./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P --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 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:45:56,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:45:56,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:45:56,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:45:56,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:45:56,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:45:56,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:45:56,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:45:56,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:45:56,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:45:56,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:45:56,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:45:56,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:45:56,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:45:56,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:45:56,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:45:56,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:45:56,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:45:56,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:45:56,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:45:56,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:45:56,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:45:56,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:45:56,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:45:56,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:45:56,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:45:56,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:45:56,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:45:56,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:45:56,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:45:56,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:45:56,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:45:56,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:45:56,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:45:56,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:45:56,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:45:56,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:45:56,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:45:56,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:45:56,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:45:56,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:45:56,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:45:56,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:45:56,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:45:56,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:45:56,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:45:56,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:45:56,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:45:56,213 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:45:56,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:45:56,213 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:45:56,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:45:56,214 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:45:56,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:45:56,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:45:56,215 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:45:56,215 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:45:56,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:45:56,216 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:45:56,216 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:45:56,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:45:56,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:45:56,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:45:56,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:45:56,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:45:56,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:45:56,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:45:56,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:45:56,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:45:56,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:45:56,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:45:56,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:45:56,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:45:56,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:45:56,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:45:56,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:45:56,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:45:56,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:45:56,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:45:56,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:45:56,223 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_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 [2021-11-21 01:45:56,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:45:56,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:45:56,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:45:56,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:45:56,514 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:45:56,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-21 01:45:56,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/data/d81877e57/6be6595300264791bfb24d4720671d28/FLAG196cb136d [2021-11-21 01:45:57,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:45:57,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-21 01:45:57,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/data/d81877e57/6be6595300264791bfb24d4720671d28/FLAG196cb136d [2021-11-21 01:45:57,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/data/d81877e57/6be6595300264791bfb24d4720671d28 [2021-11-21 01:45:57,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:45:57,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:45:57,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:45:57,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:45:57,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:45:57,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:57" (1/1) ... [2021-11-21 01:45:57,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64497ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:57, skipping insertion in model container [2021-11-21 01:45:57,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:57" (1/1) ... [2021-11-21 01:45:57,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:45:58,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:45:58,598 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2021-11-21 01:45:58,599 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2021-11-21 01:45:58,987 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_93cde6a7-4e16-403e-9a66-9a61eb2d6300/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2021-11-21 01:46:00,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:00,300 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:00,443 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2021-11-21 01:46:00,443 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2021-11-21 01:46:00,456 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_93cde6a7-4e16-403e-9a66-9a61eb2d6300/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2021-11-21 01:46:00,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:00,942 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:00,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00 WrapperNode [2021-11-21 01:46:00,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:00,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:00,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:00,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:00,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,268 INFO L137 Inliner]: procedures = 245, calls = 3249, calls flagged for inlining = 96, calls inlined = 88, statements flattened = 4871 [2021-11-21 01:46:01,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:01,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:01,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:01,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:01,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:01,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:01,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:01,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:01,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (1/1) ... [2021-11-21 01:46:01,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:01,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:01,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:01,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_resume [2021-11-21 01:46:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_resume [2021-11-21 01:46:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_request [2021-11-21 01:46:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_request [2021-11-21 01:46:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_pullup [2021-11-21 01:46:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_pullup [2021-11-21 01:46:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_enable [2021-11-21 01:46:01,790 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_enable [2021-11-21 01:46:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_disable [2021-11-21 01:46:01,790 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_disable [2021-11-21 01:46:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:46:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:46:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:46:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:46:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2021-11-21 01:46:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2021-11-21 01:46:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-21 01:46:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-21 01:46:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:46:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:46:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-21 01:46:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-21 01:46:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure ep_open [2021-11-21 01:46:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_open [2021-11-21 01:46:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_disconnect [2021-11-21 01:46:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_disconnect [2021-11-21 01:46:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-21 01:46:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-21 01:46:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 01:46:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 01:46:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:46:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:46:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:46:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:46:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:46:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:46:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_write_fifo [2021-11-21 01:46:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_write_fifo [2021-11-21 01:46:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure __orr32 [2021-11-21 01:46:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __orr32 [2021-11-21 01:46:01,795 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_read_frameno [2021-11-21 01:46:01,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_read_frameno [2021-11-21 01:46:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure our_ep [2021-11-21 01:46:01,796 INFO L138 BoogieDeclarations]: Found implementation of procedure our_ep [2021-11-21 01:46:01,796 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_dump [2021-11-21 01:46:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_dump [2021-11-21 01:46:01,798 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_core_init [2021-11-21 01:46:01,798 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_core_init [2021-11-21 01:46:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-11-21 01:46:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-11-21 01:46:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:46:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-21 01:46:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-21 01:46:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:46:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:46:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure to_hsotg [2021-11-21 01:46:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure to_hsotg [2021-11-21 01:46:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 01:46:01,800 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 01:46:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:46:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_enqueue_setup [2021-11-21 01:46:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_enqueue_setup [2021-11-21 01:46:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_start [2021-11-21 01:46:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_start [2021-11-21 01:46:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-21 01:46:01,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-21 01:46:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:46:01,802 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:46:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_probe [2021-11-21 01:46:01,802 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_probe [2021-11-21 01:46:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:46:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:46:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure our_req [2021-11-21 01:46:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure our_req [2021-11-21 01:46:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure ep_from_windex [2021-11-21 01:46:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_from_windex [2021-11-21 01:46:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_stop [2021-11-21 01:46:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_stop [2021-11-21 01:46:01,804 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-21 01:46:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-21 01:46:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_req_feature [2021-11-21 01:46:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_req_feature [2021-11-21 01:46:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_enable [2021-11-21 01:46:01,806 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_enable [2021-11-21 01:46:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_queue [2021-11-21 01:46:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_queue [2021-11-21 01:46:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure get_ep_head [2021-11-21 01:46:01,807 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ep_head [2021-11-21 01:46:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:46:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:46:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-21 01:46:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-21 01:46:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure fifo_open [2021-11-21 01:46:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure fifo_open [2021-11-21 01:46:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure phy_exit [2021-11-21 01:46:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_exit [2021-11-21 01:46:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-21 01:46:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-21 01:46:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_alloc_request [2021-11-21 01:46:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_alloc_request [2021-11-21 01:46:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_init_fifo [2021-11-21 01:46:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_init_fifo [2021-11-21 01:46:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:46:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:46:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:46:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_send_reply [2021-11-21 01:46:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_send_reply [2021-11-21 01:46:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure phy_init [2021-11-21 01:46:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_init [2021-11-21 01:46:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_free_request [2021-11-21 01:46:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_free_request [2021-11-21 01:46:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:46:01,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:46:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure usb_phy_init [2021-11-21 01:46:01,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_phy_init [2021-11-21 01:46:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:46:01,818 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:46:01,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:46:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep0_mps [2021-11-21 01:46:01,825 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep0_mps [2021-11-21 01:46:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt_lock [2021-11-21 01:46:01,825 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt_lock [2021-11-21 01:46:01,825 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_setup [2021-11-21 01:46:01,825 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_setup [2021-11-21 01:46:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_control [2021-11-21 01:46:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_control [2021-11-21 01:46:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:46:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-21 01:46:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-21 01:46:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_txfifo_flush [2021-11-21 01:46:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_txfifo_flush [2021-11-21 01:46:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt [2021-11-21 01:46:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt [2021-11-21 01:46:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:46:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:46:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_disable [2021-11-21 01:46:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_disable [2021-11-21 01:46:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_corereset [2021-11-21 01:46:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_corereset [2021-11-21 01:46:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:46:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:46:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_gadget_getframe [2021-11-21 01:46:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_gadget_getframe [2021-11-21 01:46:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-21 01:46:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-21 01:46:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:46:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:46:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:46:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-21 01:46:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-21 01:46:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure state_open [2021-11-21 01:46:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure state_open [2021-11-21 01:46:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure __bic32 [2021-11-21 01:46:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __bic32 [2021-11-21 01:46:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:46:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:46:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ctrl_epint [2021-11-21 01:46:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ctrl_epint [2021-11-21 01:46:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:46:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_en_gsint [2021-11-21 01:46:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_en_gsint [2021-11-21 01:46:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-21 01:46:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-21 01:46:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:46:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:46:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:46:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_set_ep_maxpacket [2021-11-21 01:46:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_set_ep_maxpacket [2021-11-21 01:46:01,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:46:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:46:01,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:46:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:46:01,832 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_enable [2021-11-21 01:46:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_enable [2021-11-21 01:46:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:46:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:46:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure kill_all_requests [2021-11-21 01:46:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_all_requests [2021-11-21 01:46:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_remove [2021-11-21 01:46:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_remove [2021-11-21 01:46:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-21 01:46:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-21 01:46:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:46:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:46:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure using_dma [2021-11-21 01:46:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure using_dma [2021-11-21 01:46:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:46:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:46:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:46:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:46:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_dequeue [2021-11-21 01:46:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_dequeue [2021-11-21 01:46:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-21 01:46:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-21 01:46:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_start_req [2021-11-21 01:46:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_start_req [2021-11-21 01:46:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:46:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:46:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:46:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:46:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:46:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:46:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_stall_ep0 [2021-11-21 01:46:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_stall_ep0 [2021-11-21 01:46:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:46:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:46:02,613 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:02,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:03,452 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:46:08,297 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:09,602 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:09,602 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:46:09,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:09 BoogieIcfgContainer [2021-11-21 01:46:09,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:09,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:09,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:09,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:09,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:45:57" (1/3) ... [2021-11-21 01:46:09,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d38b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:09, skipping insertion in model container [2021-11-21 01:46:09,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:00" (2/3) ... [2021-11-21 01:46:09,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d38b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:09, skipping insertion in model container [2021-11-21 01:46:09,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:09" (3/3) ... [2021-11-21 01:46:09,622 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-21 01:46:09,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:09,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:46:09,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:09,710 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 [2021-11-21 01:46:09,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:46:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 1475 states, 884 states have (on average 1.2986425339366516) internal successors, (1148), 921 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) [2021-11-21 01:46:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 01:46:09,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:09,811 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:09,811 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:09,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1211261877, now seen corresponding path program 1 times [2021-11-21 01:46:09,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347968604] [2021-11-21 01:46:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:09,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-21 01:46:10,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347968604] [2021-11-21 01:46:10,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347968604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:10,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:10,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:10,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404954426] [2021-11-21 01:46:10,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:10,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:10,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:10,641 INFO L87 Difference]: Start difference. First operand has 1475 states, 884 states have (on average 1.2986425339366516) internal successors, (1148), 921 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-21 01:46:12,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:16,027 INFO L93 Difference]: Finished difference Result 4329 states and 6342 transitions. [2021-11-21 01:46:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2021-11-21 01:46:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:16,087 INFO L225 Difference]: With dead ends: 4329 [2021-11-21 01:46:16,087 INFO L226 Difference]: Without dead ends: 2851 [2021-11-21 01:46:16,104 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 [2021-11-21 01:46:16,108 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 2015 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:16,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 4259 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:46:16,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-11-21 01:46:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2847. [2021-11-21 01:46:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 1710 states have (on average 1.2818713450292398) internal successors, (2192), 1763 states have internal predecessors, (2192), 947 states have call successors, (947), 190 states have call predecessors, (947), 189 states have return successors, (946), 939 states have call predecessors, (946), 946 states have call successors, (946) [2021-11-21 01:46:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 4085 transitions. [2021-11-21 01:46:16,434 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 4085 transitions. Word has length 74 [2021-11-21 01:46:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:16,436 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 4085 transitions. [2021-11-21 01:46:16,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-21 01:46:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 4085 transitions. [2021-11-21 01:46:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-21 01:46:16,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:16,457 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:16,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:46:16,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1684560737, now seen corresponding path program 1 times [2021-11-21 01:46:16,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994540857] [2021-11-21 01:46:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:16,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-21 01:46:16,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994540857] [2021-11-21 01:46:16,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994540857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:16,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:16,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:16,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193020878] [2021-11-21 01:46:16,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:16,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:16,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:16,989 INFO L87 Difference]: Start difference. First operand 2847 states and 4085 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:46:19,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:21,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:22,306 INFO L93 Difference]: Finished difference Result 8364 states and 11986 transitions. [2021-11-21 01:46:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:22,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 162 [2021-11-21 01:46:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:22,361 INFO L225 Difference]: With dead ends: 8364 [2021-11-21 01:46:22,362 INFO L226 Difference]: Without dead ends: 5541 [2021-11-21 01:46:22,380 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 [2021-11-21 01:46:22,383 INFO L933 BasicCegarLoop]: 2600 mSDtfsCounter, 1950 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:22,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 4467 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:46:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2021-11-21 01:46:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 5538. [2021-11-21 01:46:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 3327 states have (on average 1.2810339645326119) internal successors, (4262), 3432 states have internal predecessors, (4262), 1835 states have call successors, (1835), 376 states have call predecessors, (1835), 375 states have return successors, (1834), 1821 states have call predecessors, (1834), 1834 states have call successors, (1834) [2021-11-21 01:46:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 7931 transitions. [2021-11-21 01:46:22,854 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 7931 transitions. Word has length 162 [2021-11-21 01:46:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:22,857 INFO L470 AbstractCegarLoop]: Abstraction has 5538 states and 7931 transitions. [2021-11-21 01:46:22,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:46:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 7931 transitions. [2021-11-21 01:46:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-21 01:46:22,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:22,874 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:22,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:46:22,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash 308659693, now seen corresponding path program 1 times [2021-11-21 01:46:22,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26316429] [2021-11-21 01:46:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:22,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-21 01:46:23,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:23,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26316429] [2021-11-21 01:46:23,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26316429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:23,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:23,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:23,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610149289] [2021-11-21 01:46:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:23,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:23,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:23,313 INFO L87 Difference]: Start difference. First operand 5538 states and 7931 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-21 01:46:25,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:28,227 INFO L93 Difference]: Finished difference Result 8555 states and 12175 transitions. [2021-11-21 01:46:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2021-11-21 01:46:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:28,305 INFO L225 Difference]: With dead ends: 8555 [2021-11-21 01:46:28,305 INFO L226 Difference]: Without dead ends: 8552 [2021-11-21 01:46:28,315 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 [2021-11-21 01:46:28,319 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 1706 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:28,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 3880 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:46:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2021-11-21 01:46:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8444. [2021-11-21 01:46:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8444 states, 5011 states have (on average 1.258431450808222) internal successors, (6306), 5176 states have internal predecessors, (6306), 2819 states have call successors, (2819), 614 states have call predecessors, (2819), 613 states have return successors, (2884), 2789 states have call predecessors, (2884), 2818 states have call successors, (2884) [2021-11-21 01:46:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 12009 transitions. [2021-11-21 01:46:29,044 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 12009 transitions. Word has length 151 [2021-11-21 01:46:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:29,045 INFO L470 AbstractCegarLoop]: Abstraction has 8444 states and 12009 transitions. [2021-11-21 01:46:29,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-21 01:46:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 12009 transitions. [2021-11-21 01:46:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-21 01:46:29,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:29,062 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:29,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:46:29,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1697535650, now seen corresponding path program 1 times [2021-11-21 01:46:29,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:29,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570224659] [2021-11-21 01:46:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:29,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-21 01:46:29,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:29,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570224659] [2021-11-21 01:46:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570224659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:29,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:29,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:29,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325805678] [2021-11-21 01:46:29,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:29,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:29,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:29,360 INFO L87 Difference]: Start difference. First operand 8444 states and 12009 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:46:31,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:33,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:35,753 INFO L93 Difference]: Finished difference Result 23282 states and 33120 transitions. [2021-11-21 01:46:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2021-11-21 01:46:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:35,890 INFO L225 Difference]: With dead ends: 23282 [2021-11-21 01:46:35,890 INFO L226 Difference]: Without dead ends: 14862 [2021-11-21 01:46:35,939 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 [2021-11-21 01:46:35,943 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 1990 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 4264 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:46:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14862 states. [2021-11-21 01:46:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14862 to 14859. [2021-11-21 01:46:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14859 states, 8835 states have (on average 1.2606677985285795) internal successors, (11138), 9126 states have internal predecessors, (11138), 4943 states have call successors, (4943), 1084 states have call predecessors, (4943), 1080 states have return successors, (5058), 4887 states have call predecessors, (5058), 4942 states have call successors, (5058) [2021-11-21 01:46:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14859 states to 14859 states and 21139 transitions. [2021-11-21 01:46:36,948 INFO L78 Accepts]: Start accepts. Automaton has 14859 states and 21139 transitions. Word has length 172 [2021-11-21 01:46:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:36,949 INFO L470 AbstractCegarLoop]: Abstraction has 14859 states and 21139 transitions. [2021-11-21 01:46:36,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:46:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14859 states and 21139 transitions. [2021-11-21 01:46:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-21 01:46:36,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:36,963 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:36,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:46:36,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2087335386, now seen corresponding path program 1 times [2021-11-21 01:46:36,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341213952] [2021-11-21 01:46:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:36,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-21 01:46:37,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:37,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341213952] [2021-11-21 01:46:37,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341213952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:37,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:37,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:37,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042014989] [2021-11-21 01:46:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:37,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:37,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:37,254 INFO L87 Difference]: Start difference. First operand 14859 states and 21139 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:46:39,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:41,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:41,960 INFO L93 Difference]: Finished difference Result 29695 states and 42245 transitions. [2021-11-21 01:46:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:41,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 179 [2021-11-21 01:46:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:42,039 INFO L225 Difference]: With dead ends: 29695 [2021-11-21 01:46:42,039 INFO L226 Difference]: Without dead ends: 14856 [2021-11-21 01:46:42,105 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 [2021-11-21 01:46:42,106 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 0 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:42,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3761 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 01:46:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2021-11-21 01:46:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14852. [2021-11-21 01:46:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14852 states, 8828 states have (on average 1.260421386497508) internal successors, (11127), 9121 states have internal predecessors, (11127), 4943 states have call successors, (4943), 1084 states have call predecessors, (4943), 1080 states have return successors, (5058), 4885 states have call predecessors, (5058), 4942 states have call successors, (5058) [2021-11-21 01:46:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14852 states to 14852 states and 21128 transitions. [2021-11-21 01:46:43,154 INFO L78 Accepts]: Start accepts. Automaton has 14852 states and 21128 transitions. Word has length 179 [2021-11-21 01:46:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:43,156 INFO L470 AbstractCegarLoop]: Abstraction has 14852 states and 21128 transitions. [2021-11-21 01:46:43,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:46:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14852 states and 21128 transitions. [2021-11-21 01:46:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-21 01:46:43,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:43,202 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:46:43,202 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 994754935, now seen corresponding path program 1 times [2021-11-21 01:46:43,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:43,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848440816] [2021-11-21 01:46:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:43,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2021-11-21 01:46:43,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:43,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848440816] [2021-11-21 01:46:43,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848440816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:43,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:43,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:46:43,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957071206] [2021-11-21 01:46:43,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:43,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:46:43,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:46:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:46:43,903 INFO L87 Difference]: Start difference. First operand 14852 states and 21128 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:46:45,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:49,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:51,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:53,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:55,552 INFO L93 Difference]: Finished difference Result 26339 states and 37577 transitions. [2021-11-21 01:46:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:46:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 235 [2021-11-21 01:46:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:55,612 INFO L225 Difference]: With dead ends: 26339 [2021-11-21 01:46:55,612 INFO L226 Difference]: Without dead ends: 11511 [2021-11-21 01:46:55,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:46:55,664 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 7 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7522 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:55,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 7522 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1279 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2021-11-21 01:46:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2021-11-21 01:46:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11511. [2021-11-21 01:46:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11511 states, 6854 states have (on average 1.257659760723665) internal successors, (8620), 7072 states have internal predecessors, (8620), 3766 states have call successors, (3766), 903 states have call predecessors, (3766), 890 states have return successors, (3845), 3715 states have call predecessors, (3845), 3765 states have call successors, (3845) [2021-11-21 01:46:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11511 states to 11511 states and 16231 transitions. [2021-11-21 01:46:56,384 INFO L78 Accepts]: Start accepts. Automaton has 11511 states and 16231 transitions. Word has length 235 [2021-11-21 01:46:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:56,385 INFO L470 AbstractCegarLoop]: Abstraction has 11511 states and 16231 transitions. [2021-11-21 01:46:56,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:46:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11511 states and 16231 transitions. [2021-11-21 01:46:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-21 01:46:56,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:56,448 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 8, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:46:56,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -329515058, now seen corresponding path program 1 times [2021-11-21 01:46:56,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:56,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716003152] [2021-11-21 01:46:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:56,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-11-21 01:46:56,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716003152] [2021-11-21 01:46:56,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716003152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300266970] [2021-11-21 01:46:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:56,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:56,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:56,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:46:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:58,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 5718 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:46:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-11-21 01:46:59,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300266970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:59,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:46:59,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-21 01:46:59,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995348012] [2021-11-21 01:46:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:59,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:59,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:46:59,229 INFO L87 Difference]: Start difference. First operand 11511 states and 16231 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:47:01,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:03,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:05,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:06,614 INFO L93 Difference]: Finished difference Result 29845 states and 42043 transitions. [2021-11-21 01:47:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 370 [2021-11-21 01:47:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:06,730 INFO L225 Difference]: With dead ends: 29845 [2021-11-21 01:47:06,730 INFO L226 Difference]: Without dead ends: 18358 [2021-11-21 01:47:06,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:06,780 INFO L933 BasicCegarLoop]: 2053 mSDtfsCounter, 1644 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:06,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 3585 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 399 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 01:47:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18358 states. [2021-11-21 01:47:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18358 to 18355. [2021-11-21 01:47:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18355 states, 10916 states have (on average 1.2532979113228289) internal successors, (13681), 11252 states have internal predecessors, (13681), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1429 states have return successors, (6138), 5946 states have call predecessors, (6138), 6008 states have call successors, (6138) [2021-11-21 01:47:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18355 states to 18355 states and 25828 transitions. [2021-11-21 01:47:07,928 INFO L78 Accepts]: Start accepts. Automaton has 18355 states and 25828 transitions. Word has length 370 [2021-11-21 01:47:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:07,929 INFO L470 AbstractCegarLoop]: Abstraction has 18355 states and 25828 transitions. [2021-11-21 01:47:07,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:47:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states and 25828 transitions. [2021-11-21 01:47:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-21 01:47:08,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:08,023 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:08,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:08,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1067880242, now seen corresponding path program 1 times [2021-11-21 01:47:08,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784586574] [2021-11-21 01:47:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:08,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2021-11-21 01:47:08,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784586574] [2021-11-21 01:47:08,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784586574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:47:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338934039] [2021-11-21 01:47:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:08,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:08,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:08,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:47:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:10,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 5740 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:47:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2021-11-21 01:47:11,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:47:11,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338934039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:11,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:47:11,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-21 01:47:11,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275024899] [2021-11-21 01:47:11,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:11,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:11,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:11,386 INFO L87 Difference]: Start difference. First operand 18355 states and 25828 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:47:13,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:18,090 INFO L93 Difference]: Finished difference Result 36774 states and 52173 transitions. [2021-11-21 01:47:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:47:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) Word has length 374 [2021-11-21 01:47:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:18,191 INFO L225 Difference]: With dead ends: 36774 [2021-11-21 01:47:18,191 INFO L226 Difference]: Without dead ends: 18451 [2021-11-21 01:47:18,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:18,256 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 2 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:18,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6287 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 768 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:47:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18451 states. [2021-11-21 01:47:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18451 to 18419. [2021-11-21 01:47:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18419 states, 10962 states have (on average 1.252234993614304) internal successors, (13727), 11302 states have internal predecessors, (13727), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-21 01:47:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18419 states to 18419 states and 26008 transitions. [2021-11-21 01:47:19,380 INFO L78 Accepts]: Start accepts. Automaton has 18419 states and 26008 transitions. Word has length 374 [2021-11-21 01:47:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:19,383 INFO L470 AbstractCegarLoop]: Abstraction has 18419 states and 26008 transitions. [2021-11-21 01:47:19,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-21 01:47:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18419 states and 26008 transitions. [2021-11-21 01:47:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-21 01:47:19,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:19,474 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:19,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:19,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -694181837, now seen corresponding path program 1 times [2021-11-21 01:47:19,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469827868] [2021-11-21 01:47:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:19,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-21 01:47:20,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469827868] [2021-11-21 01:47:20,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469827868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:20,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:20,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:47:20,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090358777] [2021-11-21 01:47:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:20,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:20,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:20,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:47:20,116 INFO L87 Difference]: Start difference. First operand 18419 states and 26008 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:47:22,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:25,332 INFO L93 Difference]: Finished difference Result 36820 states and 52323 transitions. [2021-11-21 01:47:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 388 [2021-11-21 01:47:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:25,516 INFO L225 Difference]: With dead ends: 36820 [2021-11-21 01:47:25,516 INFO L226 Difference]: Without dead ends: 18433 [2021-11-21 01:47:25,584 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 [2021-11-21 01:47:25,586 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 0 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:25,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3154 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:47:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18433 states. [2021-11-21 01:47:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18433 to 18433. [2021-11-21 01:47:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18433 states, 10976 states have (on average 1.2519132653061225) internal successors, (13741), 11316 states have internal predecessors, (13741), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-21 01:47:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18433 states to 18433 states and 26022 transitions. [2021-11-21 01:47:26,703 INFO L78 Accepts]: Start accepts. Automaton has 18433 states and 26022 transitions. Word has length 388 [2021-11-21 01:47:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:26,704 INFO L470 AbstractCegarLoop]: Abstraction has 18433 states and 26022 transitions. [2021-11-21 01:47:26,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:47:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18433 states and 26022 transitions. [2021-11-21 01:47:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-11-21 01:47:26,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:26,772 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:26,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:47:26,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1726071906, now seen corresponding path program 1 times [2021-11-21 01:47:26,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:26,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2965260] [2021-11-21 01:47:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:26,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-21 01:47:27,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2965260] [2021-11-21 01:47:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2965260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:47:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913595197] [2021-11-21 01:47:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:27,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:27,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:27,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:47:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:29,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 5807 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:47:29,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-21 01:47:30,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:47:30,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913595197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:30,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:47:30,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:47:30,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193091660] [2021-11-21 01:47:30,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:30,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:47:30,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:30,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:47:30,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:30,265 INFO L87 Difference]: Start difference. First operand 18433 states and 26022 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:47:32,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:34,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:35,865 INFO L93 Difference]: Finished difference Result 36894 states and 52503 transitions. [2021-11-21 01:47:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 389 [2021-11-21 01:47:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:35,959 INFO L225 Difference]: With dead ends: 36894 [2021-11-21 01:47:35,959 INFO L226 Difference]: Without dead ends: 18493 [2021-11-21 01:47:36,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:36,018 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:36,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3152 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:47:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18493 states. [2021-11-21 01:47:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18493 to 18453. [2021-11-21 01:47:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18453 states, 10996 states have (on average 1.2514550745725719) internal successors, (13761), 11336 states have internal predecessors, (13761), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-21 01:47:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18453 states to 18453 states and 26042 transitions. [2021-11-21 01:47:36,985 INFO L78 Accepts]: Start accepts. Automaton has 18453 states and 26042 transitions. Word has length 389 [2021-11-21 01:47:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 18453 states and 26042 transitions. [2021-11-21 01:47:36,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 01:47:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18453 states and 26042 transitions. [2021-11-21 01:47:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-11-21 01:47:37,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:37,242 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:37,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:37,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:47:37,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash 340596561, now seen corresponding path program 1 times [2021-11-21 01:47:37,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:37,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580694093] [2021-11-21 01:47:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:37,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-11-21 01:47:38,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:38,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580694093] [2021-11-21 01:47:38,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580694093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:47:38,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796699647] [2021-11-21 01:47:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:38,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:38,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:38,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:47:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:39,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 5831 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:39,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-11-21 01:47:40,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:47:40,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796699647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:40,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:47:40,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-21 01:47:40,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739980893] [2021-11-21 01:47:40,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:40,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:40,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:47:40,542 INFO L87 Difference]: Start difference. First operand 18453 states and 26042 transitions. Second operand has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:47:42,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:45,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:46,531 INFO L93 Difference]: Finished difference Result 36884 states and 52054 transitions. [2021-11-21 01:47:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:46,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 394 [2021-11-21 01:47:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:46,604 INFO L225 Difference]: With dead ends: 36884 [2021-11-21 01:47:46,604 INFO L226 Difference]: Without dead ends: 18454 [2021-11-21 01:47:46,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:47:46,657 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:46,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4727 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 561 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2021-11-21 01:47:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2021-11-21 01:47:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18454. [2021-11-21 01:47:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 10997 states have (on average 1.2514322087842138) internal successors, (13762), 11337 states have internal predecessors, (13762), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-21 01:47:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 26043 transitions. [2021-11-21 01:47:47,563 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 26043 transitions. Word has length 394 [2021-11-21 01:47:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:47,564 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 26043 transitions. [2021-11-21 01:47:47,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:47:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 26043 transitions. [2021-11-21 01:47:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-21 01:47:47,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:47,621 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:47,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:47,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:47,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1717329485, now seen corresponding path program 1 times [2021-11-21 01:47:47,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580561433] [2021-11-21 01:47:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:47,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2021-11-21 01:47:48,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:48,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580561433] [2021-11-21 01:47:48,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580561433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:47:48,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39006628] [2021-11-21 01:47:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:48,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:47:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:48,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:47:48,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:47:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:50,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:47:50,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2021-11-21 01:47:51,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2021-11-21 01:47:51,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39006628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:47:51,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379704443] [2021-11-21 01:47:51,844 INFO L159 IcfgInterpreter]: Started Sifa with 231 locations of interest [2021-11-21 01:47:51,844 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:47:51,860 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:47:51,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:47:51,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-21 01:47:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342589488] [2021-11-21 01:47:51,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:47:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:47:51,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:47:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:51,871 INFO L87 Difference]: Start difference. First operand 18454 states and 26043 transitions. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2021-11-21 01:47:53,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:57,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:00,692 INFO L93 Difference]: Finished difference Result 37069 states and 52772 transitions. [2021-11-21 01:48:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:48:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) Word has length 397 [2021-11-21 01:48:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:00,752 INFO L225 Difference]: With dead ends: 37069 [2021-11-21 01:48:00,752 INFO L226 Difference]: Without dead ends: 18648 [2021-11-21 01:48:00,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:48:00,825 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 4 mSDsluCounter, 7036 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:00,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7882 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 956 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:48:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18648 states. [2021-11-21 01:48:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18648 to 18648. [2021-11-21 01:48:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18648 states, 11131 states have (on average 1.2484053544155962) internal successors, (13896), 11471 states have internal predecessors, (13896), 6069 states have call successors, (6069), 1442 states have call predecessors, (6069), 1447 states have return successors, (6332), 6020 states have call predecessors, (6332), 6068 states have call successors, (6332) [2021-11-21 01:48:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18648 states to 18648 states and 26297 transitions. [2021-11-21 01:48:01,815 INFO L78 Accepts]: Start accepts. Automaton has 18648 states and 26297 transitions. Word has length 397 [2021-11-21 01:48:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 18648 states and 26297 transitions. [2021-11-21 01:48:01,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2021-11-21 01:48:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18648 states and 26297 transitions. [2021-11-21 01:48:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-21 01:48:01,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:01,863 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 14, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:01,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:48:02,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:48:02,076 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:48:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2110693579, now seen corresponding path program 2 times [2021-11-21 01:48:02,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:02,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169913875] [2021-11-21 01:48:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:02,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-11-21 01:48:02,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:02,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169913875] [2021-11-21 01:48:02,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169913875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:48:02,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261665386] [2021-11-21 01:48:02,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:48:02,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:48:02,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:48:02,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:48:02,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cde6a7-4e16-403e-9a66-9a61eb2d6300/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process