dead ends: 21029 [2021-11-23 03:33:42,819 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 03:33:42,821 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 3738 mSDsluCounter, 4516 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 8920 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:42,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 8920 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 919 Invalid, 13 Unknown, 0 Unchecked, 39.2s Time] [2021-11-23 03:33:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21029 states. [2021-11-23 03:33:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21029 to 21018. [2021-11-23 03:33:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21018 states, 13784 states have (on average 1.3705020313406848) internal successors, (18891), 13936 states have internal predecessors, (18891), 6076 states have call successors, (6076), 1164 states have call predecessors, (6076), 1157 states have return successors, (6103), 6037 states have call predecessors, (6103), 6075 states have call successors, (6103) [2021-11-23 03:33:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21018 states to 21018 states and 31070 transitions. [2021-11-23 03:33:44,350 INFO L78 Accepts]: Start accepts. Automaton has 21018 states and 31070 transitions. Word has length 692 [2021-11-23 03:33:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:44,352 INFO L470 AbstractCegarLoop]: Abstraction has 21018 states and 31070 transitions. [2021-11-23 03:33:44,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 03:33:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 21018 states and 31070 transitions. [2021-11-23 03:33:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2021-11-23 03:33:44,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:44,426 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:44,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:33:44,427 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1248302164, now seen corresponding path program 1 times [2021-11-23 03:33:44,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:44,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050649449] [2021-11-23 03:33:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:44,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10266 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10255 trivial. 0 not checked. [2021-11-23 03:33:46,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050649449] [2021-11-23 03:33:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050649449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:46,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:46,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129578428] [2021-11-23 03:33:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:46,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:46,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:46,552 INFO L87 Difference]: Start difference. First operand 21018 states and 31070 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2021-11-23 03:33:48,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:52,237 WARN L534 Checker$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 03:33:55,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:57,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:59,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:02,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:04,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:34:06,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:34:08,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:11,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:15,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:17,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:19,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:21,637 WARN L534 Checker$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 03:34:23,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:27,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:30,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:32,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:32,819 INFO L93 Difference]: Finished difference Result 57695 states and 85368 transitions. [2021-11-23 03:34:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:32,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 809 [2021-11-23 03:34:32,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:33,099 INFO L225 Difference]: With dead ends: 57695 [2021-11-23 03:34:33,100 INFO L226 Difference]: Without dead ends: 36786 [2021-11-23 03:34:33,229 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 03:34:33,232 INFO L933 BasicCegarLoop]: 4841 mSDtfsCounter, 2924 mSDsluCounter, 4472 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 8872 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:33,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2929 Valid, 8872 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 15 Unknown, 0 Unchecked, 45.2s Time] [2021-11-23 03:34:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36786 states. [2021-11-23 03:34:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36786 to 36772. [2021-11-23 03:34:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36772 states, 24360 states have (on average 1.3769704433497536) internal successors, (33543), 24608 states have internal predecessors, (33543), 10426 states have call successors, (10426), 2000 states have call predecessors, (10426), 1985 states have return successors, (10469), 10363 states have call predecessors, (10469), 10425 states have call successors, (10469) [2021-11-23 03:34:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36772 states to 36772 states and 54438 transitions. [2021-11-23 03:34:35,914 INFO L78 Accepts]: Start accepts. Automaton has 36772 states and 54438 transitions. Word has length 809 [2021-11-23 03:34:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:35,916 INFO L470 AbstractCegarLoop]: Abstraction has 36772 states and 54438 transitions. [2021-11-23 03:34:35,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2021-11-23 03:34:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 36772 states and 54438 transitions. [2021-11-23 03:34:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2021-11-23 03:34:36,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:36,055 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:36,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:34:36,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash 624969181, now seen corresponding path program 1 times [2021-11-23 03:34:36,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:36,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934826722] [2021-11-23 03:34:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:36,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15594 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15594 trivial. 0 not checked. [2021-11-23 03:34:38,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934826722] [2021-11-23 03:34:38,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934826722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:38,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:38,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072512188] [2021-11-23 03:34:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:38,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:38,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:38,296 INFO L87 Difference]: Start difference. First operand 36772 states and 54438 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-23 03:34:40,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:43,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:46,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:48,415 WARN L534 Checker$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 03:34:51,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:53,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:34:54,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:34:57,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:02,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:04,775 WARN L534 Checker$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 03:35:07,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:10,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:13,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:15,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:15,918 INFO L93 Difference]: Finished difference Result 54942 states and 81331 transitions. [2021-11-23 03:35:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:15,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 832 [2021-11-23 03:35:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:16,469 INFO L225 Difference]: With dead ends: 54942 [2021-11-23 03:35:16,469 INFO L226 Difference]: Without dead ends: 54937 [2021-11-23 03:35:16,499 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 03:35:16,500 INFO L933 BasicCegarLoop]: 4865 mSDtfsCounter, 3841 mSDsluCounter, 4364 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 8778 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:16,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3849 Valid, 8778 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 910 Invalid, 12 Unknown, 0 Unchecked, 36.7s Time] [2021-11-23 03:35:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54937 states. [2021-11-23 03:35:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54937 to 54931. [2021-11-23 03:35:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54931 states, 36403 states have (on average 1.3773315386094553) internal successors, (50139), 36775 states have internal predecessors, (50139), 15554 states have call successors, (15554), 2996 states have call predecessors, (15554), 2973 states have return successors, (15621), 15459 states have call predecessors, (15621), 15553 states have call successors, (15621) [2021-11-23 03:35:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54931 states to 54931 states and 81314 transitions. [2021-11-23 03:35:20,588 INFO L78 Accepts]: Start accepts. Automaton has 54931 states and 81314 transitions. Word has length 832 [2021-11-23 03:35:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:20,590 INFO L470 AbstractCegarLoop]: Abstraction has 54931 states and 81314 transitions. [2021-11-23 03:35:20,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-23 03:35:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 54931 states and 81314 transitions. [2021-11-23 03:35:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2021-11-23 03:35:20,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:20,707 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:20,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:35:20,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:20,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2105926846, now seen corresponding path program 1 times [2021-11-23 03:35:20,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:20,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526774844] [2021-11-23 03:35:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:20,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10716 trivial. 0 not checked. [2021-11-23 03:35:22,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526774844] [2021-11-23 03:35:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526774844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:22,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:22,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:35:22,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855605286] [2021-11-23 03:35:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:22,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:35:22,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:22,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:35:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:22,439 INFO L87 Difference]: Start difference. First operand 54931 states and 81314 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:35:24,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:28,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:30,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:33,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:35,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:41,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:46,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:48,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:51,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:53,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:56,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:56,952 INFO L93 Difference]: Finished difference Result 87175 states and 129009 transitions. [2021-11-23 03:35:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:35:56,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 838 [2021-11-23 03:35:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:57,191 INFO L225 Difference]: With dead ends: 87175 [2021-11-23 03:35:57,191 INFO L226 Difference]: Without dead ends: 32349 [2021-11-23 03:35:57,438 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 03:35:57,440 INFO L933 BasicCegarLoop]: 4074 mSDtfsCounter, 5 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8141 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:57,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8141 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 909 Invalid, 11 Unknown, 0 Unchecked, 33.1s Time] [2021-11-23 03:35:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32349 states. [2021-11-23 03:35:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32349 to 32315. [2021-11-23 03:35:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32315 states, 21390 states have (on average 1.3763908368396447) internal successors, (29441), 21608 states have internal predecessors, (29441), 9167 states have call successors, (9167), 1770 states have call predecessors, (9167), 1757 states have return successors, (9204), 9111 states have call predecessors, (9204), 9166 states have call successors, (9204) [2021-11-23 03:35:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32315 states to 32315 states and 47812 transitions. [2021-11-23 03:35:59,217 INFO L78 Accepts]: Start accepts. Automaton has 32315 states and 47812 transitions. Word has length 838 [2021-11-23 03:35:59,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:59,218 INFO L470 AbstractCegarLoop]: Abstraction has 32315 states and 47812 transitions. [2021-11-23 03:35:59,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:35:59,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32315 states and 47812 transitions. [2021-11-23 03:35:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2021-11-23 03:35:59,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:59,292 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:59,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:35:59,293 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1041300460, now seen corresponding path program 1 times [2021-11-23 03:35:59,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:59,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419006267] [2021-11-23 03:35:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:59,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10267 trivial. 0 not checked. [2021-11-23 03:36:01,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419006267] [2021-11-23 03:36:01,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419006267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:01,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:01,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:01,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517578681] [2021-11-23 03:36:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:01,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:01,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:01,194 INFO L87 Difference]: Start difference. First operand 32315 states and 47812 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:36:03,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:06,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:08,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:11,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:15,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:36:17,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:36:22,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:24,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:27,175 WARN L534 Checker$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 03:36:29,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:32,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:34,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:37,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:40,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:43,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:44,589 INFO L93 Difference]: Finished difference Result 89092 states and 131793 transitions. [2021-11-23 03:36:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 840 [2021-11-23 03:36:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:44,969 INFO L225 Difference]: With dead ends: 89092 [2021-11-23 03:36:44,970 INFO L226 Difference]: Without dead ends: 56886 [2021-11-23 03:36:45,125 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 03:36:45,126 INFO L933 BasicCegarLoop]: 5431 mSDtfsCounter, 3833 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 9496 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:45,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3839 Valid, 9496 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 14 Unknown, 0 Unchecked, 41.8s Time] [2021-11-23 03:36:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56886 states. [2021-11-23 03:36:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56886 to 56849. [2021-11-23 03:36:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56849 states, 37653 states have (on average 1.376782726475978) internal successors, (51840), 38041 states have internal predecessors, (51840), 16092 states have call successors, (16092), 3126 states have call predecessors, (16092), 3103 states have return successors, (16161), 15991 states have call predecessors, (16161), 16091 states have call successors, (16161) [2021-11-23 03:36:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56849 states to 56849 states and 84093 transitions. [2021-11-23 03:36:48,309 INFO L78 Accepts]: Start accepts. Automaton has 56849 states and 84093 transitions. Word has length 840 [2021-11-23 03:36:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:48,310 INFO L470 AbstractCegarLoop]: Abstraction has 56849 states and 84093 transitions. [2021-11-23 03:36:48,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:36:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 56849 states and 84093 transitions. [2021-11-23 03:36:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2021-11-23 03:36:48,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:48,785 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:48,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:36:48,786 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash -871472804, now seen corresponding path program 1 times [2021-11-23 03:36:48,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:48,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97875264] [2021-11-23 03:36:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:48,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15790 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15790 trivial. 0 not checked. [2021-11-23 03:36:51,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:51,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97875264] [2021-11-23 03:36:51,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97875264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:51,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:51,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:51,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793432794] [2021-11-23 03:36:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:51,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:51,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:51,132 INFO L87 Difference]: Start difference. First operand 56849 states and 84093 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-23 03:36:53,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:56,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:58,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:00,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:04,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:37:06,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:09,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:11,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:14,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:17,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:19,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:21,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:24,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:27,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:30,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:31,603 INFO L93 Difference]: Finished difference Result 93195 states and 137786 transitions. [2021-11-23 03:37:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:31,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 958 [2021-11-23 03:37:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:32,156 INFO L225 Difference]: With dead ends: 93195 [2021-11-23 03:37:32,156 INFO L226 Difference]: Without dead ends: 93189 [2021-11-23 03:37:32,207 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 03:37:32,209 INFO L933 BasicCegarLoop]: 4926 mSDtfsCounter, 3882 mSDsluCounter, 4363 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 8839 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:32,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3889 Valid, 8839 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 918 Invalid, 13 Unknown, 0 Unchecked, 38.7s Time] [2021-11-23 03:37:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93189 states. [2021-11-23 03:37:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93189 to 93082. [2021-11-23 03:37:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93082 states, 61591 states have (on average 1.377603870695394) internal successors, (84848), 62289 states have internal predecessors, (84848), 26341 states have call successors, (26341), 5186 states have call predecessors, (26341), 5149 states have return successors, (26474), 26116 states have call predecessors, (26474), 26340 states have call successors, (26474) [2021-11-23 03:37:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93082 states to 93082 states and 137663 transitions. [2021-11-23 03:37:36,987 INFO L78 Accepts]: Start accepts. Automaton has 93082 states and 137663 transitions. Word has length 958 [2021-11-23 03:37:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:36,988 INFO L470 AbstractCegarLoop]: Abstraction has 93082 states and 137663 transitions. [2021-11-23 03:37:36,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 3 states have call successors, (107), 2 states have call predecessors, (107), 1 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-23 03:37:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 93082 states and 137663 transitions. [2021-11-23 03:37:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2021-11-23 03:37:37,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:37,321 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:37,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:37:37,321 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1005088000, now seen corresponding path program 1 times [2021-11-23 03:37:37,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472085482] [2021-11-23 03:37:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:37,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15862 trivial. 0 not checked. [2021-11-23 03:37:39,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472085482] [2021-11-23 03:37:39,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472085482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:39,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:39,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23047630] [2021-11-23 03:37:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:39,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:39,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:39,483 INFO L87 Difference]: Start difference. First operand 93082 states and 137663 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2021-11-23 03:37:41,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:44,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:47,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:49,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:53,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:37:55,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:58,628 WARN L534 Checker$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 03:38:01,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:04,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:06,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:09,216 WARN L534 Checker$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 03:38:11,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:13,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:17,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:19,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:23,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:24,501 INFO L93 Difference]: Finished difference Result 183773 states and 271803 transitions. [2021-11-23 03:38:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 1028 [2021-11-23 03:38:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:25,754 INFO L225 Difference]: With dead ends: 183773 [2021-11-23 03:38:25,754 INFO L226 Difference]: Without dead ends: 183767 [2021-11-23 03:38:25,837 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 03:38:25,838 INFO L933 BasicCegarLoop]: 4925 mSDtfsCounter, 3925 mSDsluCounter, 4363 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 8838 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:25,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3931 Valid, 8838 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 13 Unknown, 0 Unchecked, 41.5s Time] [2021-11-23 03:38:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183767 states. [2021-11-23 03:38:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183767 to 183762. [2021-11-23 03:38:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183762 states, 121592 states have (on average 1.3776646489900652) internal successors, (167513), 122973 states have internal predecessors, (167513), 52000 states have call successors, (52000), 10242 states have call predecessors, (52000), 10169 states have return successors, (52269), 51556 states have call predecessors, (52269), 51999 states have call successors, (52269) [2021-11-23 03:38:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183762 states to 183762 states and 271782 transitions. [2021-11-23 03:38:34,395 INFO L78 Accepts]: Start accepts. Automaton has 183762 states and 271782 transitions. Word has length 1028 [2021-11-23 03:38:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:34,397 INFO L470 AbstractCegarLoop]: Abstraction has 183762 states and 271782 transitions. [2021-11-23 03:38:34,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2021-11-23 03:38:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 183762 states and 271782 transitions. [2021-11-23 03:38:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2021-11-23 03:38:35,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:35,556 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:35,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:38:35,556 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:35,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1390415296, now seen corresponding path program 1 times [2021-11-23 03:38:35,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:35,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034651863] [2021-11-23 03:38:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:35,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15924 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 15841 trivial. 0 not checked. [2021-11-23 03:38:37,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:37,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034651863] [2021-11-23 03:38:37,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034651863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:37,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835922230] [2021-11-23 03:38:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:37,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:37,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:37,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:38:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 19044 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:41,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15924 trivial. 0 not checked. [2021-11-23 03:38:51,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:38:51,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835922230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:51,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:38:51,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:38:51,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089719761] [2021-11-23 03:38:51,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:51,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:51,986 INFO L87 Difference]: Start difference. First operand 183762 states and 271782 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2021-11-23 03:38:54,192 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 03:38:56,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:59,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:01,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:05,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:39:08,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:12,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:14,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:16,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:19,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:22,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:25,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:28,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:29,733 INFO L93 Difference]: Finished difference Result 184535 states and 272784 transitions. [2021-11-23 03:39:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:39:29,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 1059 [2021-11-23 03:39:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:29,740 INFO L225 Difference]: With dead ends: 184535 [2021-11-23 03:39:29,741 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:39:30,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:30,559 INFO L933 BasicCegarLoop]: 4280 mSDtfsCounter, 3701 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 5387 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:30,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3709 Valid, 5387 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 620 Invalid, 12 Unknown, 0 Unchecked, 34.3s Time] [2021-11-23 03:39:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:39:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:39:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:39:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:39:30,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1059 [2021-11-23 03:39:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:30,589 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:39:30,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2021-11-23 03:39:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:39:30,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:39:30,592 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:39:30,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:39:30,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9f442e8-7445-4069-87f3-7cad131d85b2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 03:39:30,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.