./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.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_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/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_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/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_f8c61ae0-254b-4fbe-b566-da6717550401/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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:43:35,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:43:35,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:43:35,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:43:35,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:43:35,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:43:35,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:43:35,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:43:35,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:43:35,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:43:35,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:43:35,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:43:35,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:43:35,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:43:35,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:43:35,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:43:35,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:43:35,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:43:35,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:43:35,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:43:35,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:43:35,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:43:35,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:43:35,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:43:35,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:43:35,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:43:35,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:43:35,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:43:35,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:43:35,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:43:35,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:43:35,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:43:35,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:43:35,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:43:35,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:43:35,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:43:35,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:43:35,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:43:35,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:43:35,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:43:35,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:43:35,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:43:35,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:43:35,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:43:35,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:43:35,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:43:35,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:43:35,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:43:35,783 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:43:35,783 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:43:35,783 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:43:35,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:43:35,785 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:43:35,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:43:35,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:43:35,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:43:35,786 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:43:35,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:43:35,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:43:35,786 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:43:35,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:43:35,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:43:35,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:43:35,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:43:35,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:43:35,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:43:35,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:43:35,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:43:35,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:43:35,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:43:35,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:43:35,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:35,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:43:35,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:43:35,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:43:35,792 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:43:35,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:43:35,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:43:35,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:43:35,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:43:35,793 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_f8c61ae0-254b-4fbe-b566-da6717550401/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-11-23 03:43:36,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:43:36,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:43:36,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:43:36,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:43:36,137 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:43:36,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 03:43:36,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/data/25f845303/718a3b96e3934815ad38d95a07c4ce3b/FLAGa157df5c3 [2021-11-23 03:43:37,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:43:37,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 03:43:37,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/data/25f845303/718a3b96e3934815ad38d95a07c4ce3b/FLAGa157df5c3 [2021-11-23 03:43:37,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/data/25f845303/718a3b96e3934815ad38d95a07c4ce3b [2021-11-23 03:43:37,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:43:37,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:43:37,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:37,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:43:37,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:43:37,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:37" (1/1) ... [2021-11-23 03:43:37,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a10534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:37, skipping insertion in model container [2021-11-23 03:43:37,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:37" (1/1) ... [2021-11-23 03:43:37,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:43:37,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:43:39,086 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_f8c61ae0-254b-4fbe-b566-da6717550401/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-23 03:43:40,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:40,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:43:40,606 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_f8c61ae0-254b-4fbe-b566-da6717550401/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-23 03:43:41,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:41,271 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:43:41,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41 WrapperNode [2021-11-23 03:43:41,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:41,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:41,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:43:41,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:43:41,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,668 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2021-11-23 03:43:41,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:41,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:43:41,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:43:41,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:43:41,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:41,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:42,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:43:42,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:43:42,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:43:42,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:43:42,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (1/1) ... [2021-11-23 03:43:42,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:42,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:42,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:43:42,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8c61ae0-254b-4fbe-b566-da6717550401/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:43:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-11-23 03:43:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-11-23 03:43:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-11-23 03:43:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-11-23 03:43:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-11-23 03:43:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-11-23 03:43:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-23 03:43:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-23 03:43:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 03:43:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 03:43:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2021-11-23 03:43:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2021-11-23 03:43:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-11-23 03:43:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-11-23 03:43:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:43:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:43:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-23 03:43:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-23 03:43:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-23 03:43:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-23 03:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-23 03:43:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-23 03:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-11-23 03:43:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-11-23 03:43:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-23 03:43:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-23 03:43:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-23 03:43:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-23 03:43:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 03:43:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 03:43:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 03:43:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 03:43:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-23 03:43:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-23 03:43:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:43:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:43:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-23 03:43:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-23 03:43:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-23 03:43:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-23 03:43:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-11-23 03:43:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-11-23 03:43:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-11-23 03:43:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-11-23 03:43:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-23 03:43:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-23 03:43:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-11-23 03:43:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-11-23 03:43:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:43:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:43:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:43:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:43:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-23 03:43:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-23 03:43:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-23 03:43:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-23 03:43:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-11-23 03:43:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-11-23 03:43:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-23 03:43:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-23 03:43:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-11-23 03:43:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-11-23 03:43:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:43:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:43:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:43:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:43:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-11-23 03:43:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-11-23 03:43:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-11-23 03:43:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-11-23 03:43:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-23 03:43:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-23 03:43:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-23 03:43:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-23 03:43:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-11-23 03:43:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-11-23 03:43:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2021-11-23 03:43:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2021-11-23 03:43:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-11-23 03:43:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-11-23 03:43:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 03:43:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 03:43:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:43:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:43:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:43:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:43:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:43:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-23 03:43:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-23 03:43:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-11-23 03:43:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-11-23 03:43:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-11-23 03:43:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-11-23 03:43:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-23 03:43:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-23 03:43:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-23 03:43:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-23 03:43:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:43:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 03:43:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-23 03:43:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-23 03:43:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-23 03:43:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-23 03:43:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-23 03:43:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-23 03:43:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:43:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:43:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-11-23 03:43:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-11-23 03:43:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-11-23 03:43:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-11-23 03:43:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:43:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:43:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-11-23 03:43:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-11-23 03:43:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-23 03:43:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-23 03:43:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:43:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:43:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-11-23 03:43:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-11-23 03:43:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-23 03:43:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-23 03:43:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:43:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:43:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:43:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:43:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:43:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:43:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-23 03:43:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-23 03:43:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-11-23 03:43:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-11-23 03:43:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-11-23 03:43:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-11-23 03:43:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:43:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:43:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-23 03:43:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-23 03:43:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-11-23 03:43:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-11-23 03:43:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:43:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:43:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-23 03:43:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-23 03:43:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:43:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:43:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-23 03:43:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-23 03:43:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-11-23 03:43:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-11-23 03:43:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-23 03:43:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-23 03:43:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-23 03:43:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-23 03:43:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-11-23 03:43:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-11-23 03:43:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:43:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-11-23 03:43:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-11-23 03:43:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-23 03:43:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-23 03:43:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-23 03:43:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-23 03:43:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 03:43:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 03:43:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-11-23 03:43:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-11-23 03:43:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-11-23 03:43:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-11-23 03:43:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:43:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:43:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 03:43:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 03:43:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-23 03:43:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-23 03:43:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-23 03:43:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-23 03:43:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:43:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:43:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-11-23 03:43:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-11-23 03:43:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-11-23 03:43:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-11-23 03:43:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 03:43:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 03:43:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:43:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-11-23 03:43:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-11-23 03:43:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-23 03:43:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-23 03:43:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-23 03:43:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-23 03:43:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:43:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:43:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-23 03:43:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-23 03:43:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-11-23 03:43:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-11-23 03:43:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-11-23 03:43:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-11-23 03:43:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:43:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-11-23 03:43:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-11-23 03:43:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:43:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:43:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:43:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:43:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:43:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2021-11-23 03:43:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2021-11-23 03:43:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-11-23 03:43:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-11-23 03:43:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:43:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:43:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:43:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:43:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-23 03:43:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-23 03:43:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 03:43:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 03:43:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-11-23 03:43:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-11-23 03:43:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2021-11-23 03:43:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2021-11-23 03:43:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-23 03:43:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-23 03:43:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-11-23 03:43:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-11-23 03:43:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-23 03:43:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-23 03:43:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-23 03:43:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-23 03:43:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:43:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:43:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-23 03:43:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-23 03:43:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:43:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:43:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-11-23 03:43:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-11-23 03:43:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:43:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:43:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-23 03:43:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-23 03:43:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:43:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:43:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:43:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-11-23 03:43:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-11-23 03:43:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-11-23 03:43:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-11-23 03:43:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:43:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:43:43,235 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:43:43,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:43:43,750 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:43:44,581 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2021-11-23 03:43:52,285 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:43:53,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:43:53,465 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:43:53,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:53 BoogieIcfgContainer [2021-11-23 03:43:53,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:43:53,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:43:53,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:43:53,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:43:53,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:37" (1/3) ... [2021-11-23 03:43:53,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f20922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:53, skipping insertion in model container [2021-11-23 03:43:53,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:41" (2/3) ... [2021-11-23 03:43:53,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f20922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:53, skipping insertion in model container [2021-11-23 03:43:53,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:53" (3/3) ... [2021-11-23 03:43:53,480 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 03:43:53,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:43:53,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:43:53,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:43:53,581 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:43:53,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:43:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2021-11-23 03:43:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:43:53,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:53,674 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:53,675 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 957623129, now seen corresponding path program 1 times [2021-11-23 03:43:53,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:53,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123562841] [2021-11-23 03:43:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:53,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:43:54,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:54,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123562841] [2021-11-23 03:43:54,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123562841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:54,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:54,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066826402] [2021-11-23 03:43:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:54,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:54,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:54,514 INFO L87 Difference]: Start difference. First operand has 1613 states, 1026 states have (on average 1.361598440545809) internal successors, (1397), 1067 states have internal predecessors, (1397), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 03:43:57,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:01,143 INFO L93 Difference]: Finished difference Result 4729 states and 6997 transitions. [2021-11-23 03:44:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2021-11-23 03:44:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:01,204 INFO L225 Difference]: With dead ends: 4729 [2021-11-23 03:44:01,205 INFO L226 Difference]: Without dead ends: 3101 [2021-11-23 03:44:01,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:01,233 INFO L933 BasicCegarLoop]: 2722 mSDtfsCounter, 2173 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 4732 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:01,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2173 Valid, 4732 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:44:01,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2021-11-23 03:44:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3098. [2021-11-23 03:44:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 1997 states have (on average 1.3485227841762644) internal successors, (2693), 2039 states have internal predecessors, (2693), 867 states have call successors, (867), 234 states have call predecessors, (867), 233 states have return successors, (860), 838 states have call predecessors, (860), 860 states have call successors, (860) [2021-11-23 03:44:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4420 transitions. [2021-11-23 03:44:01,568 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4420 transitions. Word has length 65 [2021-11-23 03:44:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:01,570 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 4420 transitions. [2021-11-23 03:44:01,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 03:44:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4420 transitions. [2021-11-23 03:44:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:44:01,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:01,588 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:01,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:44:01,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash -227593121, now seen corresponding path program 1 times [2021-11-23 03:44:01,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:01,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336347153] [2021-11-23 03:44:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:01,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:44:02,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:02,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336347153] [2021-11-23 03:44:02,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336347153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:02,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:02,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:02,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840321153] [2021-11-23 03:44:02,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:02,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:02,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:02,076 INFO L87 Difference]: Start difference. First operand 3098 states and 4420 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:44:04,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:07,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:09,106 INFO L93 Difference]: Finished difference Result 9168 states and 13211 transitions. [2021-11-23 03:44:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2021-11-23 03:44:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:09,172 INFO L225 Difference]: With dead ends: 9168 [2021-11-23 03:44:09,172 INFO L226 Difference]: Without dead ends: 6088 [2021-11-23 03:44:09,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:09,193 INFO L933 BasicCegarLoop]: 2782 mSDtfsCounter, 2218 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:09,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 4758 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:44:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2021-11-23 03:44:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 6062. [2021-11-23 03:44:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6062 states, 3906 states have (on average 1.3461341525857655) internal successors, (5258), 3985 states have internal predecessors, (5258), 1691 states have call successors, (1691), 465 states have call predecessors, (1691), 464 states have return successors, (1838), 1639 states have call predecessors, (1838), 1684 states have call successors, (1838) [2021-11-23 03:44:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8787 transitions. [2021-11-23 03:44:09,544 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8787 transitions. Word has length 83 [2021-11-23 03:44:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:09,546 INFO L470 AbstractCegarLoop]: Abstraction has 6062 states and 8787 transitions. [2021-11-23 03:44:09,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:44:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8787 transitions. [2021-11-23 03:44:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:44:09,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:09,552 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:44:09,553 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -921499869, now seen corresponding path program 1 times [2021-11-23 03:44:09,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470430247] [2021-11-23 03:44:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:09,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:44:09,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:09,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470430247] [2021-11-23 03:44:09,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470430247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:09,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:09,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:09,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026895708] [2021-11-23 03:44:09,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:09,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:09,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:09,833 INFO L87 Difference]: Start difference. First operand 6062 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:44:12,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:15,785 INFO L93 Difference]: Finished difference Result 17388 states and 25098 transitions. [2021-11-23 03:44:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2021-11-23 03:44:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:15,904 INFO L225 Difference]: With dead ends: 17388 [2021-11-23 03:44:15,904 INFO L226 Difference]: Without dead ends: 11344 [2021-11-23 03:44:15,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:15,963 INFO L933 BasicCegarLoop]: 2678 mSDtfsCounter, 1979 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:15,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 4554 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 03:44:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11344 states. [2021-11-23 03:44:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11344 to 11294. [2021-11-23 03:44:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11294 states, 7254 states have (on average 1.3377446925834022) internal successors, (9704), 7403 states have internal predecessors, (9704), 3153 states have call successors, (3153), 887 states have call predecessors, (3153), 886 states have return successors, (3422), 3057 states have call predecessors, (3422), 3146 states have call successors, (3422) [2021-11-23 03:44:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11294 states to 11294 states and 16279 transitions. [2021-11-23 03:44:16,718 INFO L78 Accepts]: Start accepts. Automaton has 11294 states and 16279 transitions. Word has length 81 [2021-11-23 03:44:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:16,719 INFO L470 AbstractCegarLoop]: Abstraction has 11294 states and 16279 transitions. [2021-11-23 03:44:16,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:44:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 11294 states and 16279 transitions. [2021-11-23 03:44:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:44:16,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:16,724 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:16,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:44:16,725 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash 552298856, now seen corresponding path program 1 times [2021-11-23 03:44:16,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547188049] [2021-11-23 03:44:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:16,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:44:17,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:17,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547188049] [2021-11-23 03:44:17,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547188049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:17,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:17,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:17,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147121327] [2021-11-23 03:44:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:17,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:17,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:17,146 INFO L87 Difference]: Start difference. First operand 11294 states and 16279 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:20,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:24,219 INFO L93 Difference]: Finished difference Result 22168 states and 32109 transitions. [2021-11-23 03:44:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2021-11-23 03:44:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:24,387 INFO L225 Difference]: With dead ends: 22168 [2021-11-23 03:44:24,387 INFO L226 Difference]: Without dead ends: 22165 [2021-11-23 03:44:24,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:24,405 INFO L933 BasicCegarLoop]: 3122 mSDtfsCounter, 2130 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 5101 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:24,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2130 Valid, 5101 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 689 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:44:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22165 states. [2021-11-23 03:44:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22165 to 22129. [2021-11-23 03:44:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22129 states, 14227 states have (on average 1.3391438813523582) internal successors, (19052), 14550 states have internal predecessors, (19052), 6167 states have call successors, (6167), 1743 states have call predecessors, (6167), 1734 states have return successors, (6848), 5943 states have call predecessors, (6848), 6160 states have call successors, (6848) [2021-11-23 03:44:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 32067 transitions. [2021-11-23 03:44:25,618 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 32067 transitions. Word has length 84 [2021-11-23 03:44:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:25,619 INFO L470 AbstractCegarLoop]: Abstraction has 22129 states and 32067 transitions. [2021-11-23 03:44:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 32067 transitions. [2021-11-23 03:44:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 03:44:25,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:25,623 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:25,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:44:25,623 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 422158427, now seen corresponding path program 1 times [2021-11-23 03:44:25,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:25,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607162674] [2021-11-23 03:44:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:25,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-23 03:44:25,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607162674] [2021-11-23 03:44:25,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607162674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:25,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:25,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:25,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031363389] [2021-11-23 03:44:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:25,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:25,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:25,893 INFO L87 Difference]: Start difference. First operand 22129 states and 32067 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:29,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:33,158 INFO L93 Difference]: Finished difference Result 65943 states and 95472 transitions. [2021-11-23 03:44:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:33,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-11-23 03:44:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:33,437 INFO L225 Difference]: With dead ends: 65943 [2021-11-23 03:44:33,437 INFO L226 Difference]: Without dead ends: 43832 [2021-11-23 03:44:33,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:33,586 INFO L933 BasicCegarLoop]: 3170 mSDtfsCounter, 2181 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:33,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 5126 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:44:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43832 states. [2021-11-23 03:44:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43832 to 43757. [2021-11-23 03:44:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43757 states, 28115 states have (on average 1.338218033078428) internal successors, (37624), 28758 states have internal predecessors, (37624), 12187 states have call successors, (12187), 3471 states have call predecessors, (12187), 3454 states have return successors, (13524), 11743 states have call predecessors, (13524), 12180 states have call successors, (13524) [2021-11-23 03:44:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43757 states to 43757 states and 63335 transitions. [2021-11-23 03:44:36,259 INFO L78 Accepts]: Start accepts. Automaton has 43757 states and 63335 transitions. Word has length 87 [2021-11-23 03:44:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:36,273 INFO L470 AbstractCegarLoop]: Abstraction has 43757 states and 63335 transitions. [2021-11-23 03:44:36,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 43757 states and 63335 transitions. [2021-11-23 03:44:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:44:36,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:36,277 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:36,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:44:36,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash -60058055, now seen corresponding path program 1 times [2021-11-23 03:44:36,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:36,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108963433] [2021-11-23 03:44:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:36,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:44:36,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:36,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108963433] [2021-11-23 03:44:36,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108963433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:36,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:36,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:36,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204240662] [2021-11-23 03:44:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:36,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:36,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:36,711 INFO L87 Difference]: Start difference. First operand 43757 states and 63335 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:39,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:43,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:46,012 INFO L93 Difference]: Finished difference Result 131110 states and 191415 transitions. [2021-11-23 03:44:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2021-11-23 03:44:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:46,831 INFO L225 Difference]: With dead ends: 131110 [2021-11-23 03:44:46,832 INFO L226 Difference]: Without dead ends: 87371 [2021-11-23 03:44:47,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:47,029 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 2193 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:47,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 5158 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 690 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:44:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87371 states. [2021-11-23 03:44:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87371 to 87312. [2021-11-23 03:44:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87312 states, 56094 states have (on average 1.338289300103398) internal successors, (75070), 57405 states have internal predecessors, (75070), 24315 states have call successors, (24315), 6935 states have call predecessors, (24315), 6902 states have return successors, (27812), 23403 states have call predecessors, (27812), 24308 states have call successors, (27812) [2021-11-23 03:44:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87312 states to 87312 states and 127197 transitions. [2021-11-23 03:44:52,269 INFO L78 Accepts]: Start accepts. Automaton has 87312 states and 127197 transitions. Word has length 85 [2021-11-23 03:44:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:52,271 INFO L470 AbstractCegarLoop]: Abstraction has 87312 states and 127197 transitions. [2021-11-23 03:44:52,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 87312 states and 127197 transitions. [2021-11-23 03:44:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:44:52,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:52,274 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:52,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:44:52,275 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:52,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1863248245, now seen corresponding path program 1 times [2021-11-23 03:44:52,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649525552] [2021-11-23 03:44:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:52,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:44:52,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:52,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649525552] [2021-11-23 03:44:52,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649525552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:52,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:52,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:52,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904873529] [2021-11-23 03:44:52,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:52,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:52,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:52,497 INFO L87 Difference]: Start difference. First operand 87312 states and 127197 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:44:55,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:58,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:02,325 INFO L93 Difference]: Finished difference Result 130012 states and 193899 transitions. [2021-11-23 03:45:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2021-11-23 03:45:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:03,434 INFO L225 Difference]: With dead ends: 130012 [2021-11-23 03:45:03,435 INFO L226 Difference]: Without dead ends: 130009 [2021-11-23 03:45:03,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:03,491 INFO L933 BasicCegarLoop]: 3171 mSDtfsCounter, 2144 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:03,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2144 Valid, 5237 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 693 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 03:45:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130009 states. [2021-11-23 03:45:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130009 to 129844. [2021-11-23 03:45:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129844 states, 83434 states have (on average 1.3405206510535272) internal successors, (111845), 85669 states have internal predecessors, (111845), 36187 states have call successors, (36187), 10399 states have call predecessors, (36187), 10222 states have return successors, (45668), 34391 states have call predecessors, (45668), 36180 states have call successors, (45668) [2021-11-23 03:45:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129844 states to 129844 states and 193700 transitions. [2021-11-23 03:45:10,303 INFO L78 Accepts]: Start accepts. Automaton has 129844 states and 193700 transitions. Word has length 86 [2021-11-23 03:45:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:10,304 INFO L470 AbstractCegarLoop]: Abstraction has 129844 states and 193700 transitions. [2021-11-23 03:45:10,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:45:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 129844 states and 193700 transitions. [2021-11-23 03:45:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 03:45:10,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:10,317 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:10,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:45:10,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1927564420, now seen corresponding path program 1 times [2021-11-23 03:45:10,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:10,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342731675] [2021-11-23 03:45:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:10,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:45:10,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:10,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342731675] [2021-11-23 03:45:10,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342731675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:10,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:10,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:10,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325100899] [2021-11-23 03:45:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:10,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:10,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:10,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:10,562 INFO L87 Difference]: Start difference. First operand 129844 states and 193700 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:45:13,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:17,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:24,450 INFO L93 Difference]: Finished difference Result 285591 states and 430190 transitions. [2021-11-23 03:45:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-11-23 03:45:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:26,080 INFO L225 Difference]: With dead ends: 285591 [2021-11-23 03:45:26,081 INFO L226 Difference]: Without dead ends: 191305 [2021-11-23 03:45:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:26,646 INFO L933 BasicCegarLoop]: 3104 mSDtfsCounter, 2071 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 5107 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2071 Valid, 5107 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 690 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:45:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191305 states.