./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:31:58,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:31:58,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:31:58,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:31:58,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:31:58,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:31:58,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:31:59,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:31:59,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:31:59,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:31:59,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:31:59,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:31:59,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:31:59,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:31:59,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:31:59,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:31:59,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:31:59,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:31:59,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:31:59,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:31:59,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:31:59,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:31:59,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:31:59,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:31:59,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:31:59,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:31:59,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:31:59,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:31:59,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:31:59,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:31:59,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:31:59,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:31:59,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:31:59,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:31:59,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:31:59,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:31:59,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:31:59,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:31:59,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:31:59,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:31:59,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:31:59,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:31:59,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:31:59,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:31:59,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:31:59,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:31:59,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:31:59,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:31:59,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:31:59,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:31:59,120 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:31:59,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:31:59,121 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:31:59,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:31:59,122 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:31:59,122 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:31:59,123 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:31:59,123 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:31:59,123 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:31:59,123 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:31:59,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:31:59,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:31:59,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:31:59,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:31:59,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:31:59,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:31:59,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:31:59,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:31:59,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:31:59,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:31:59,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:31:59,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:31:59,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:31:59,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:31:59,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:31:59,130 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:31:59,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:31:59,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:31:59,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:31:59,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:31:59,131 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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-23 02:31:59,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:31:59,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:31:59,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:31:59,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:31:59,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:31:59,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-23 02:31:59,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/data/982893636/4b04ef446cd443c08e04a54c9def1f46/FLAGd0704fcd2 [2021-11-23 02:32:00,526 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:32:00,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-23 02:32:00,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/data/982893636/4b04ef446cd443c08e04a54c9def1f46/FLAGd0704fcd2 [2021-11-23 02:32:00,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/data/982893636/4b04ef446cd443c08e04a54c9def1f46 [2021-11-23 02:32:00,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:32:00,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:32:00,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:00,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:32:00,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:32:00,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:00" (1/1) ... [2021-11-23 02:32:00,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec1655c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:00, skipping insertion in model container [2021-11-23 02:32:00,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:32:00" (1/1) ... [2021-11-23 02:32:00,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:32:01,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:32:02,296 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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-23 02:32:03,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:03,542 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:32:03,733 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_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-23 02:32:04,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:32:04,249 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:32:04,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04 WrapperNode [2021-11-23 02:32:04,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:32:04,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:04,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:32:04,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:32:04,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,691 INFO L137 Inliner]: procedures = 310, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4697 [2021-11-23 02:32:04,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:32:04,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:32:04,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:32:04,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:32:04,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:04,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:05,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:05,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:32:05,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:32:05,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:32:05,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:32:05,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (1/1) ... [2021-11-23 02:32:05,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:32:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:05,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:32:05,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:32:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:32:05,184 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:32:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-23 02:32:05,184 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-23 02:32:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:32:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:32:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:32:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:32:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2021-11-23 02:32:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2021-11-23 02:32:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:32:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:32:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-23 02:32:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-23 02:32:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:32:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:32:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:32:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:32:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2021-11-23 02:32:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2021-11-23 02:32:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:32:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2021-11-23 02:32:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2021-11-23 02:32:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-23 02:32:05,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-23 02:32:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:32:05,188 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:32:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2021-11-23 02:32:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2021-11-23 02:32:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:32:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:32:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:32:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:32:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:32:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:32:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:32:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:32:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:32:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:32:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2021-11-23 02:32:05,191 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2021-11-23 02:32:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:32:05,191 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:32:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2021-11-23 02:32:05,191 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2021-11-23 02:32:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:32:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2021-11-23 02:32:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2021-11-23 02:32:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 02:32:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 02:32:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:32:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:32:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-23 02:32:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-23 02:32:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:32:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:32:05,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:32:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:32:05,194 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:32:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 02:32:05,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 02:32:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:32:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:32:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-23 02:32:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2021-11-23 02:32:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2021-11-23 02:32:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:32:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:32:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:32:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:32:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 02:32:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 02:32:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:32:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:32:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:32:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 02:32:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 02:32:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:32:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:32:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:32:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:32:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:32:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:32:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:32:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:32:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:32:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:32:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:32:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:32:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:32:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:32:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:32:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2021-11-23 02:32:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2021-11-23 02:32:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-23 02:32:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-23 02:32:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2021-11-23 02:32:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2021-11-23 02:32:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:32:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:32:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:32:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:32:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:32:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:32:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:32:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-23 02:32:05,203 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-23 02:32:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:32:05,203 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:32:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:32:05,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:32:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:32:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:32:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:32:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:32:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:32:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-23 02:32:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-23 02:32:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:32:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:32:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2021-11-23 02:32:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2021-11-23 02:32:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:32:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:32:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:32:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 02:32:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 02:32:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2021-11-23 02:32:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2021-11-23 02:32:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:32:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 02:32:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 02:32:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2021-11-23 02:32:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2021-11-23 02:32:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:32:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:32:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:32:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:32:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:32:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:32:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:32:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:32:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 02:32:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 02:32:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2021-11-23 02:32:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2021-11-23 02:32:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2021-11-23 02:32:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2021-11-23 02:32:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2021-11-23 02:32:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2021-11-23 02:32:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2021-11-23 02:32:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2021-11-23 02:32:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:32:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:32:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-23 02:32:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-23 02:32:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:32:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:32:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2021-11-23 02:32:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2021-11-23 02:32:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 02:32:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 02:32:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:32:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:32:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:32:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2021-11-23 02:32:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2021-11-23 02:32:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 02:32:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 02:32:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2021-11-23 02:32:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2021-11-23 02:32:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:32:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:32:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:32:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:32:05,964 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:32:05,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:32:06,190 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:32:09,941 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:32:11,191 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:32:11,191 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:32:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:11 BoogieIcfgContainer [2021-11-23 02:32:11,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:32:11,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:32:11,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:32:11,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:32:11,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:32:00" (1/3) ... [2021-11-23 02:32:11,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78506dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:11, skipping insertion in model container [2021-11-23 02:32:11,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:32:04" (2/3) ... [2021-11-23 02:32:11,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78506dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:32:11, skipping insertion in model container [2021-11-23 02:32:11,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:32:11" (3/3) ... [2021-11-23 02:32:11,206 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-23 02:32:11,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:32:11,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:32:11,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:32:11,290 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 02:32:11,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:32:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 1223 states, 729 states have (on average 1.3237311385459534) internal successors, (965), 756 states have internal predecessors, (965), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-23 02:32:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:32:11,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:11,370 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:11,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1331406220, now seen corresponding path program 1 times [2021-11-23 02:32:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:11,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415263252] [2021-11-23 02:32:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:11,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-23 02:32:12,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:12,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415263252] [2021-11-23 02:32:12,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415263252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:12,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:12,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:12,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276916038] [2021-11-23 02:32:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:12,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:12,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:12,126 INFO L87 Difference]: Start difference. First operand has 1223 states, 729 states have (on average 1.3237311385459534) internal successors, (965), 756 states have internal predecessors, (965), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 02:32:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:14,796 INFO L93 Difference]: Finished difference Result 3607 states and 5284 transitions. [2021-11-23 02:32:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 73 [2021-11-23 02:32:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:14,836 INFO L225 Difference]: With dead ends: 3607 [2021-11-23 02:32:14,836 INFO L226 Difference]: Without dead ends: 2336 [2021-11-23 02:32:14,849 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 02:32:14,853 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 1723 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:14,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 3579 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:32:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2021-11-23 02:32:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2021-11-23 02:32:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1382 states have (on average 1.2858176555716354) internal successors, (1777), 1418 states have internal predecessors, (1777), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-23 02:32:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3378 transitions. [2021-11-23 02:32:15,125 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3378 transitions. Word has length 73 [2021-11-23 02:32:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:15,126 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 3378 transitions. [2021-11-23 02:32:15,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 02:32:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3378 transitions. [2021-11-23 02:32:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:32:15,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:15,133 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:32:15,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash -823056911, now seen corresponding path program 1 times [2021-11-23 02:32:15,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510189126] [2021-11-23 02:32:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:15,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-23 02:32:15,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:15,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510189126] [2021-11-23 02:32:15,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510189126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:15,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:15,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:32:15,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714182238] [2021-11-23 02:32:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:15,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:32:15,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:32:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:15,409 INFO L87 Difference]: Start difference. First operand 2336 states and 3378 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 02:32:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:17,579 INFO L93 Difference]: Finished difference Result 4650 states and 6731 transitions. [2021-11-23 02:32:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:32:17,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2021-11-23 02:32:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:17,618 INFO L225 Difference]: With dead ends: 4650 [2021-11-23 02:32:17,618 INFO L226 Difference]: Without dead ends: 4645 [2021-11-23 02:32:17,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:17,623 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 1699 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:17,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 5389 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:32:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2021-11-23 02:32:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4643. [2021-11-23 02:32:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 2747 states have (on average 1.286130323989807) internal successors, (3533), 2819 states have internal predecessors, (3533), 1591 states have call successors, (1591), 305 states have call predecessors, (1591), 304 states have return successors, (1598), 1578 states have call predecessors, (1598), 1590 states have call successors, (1598) [2021-11-23 02:32:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6722 transitions. [2021-11-23 02:32:17,915 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6722 transitions. Word has length 76 [2021-11-23 02:32:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:17,918 INFO L470 AbstractCegarLoop]: Abstraction has 4643 states and 6722 transitions. [2021-11-23 02:32:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 02:32:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6722 transitions. [2021-11-23 02:32:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-23 02:32:17,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:17,957 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 10, 7, 4, 4, 4, 4, 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] [2021-11-23 02:32:17,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:32:17,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1147136686, now seen corresponding path program 1 times [2021-11-23 02:32:17,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071731890] [2021-11-23 02:32:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:17,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:18,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071731890] [2021-11-23 02:32:18,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:18,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103626620] [2021-11-23 02:32:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:18,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:18,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:18,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:18,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:32:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 3909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:32:19,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-11-23 02:32:20,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:20,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103626620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:20,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:20,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:20,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107641585] [2021-11-23 02:32:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:20,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:20,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:20,405 INFO L87 Difference]: Start difference. First operand 4643 states and 6722 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-23 02:32:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:22,238 INFO L93 Difference]: Finished difference Result 13005 states and 18830 transitions. [2021-11-23 02:32:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 358 [2021-11-23 02:32:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:22,308 INFO L225 Difference]: With dead ends: 13005 [2021-11-23 02:32:22,308 INFO L226 Difference]: Without dead ends: 8384 [2021-11-23 02:32:22,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 356 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 02:32:22,340 INFO L933 BasicCegarLoop]: 1818 mSDtfsCounter, 1387 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:22,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3221 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:32:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2021-11-23 02:32:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8355. [2021-11-23 02:32:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 4979 states have (on average 1.287407109861418) internal successors, (6410), 5139 states have internal predecessors, (6410), 2799 states have call successors, (2799), 577 states have call predecessors, (2799), 576 states have return successors, (2820), 2754 states have call predecessors, (2820), 2798 states have call successors, (2820) [2021-11-23 02:32:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 12029 transitions. [2021-11-23 02:32:23,060 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 12029 transitions. Word has length 358 [2021-11-23 02:32:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:23,062 INFO L470 AbstractCegarLoop]: Abstraction has 8355 states and 12029 transitions. [2021-11-23 02:32:23,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-23 02:32:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 12029 transitions. [2021-11-23 02:32:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-11-23 02:32:23,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:23,100 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 10, 7, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:23,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:23,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:23,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1758715457, now seen corresponding path program 1 times [2021-11-23 02:32:23,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:23,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413246606] [2021-11-23 02:32:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:23,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:23,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:23,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413246606] [2021-11-23 02:32:23,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961656288] [2021-11-23 02:32:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:23,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:23,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:32:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:24,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 4146 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:32:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-11-23 02:32:25,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:25,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961656288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:25,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:25,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:25,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995932752] [2021-11-23 02:32:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:25,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:25,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:25,613 INFO L87 Difference]: Start difference. First operand 8355 states and 12029 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-23 02:32:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:27,598 INFO L93 Difference]: Finished difference Result 21687 states and 31254 transitions. [2021-11-23 02:32:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 391 [2021-11-23 02:32:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:27,727 INFO L225 Difference]: With dead ends: 21687 [2021-11-23 02:32:27,727 INFO L226 Difference]: Without dead ends: 13354 [2021-11-23 02:32:27,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 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 02:32:27,776 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 1373 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:27,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 3843 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:32:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13354 states. [2021-11-23 02:32:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13354 to 13349. [2021-11-23 02:32:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 8113 states have (on average 1.29927277209417) internal successors, (10541), 8329 states have internal predecessors, (10541), 4323 states have call successors, (4323), 913 states have call predecessors, (4323), 912 states have return successors, (4350), 4266 states have call predecessors, (4350), 4322 states have call successors, (4350) [2021-11-23 02:32:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 19214 transitions. [2021-11-23 02:32:28,724 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 19214 transitions. Word has length 391 [2021-11-23 02:32:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:28,725 INFO L470 AbstractCegarLoop]: Abstraction has 13349 states and 19214 transitions. [2021-11-23 02:32:28,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2021-11-23 02:32:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 19214 transitions. [2021-11-23 02:32:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-23 02:32:28,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:28,772 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:32:28,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:28,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:28,998 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1655344426, now seen corresponding path program 1 times [2021-11-23 02:32:28,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148902443] [2021-11-23 02:32:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:28,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:29,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:29,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148902443] [2021-11-23 02:32:29,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:29,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940400158] [2021-11-23 02:32:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:29,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:29,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:29,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:29,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:32:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 4311 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:32:30,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2021-11-23 02:32:31,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:31,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940400158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:31,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:31,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:31,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561751601] [2021-11-23 02:32:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:31,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:31,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:31,037 INFO L87 Difference]: Start difference. First operand 13349 states and 19214 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-11-23 02:32:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:33,442 INFO L93 Difference]: Finished difference Result 31939 states and 45892 transitions. [2021-11-23 02:32:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 422 [2021-11-23 02:32:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:33,542 INFO L225 Difference]: With dead ends: 31939 [2021-11-23 02:32:33,542 INFO L226 Difference]: Without dead ends: 18628 [2021-11-23 02:32:33,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 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 02:32:33,607 INFO L933 BasicCegarLoop]: 2361 mSDtfsCounter, 1544 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:33,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 3704 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 02:32:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18628 states. [2021-11-23 02:32:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18628 to 18579. [2021-11-23 02:32:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18579 states, 11363 states have (on average 1.302912963125935) internal successors, (14805), 11631 states have internal predecessors, (14805), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2021-11-23 02:32:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18579 states to 18579 states and 26648 transitions. [2021-11-23 02:32:34,997 INFO L78 Accepts]: Start accepts. Automaton has 18579 states and 26648 transitions. Word has length 422 [2021-11-23 02:32:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:34,998 INFO L470 AbstractCegarLoop]: Abstraction has 18579 states and 26648 transitions. [2021-11-23 02:32:34,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2021-11-23 02:32:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 18579 states and 26648 transitions. [2021-11-23 02:32:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-23 02:32:35,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:35,067 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:35,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:35,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:35,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -73399705, now seen corresponding path program 1 times [2021-11-23 02:32:35,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:35,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067504119] [2021-11-23 02:32:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:35,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:35,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:35,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067504119] [2021-11-23 02:32:35,802 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:35,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309814772] [2021-11-23 02:32:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:35,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:35,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:35,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:32:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:36,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 4419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:32:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-11-23 02:32:37,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:37,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309814772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:37,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:37,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:37,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645987756] [2021-11-23 02:32:37,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:37,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:37,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:37,775 INFO L87 Difference]: Start difference. First operand 18579 states and 26648 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, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:39,996 INFO L93 Difference]: Finished difference Result 38384 states and 55282 transitions. [2021-11-23 02:32:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:39,997 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, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 442 [2021-11-23 02:32:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:40,112 INFO L225 Difference]: With dead ends: 38384 [2021-11-23 02:32:40,112 INFO L226 Difference]: Without dead ends: 19843 [2021-11-23 02:32:40,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 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 02:32:40,318 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 51 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:40,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 3136 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:32:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2021-11-23 02:32:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 18611. [2021-11-23 02:32:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18611 states, 11395 states have (on average 1.3020623080298377) internal successors, (14837), 11663 states have internal predecessors, (14837), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2021-11-23 02:32:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18611 states to 18611 states and 26680 transitions. [2021-11-23 02:32:41,559 INFO L78 Accepts]: Start accepts. Automaton has 18611 states and 26680 transitions. Word has length 442 [2021-11-23 02:32:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:41,569 INFO L470 AbstractCegarLoop]: Abstraction has 18611 states and 26680 transitions. [2021-11-23 02:32:41,570 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, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18611 states and 26680 transitions. [2021-11-23 02:32:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-23 02:32:41,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:41,642 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:41,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:41,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:41,866 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 38133282, now seen corresponding path program 1 times [2021-11-23 02:32:41,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:41,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740586528] [2021-11-23 02:32:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:41,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:42,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:42,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740586528] [2021-11-23 02:32:42,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:42,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048483479] [2021-11-23 02:32:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:42,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:42,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:42,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:42,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:32:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:43,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 4432 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:43,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2021-11-23 02:32:44,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:44,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048483479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:44,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:44,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:32:44,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072064162] [2021-11-23 02:32:44,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:44,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:32:44,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:32:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:44,231 INFO L87 Difference]: Start difference. First operand 18611 states and 26680 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:46,963 INFO L93 Difference]: Finished difference Result 39440 states and 56866 transitions. [2021-11-23 02:32:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:32:46,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 443 [2021-11-23 02:32:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:47,082 INFO L225 Difference]: With dead ends: 39440 [2021-11-23 02:32:47,083 INFO L226 Difference]: Without dead ends: 20867 [2021-11-23 02:32:47,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:47,145 INFO L933 BasicCegarLoop]: 1584 mSDtfsCounter, 103 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:47,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 4689 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:32:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20867 states. [2021-11-23 02:32:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20867 to 18643. [2021-11-23 02:32:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18643 states, 11427 states have (on average 1.3012164172573728) internal successors, (14869), 11679 states have internal predecessors, (14869), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2021-11-23 02:32:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 26712 transitions. [2021-11-23 02:32:48,325 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 26712 transitions. Word has length 443 [2021-11-23 02:32:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 18643 states and 26712 transitions. [2021-11-23 02:32:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 26712 transitions. [2021-11-23 02:32:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-23 02:32:48,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:48,375 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:48,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:48,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:48,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1293430768, now seen corresponding path program 1 times [2021-11-23 02:32:48,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:48,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964034934] [2021-11-23 02:32:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:48,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:49,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:49,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964034934] [2021-11-23 02:32:49,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:49,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144215624] [2021-11-23 02:32:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:49,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:49,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:49,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:49,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:32:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:50,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 4434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:50,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-23 02:32:50,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:50,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144215624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:50,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:50,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:32:50,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221934887] [2021-11-23 02:32:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:50,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:32:50,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:32:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:32:50,710 INFO L87 Difference]: Start difference. First operand 18643 states and 26712 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:52,957 INFO L93 Difference]: Finished difference Result 37424 states and 53646 transitions. [2021-11-23 02:32:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:32:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 444 [2021-11-23 02:32:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:53,136 INFO L225 Difference]: With dead ends: 37424 [2021-11-23 02:32:53,136 INFO L226 Difference]: Without dead ends: 18819 [2021-11-23 02:32:53,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:53,183 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 9 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:53,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 4570 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 02:32:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2021-11-23 02:32:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 18731. [2021-11-23 02:32:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18731 states, 11491 states have (on average 1.2995387694717606) internal successors, (14933), 11751 states have internal predecessors, (14933), 5921 states have call successors, (5921), 1311 states have call predecessors, (5921), 1318 states have return successors, (5964), 5852 states have call predecessors, (5964), 5920 states have call successors, (5964) [2021-11-23 02:32:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18731 states to 18731 states and 26818 transitions. [2021-11-23 02:32:54,243 INFO L78 Accepts]: Start accepts. Automaton has 18731 states and 26818 transitions. Word has length 444 [2021-11-23 02:32:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:54,245 INFO L470 AbstractCegarLoop]: Abstraction has 18731 states and 26818 transitions. [2021-11-23 02:32:54,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2021-11-23 02:32:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18731 states and 26818 transitions. [2021-11-23 02:32:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-23 02:32:54,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:54,283 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 11, 8, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:54,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:54,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:54,506 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash 715385339, now seen corresponding path program 1 times [2021-11-23 02:32:54,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:54,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312866551] [2021-11-23 02:32:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:54,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:54,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312866551] [2021-11-23 02:32:54,774 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:54,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815525865] [2021-11-23 02:32:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:54,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:54,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:54,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:32:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:56,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 4517 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:32:56,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-23 02:32:56,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:56,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815525865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:56,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:56,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:56,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235660384] [2021-11-23 02:32:56,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:56,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:56,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:56,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:56,616 INFO L87 Difference]: Start difference. First operand 18731 states and 26818 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-23 02:32:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:58,156 INFO L93 Difference]: Finished difference Result 37440 states and 53648 transitions. [2021-11-23 02:32:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:58,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 457 [2021-11-23 02:32:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:58,248 INFO L225 Difference]: With dead ends: 37440 [2021-11-23 02:32:58,248 INFO L226 Difference]: Without dead ends: 18747 [2021-11-23 02:32:58,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 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 02:32:58,314 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:58,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3047 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:32:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18747 states. [2021-11-23 02:32:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18747 to 18747. [2021-11-23 02:32:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18747 states, 11507 states have (on average 1.2991222733988008) internal successors, (14949), 11767 states have internal predecessors, (14949), 5921 states have call successors, (5921), 1311 states have call predecessors, (5921), 1318 states have return successors, (5964), 5852 states have call predecessors, (5964), 5920 states have call successors, (5964) [2021-11-23 02:32:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18747 states to 18747 states and 26834 transitions. [2021-11-23 02:32:59,422 INFO L78 Accepts]: Start accepts. Automaton has 18747 states and 26834 transitions. Word has length 457 [2021-11-23 02:32:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:59,423 INFO L470 AbstractCegarLoop]: Abstraction has 18747 states and 26834 transitions. [2021-11-23 02:32:59,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-23 02:32:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 18747 states and 26834 transitions. [2021-11-23 02:32:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-23 02:32:59,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:59,580 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 11, 8, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:32:59,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:59,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1863273565, now seen corresponding path program 1 times [2021-11-23 02:32:59,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:59,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015020995] [2021-11-23 02:32:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:59,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:00,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:00,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015020995] [2021-11-23 02:33:00,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:33:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923160444] [2021-11-23 02:33:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:00,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:00,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:00,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b306f64-4dd0-4e0a-836f-a7a04f382ed8/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:33:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:01,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4532 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:33:01,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 164 proven. 1 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2021-11-23 02:33:01,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2021-11-23 02:33:02,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923160444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956429624] [2021-11-23 02:33:02,821 INFO L159 IcfgInterpreter]: Started Sifa with 281 locations of interest [2021-11-23 02:33:02,821 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:02,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:02,833 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:02,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:06,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1271 treesize of output 1003 [2021-11-23 02:33:07,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:07,512 INFO L244 Elim1Store]: Index analysis took 264 ms [2021-11-23 02:33:30,211 WARN L227 SmtUtils]: Spent 22.64s on a formula simplification. DAG size of input: 1853 DAG size of output: 1011 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:33:30,215 INFO L354 Elim1Store]: treesize reduction 3024, result has 33.3 percent of original size [2021-11-23 02:33:30,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 171 select indices, 171 select index equivalence classes, 14367 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 336 case distinctions, treesize of input 862 treesize of output 2041 [2021-11-23 02:33:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:31,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 169 select indices, 169 select index equivalence classes, 14366 disjoint index pairs (out of 14196 index pairs), introduced 169 new quantified variables, introduced 0 case distinctions, treesize of input 852 treesize of output 1358 [2021-11-23 02:33:32,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1271 treesize of output 1003 [2021-11-23 02:33:40,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:40,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 170 select indices, 170 select index equivalence classes, 14366 disjoint index pairs (out of 14365 index pairs), introduced 170 new quantified variables, introduced 0 case distinctions, treesize of input 851 treesize of output 511 [2021-11-23 02:33:40,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:40,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 171 select indices, 171 select index equivalence classes, 14535 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 856 treesize of output 514 [2021-11-23 02:33:41,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:41,417 INFO L244 Elim1Store]: Index analysis took 177 ms [2021-11-23 02:33:41,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 131 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 106 [2021-11-23 02:33:47,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 170 select indices, 170 select index equivalence classes, 14366 disjoint index pairs (out of 14365 index pairs), introduced 170 new quantified variables, introduced 0 case distinctions, treesize of input 851 treesize of output 511 [2021-11-23 02:33:48,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 171 select indices, 171 select index equivalence classes, 14535 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 856 treesize of output 514 [2021-11-23 02:33:48,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:49,027 INFO L244 Elim1Store]: Index analysis took 136 ms [2021-11-23 02:33:49,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 131 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 106 [2021-11-23 02:35:00,427 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 2394 for LOIs [2021-11-23 02:35:16,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:27,856 WARN L227 SmtUtils]: Spent 3.19m on a formula simplification. DAG size of input: 2249 DAG size of output: 1911 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:19,904 WARN L227 SmtUtils]: Spent 40.96s on a formula simplification. DAG size of input: 1464 DAG size of output: 1461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:41,519 WARN L227 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 1468 DAG size of output: 1465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:43,721 WARN L227 SmtUtils]: Spent 3.03m on a formula simplification. DAG size of input: 1476 DAG size of output: 1470 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)