./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.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_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/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_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/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_581d2f66-6600-4e75-9e6c-2eae847ff820/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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:30,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:30,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:30,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:30,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:30,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:30,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:30,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:30,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:30,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:30,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:30,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:30,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:30,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:30,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:30,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:30,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:30,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:30,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:30,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:30,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:30,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:30,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:30,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:30,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:30,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:30,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:30,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:30,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:30,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:30,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:30,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:30,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:30,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:30,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:30,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:30,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:30,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:30,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:30,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:30,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:30,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:32:30,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:30,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:30,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:30,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:30,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:30,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:30,196 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:30,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:30,197 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:30,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:30,198 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:30,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:30,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:30,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:30,199 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:30,199 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:30,199 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:30,200 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:30,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:30,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:30,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:30,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:30,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:30,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:30,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:30,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:30,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:30,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:30,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:30,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:30,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:30,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:30,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:30,205 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:30,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:30,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:30,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:30,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:30,206 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_581d2f66-6600-4e75-9e6c-2eae847ff820/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2021-11-20 23:32:30,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:30,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:30,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:30,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:30,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:30,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-20 23:32:30,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/data/d77e4ce39/a980b1e36a7046f2b026a45d62966d54/FLAGe05c9152b [2021-11-20 23:32:31,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:31,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-20 23:32:31,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/data/d77e4ce39/a980b1e36a7046f2b026a45d62966d54/FLAGe05c9152b [2021-11-20 23:32:31,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/data/d77e4ce39/a980b1e36a7046f2b026a45d62966d54 [2021-11-20 23:32:31,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:31,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:32,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:32,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:32,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:32,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:31" (1/1) ... [2021-11-20 23:32:32,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291b1011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:32, skipping insertion in model container [2021-11-20 23:32:32,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:31" (1/1) ... [2021-11-20 23:32:32,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:32,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:34,579 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_581d2f66-6600-4e75-9e6c-2eae847ff820/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2021-11-20 23:32:34,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:34,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:35,127 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_581d2f66-6600-4e75-9e6c-2eae847ff820/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2021-11-20 23:32:35,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:35,274 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:35,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35 WrapperNode [2021-11-20 23:32:35,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:35,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:35,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:35,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:35,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,651 INFO L137 Inliner]: procedures = 311, calls = 2050, calls flagged for inlining = 159, calls inlined = 157, statements flattened = 5633 [2021-11-20 23:32:35,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:35,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:35,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:35,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:35,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:35,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:35,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:35,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:35,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (1/1) ... [2021-11-20 23:32:35,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:36,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:36,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-20 23:32:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-20 23:32:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure loop_add [2021-11-20 23:32:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_add [2021-11-20 23:32:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:32:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:32:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:32:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:32:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure iov_iter_bvec [2021-11-20 23:32:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_iter_bvec [2021-11-20 23:32:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:32:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:32:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-20 23:32:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-20 23:32:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure loop_control_ioctl [2021-11-20 23:32:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_control_ioctl [2021-11-20 23:32:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 23:32:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 23:32:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 23:32:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 23:32:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:32:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:32:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2021-11-20 23:32:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2021-11-20 23:32:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-20 23:32:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-20 23:32:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure loop_remove [2021-11-20 23:32:36,071 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_remove [2021-11-20 23:32:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2021-11-20 23:32:36,071 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2021-11-20 23:32:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:32:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:32:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:32:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:32:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2021-11-20 23:32:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2021-11-20 23:32:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2021-11-20 23:32:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2021-11-20 23:32:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_unfreeze_queue [2021-11-20 23:32:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_unfreeze_queue [2021-11-20 23:32:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-11-20 23:32:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-11-20 23:32:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure lo_compat_ioctl [2021-11-20 23:32:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_compat_ioctl [2021-11-20 23:32:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-20 23:32:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-20 23:32:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:32:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:32:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:32:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:32:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:32:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:32:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-20 23:32:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-20 23:32:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2021-11-20 23:32:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2021-11-20 23:32:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure loop_handle_cmd [2021-11-20 23:32:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_handle_cmd [2021-11-20 23:32:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2021-11-20 23:32:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2021-11-20 23:32:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:32:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:32:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:32:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2021-11-20 23:32:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2021-11-20 23:32:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure get_size [2021-11-20 23:32:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure get_size [2021-11-20 23:32:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2021-11-20 23:32:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2021-11-20 23:32:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-20 23:32:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-20 23:32:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-20 23:32:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2021-11-20 23:32:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2021-11-20 23:32:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-20 23:32:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-20 23:32:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure lo_write_bvec [2021-11-20 23:32:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_write_bvec [2021-11-20 23:32:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:32:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-20 23:32:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-20 23:32:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-20 23:32:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-20 23:32:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-20 23:32:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-20 23:32:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status_old [2021-11-20 23:32:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status_old [2021-11-20 23:32:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 23:32:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 23:32:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 23:32:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 23:32:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:32:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:32:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure loop_reread_partitions [2021-11-20 23:32:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_reread_partitions [2021-11-20 23:32:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2021-11-20 23:32:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2021-11-20 23:32:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2021-11-20 23:32:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_iter_read [2021-11-20 23:32:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_iter_read [2021-11-20 23:32:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2021-11-20 23:32:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2021-11-20 23:32:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:32:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2021-11-20 23:32:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2021-11-20 23:32:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure ___might_sleep [2021-11-20 23:32:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ___might_sleep [2021-11-20 23:32:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-20 23:32:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-20 23:32:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:32:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:32:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:32:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure bio_advance_iter [2021-11-20 23:32:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_advance_iter [2021-11-20 23:32:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_write_work [2021-11-20 23:32:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_write_work [2021-11-20 23:32:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2021-11-20 23:32:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2021-11-20 23:32:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-20 23:32:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-20 23:32:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2021-11-20 23:32:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2021-11-20 23:32:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2021-11-20 23:32:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2021-11-20 23:32:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status64 [2021-11-20 23:32:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status64 [2021-11-20 23:32:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:32:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:32:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_11 [2021-11-20 23:32:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_11 [2021-11-20 23:32:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure zero_fill_bio [2021-11-20 23:32:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_fill_bio [2021-11-20 23:32:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:32:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:32:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure loop_attr_show [2021-11-20 23:32:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_attr_show [2021-11-20 23:32:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 23:32:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 23:32:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:32:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:32:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 23:32:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 23:32:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-20 23:32:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-20 23:32:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_freeze_queue [2021-11-20 23:32:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_freeze_queue [2021-11-20 23:32:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 23:32:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 23:32:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 23:32:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 23:32:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 23:32:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 23:32:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2021-11-20 23:32:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2021-11-20 23:32:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2021-11-20 23:32:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2021-11-20 23:32:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2021-11-20 23:32:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2021-11-20 23:32:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:32:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2021-11-20 23:32:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2021-11-20 23:32:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 23:32:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 23:32:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-11-20 23:32:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-11-20 23:32:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-11-20 23:32:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-11-20 23:32:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2021-11-20 23:32:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2021-11-20 23:32:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-20 23:32:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-20 23:32:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:32:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:32:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2021-11-20 23:32:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2021-11-20 23:32:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2021-11-20 23:32:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2021-11-20 23:32:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_read_work [2021-11-20 23:32:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_read_work [2021-11-20 23:32:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-20 23:32:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-20 23:32:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:32:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:32:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2021-11-20 23:32:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2021-11-20 23:32:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-20 23:32:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-20 23:32:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:32:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:32:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-20 23:32:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-20 23:32:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-20 23:32:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-20 23:32:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure loop_lookup [2021-11-20 23:32:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_lookup [2021-11-20 23:32:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure loop_queue_rq [2021-11-20 23:32:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_queue_rq [2021-11-20 23:32:37,048 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:37,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:37,559 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:32:45,321 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:46,581 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:46,582 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:32:46,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:46 BoogieIcfgContainer [2021-11-20 23:32:46,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:46,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:46,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:46,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:46,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:31" (1/3) ... [2021-11-20 23:32:46,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eb21e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:46, skipping insertion in model container [2021-11-20 23:32:46,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:35" (2/3) ... [2021-11-20 23:32:46,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72eb21e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:46, skipping insertion in model container [2021-11-20 23:32:46,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:46" (3/3) ... [2021-11-20 23:32:46,599 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-20 23:32:46,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:46,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:32:46,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:46,686 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 [2021-11-20 23:32:46,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:32:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2021-11-20 23:32:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-20 23:32:46,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:46,805 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:46,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash -280481047, now seen corresponding path program 1 times [2021-11-20 23:32:46,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223004142] [2021-11-20 23:32:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:46,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2021-11-20 23:32:48,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:48,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223004142] [2021-11-20 23:32:48,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223004142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:48,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:48,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:48,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799166125] [2021-11-20 23:32:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:48,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:48,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:48,086 INFO L87 Difference]: Start difference. First operand has 1252 states, 794 states have (on average 1.3614609571788414) internal successors, (1081), 829 states have internal predecessors, (1081), 363 states have call successors, (363), 94 states have call predecessors, (363), 93 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:32:50,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:32:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:56,201 INFO L93 Difference]: Finished difference Result 3522 states and 5078 transitions. [2021-11-20 23:32:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 522 [2021-11-20 23:32:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:56,267 INFO L225 Difference]: With dead ends: 3522 [2021-11-20 23:32:56,267 INFO L226 Difference]: Without dead ends: 2339 [2021-11-20 23:32:56,286 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 [2021-11-20 23:32:56,292 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 1610 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:56,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 3439 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 23:32:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-11-20 23:32:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2336. [2021-11-20 23:32:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1512 states have (on average 1.3531746031746033) internal successors, (2046), 1551 states have internal predecessors, (2046), 640 states have call successors, (640), 184 states have call predecessors, (640), 183 states have return successors, (638), 634 states have call predecessors, (638), 638 states have call successors, (638) [2021-11-20 23:32:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3324 transitions. [2021-11-20 23:32:56,596 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3324 transitions. Word has length 522 [2021-11-20 23:32:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:56,603 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 3324 transitions. [2021-11-20 23:32:56,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:32:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3324 transitions. [2021-11-20 23:32:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-20 23:32:56,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:56,628 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:56,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:32:56,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:32:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1822363867, now seen corresponding path program 1 times [2021-11-20 23:32:56,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:56,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023772943] [2021-11-20 23:32:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:56,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4531 trivial. 0 not checked. [2021-11-20 23:32:57,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:57,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023772943] [2021-11-20 23:32:57,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023772943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:57,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:57,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:57,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005129709] [2021-11-20 23:32:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:57,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:57,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:57,373 INFO L87 Difference]: Start difference. First operand 2336 states and 3324 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:32:59,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:04,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:07,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:07,508 INFO L93 Difference]: Finished difference Result 5839 states and 8279 transitions. [2021-11-20 23:33:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:07,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 544 [2021-11-20 23:33:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:07,542 INFO L225 Difference]: With dead ends: 5839 [2021-11-20 23:33:07,542 INFO L226 Difference]: Without dead ends: 3602 [2021-11-20 23:33:07,555 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 [2021-11-20 23:33:07,556 INFO L933 BasicCegarLoop]: 1725 mSDtfsCounter, 901 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:07,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 3267 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-20 23:33:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-20 23:33:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3592. [2021-11-20 23:33:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2352 states have (on average 1.3630952380952381) internal successors, (3206), 2404 states have internal predecessors, (3206), 943 states have call successors, (943), 297 states have call predecessors, (943), 296 states have return successors, (941), 934 states have call predecessors, (941), 941 states have call successors, (941) [2021-11-20 23:33:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5090 transitions. [2021-11-20 23:33:07,750 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5090 transitions. Word has length 544 [2021-11-20 23:33:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:07,752 INFO L470 AbstractCegarLoop]: Abstraction has 3592 states and 5090 transitions. [2021-11-20 23:33:07,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:33:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5090 transitions. [2021-11-20 23:33:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-20 23:33:07,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:07,769 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:07,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:33:07,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1494682149, now seen corresponding path program 1 times [2021-11-20 23:33:07,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177102656] [2021-11-20 23:33:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:07,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5021 trivial. 0 not checked. [2021-11-20 23:33:08,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177102656] [2021-11-20 23:33:08,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177102656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:08,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:08,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:08,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882501840] [2021-11-20 23:33:08,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:08,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:08,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:08,350 INFO L87 Difference]: Start difference. First operand 3592 states and 5090 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:33:10,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:15,876 INFO L93 Difference]: Finished difference Result 10497 states and 14909 transitions. [2021-11-20 23:33:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 542 [2021-11-20 23:33:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:15,938 INFO L225 Difference]: With dead ends: 10497 [2021-11-20 23:33:15,939 INFO L226 Difference]: Without dead ends: 6995 [2021-11-20 23:33:15,961 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 [2021-11-20 23:33:15,963 INFO L933 BasicCegarLoop]: 1982 mSDtfsCounter, 1575 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:15,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 3409 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-20 23:33:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6995 states. [2021-11-20 23:33:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6995 to 6991. [2021-11-20 23:33:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 4593 states have (on average 1.3657740039190072) internal successors, (6273), 4691 states have internal predecessors, (6273), 1807 states have call successors, (1807), 591 states have call predecessors, (1807), 590 states have return successors, (1829), 1792 states have call predecessors, (1829), 1805 states have call successors, (1829) [2021-11-20 23:33:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 9909 transitions. [2021-11-20 23:33:16,431 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 9909 transitions. Word has length 542 [2021-11-20 23:33:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:16,433 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 9909 transitions. [2021-11-20 23:33:16,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:33:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 9909 transitions. [2021-11-20 23:33:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2021-11-20 23:33:16,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:16,459 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 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] [2021-11-20 23:33:16,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:33:16,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:16,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2138122428, now seen corresponding path program 1 times [2021-11-20 23:33:16,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:16,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335663457] [2021-11-20 23:33:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:16,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-11-20 23:33:16,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335663457] [2021-11-20 23:33:16,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335663457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:16,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:16,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:16,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252667951] [2021-11-20 23:33:16,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:16,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:16,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:16,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:16,924 INFO L87 Difference]: Start difference. First operand 6991 states and 9909 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-20 23:33:18,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:24,583 INFO L93 Difference]: Finished difference Result 18156 states and 25735 transitions. [2021-11-20 23:33:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:24,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 606 [2021-11-20 23:33:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:24,684 INFO L225 Difference]: With dead ends: 18156 [2021-11-20 23:33:24,684 INFO L226 Difference]: Without dead ends: 11264 [2021-11-20 23:33:24,727 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 [2021-11-20 23:33:24,732 INFO L933 BasicCegarLoop]: 2478 mSDtfsCounter, 1561 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:24,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 4008 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-20 23:33:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2021-11-20 23:33:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 11252. [2021-11-20 23:33:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 7389 states have (on average 1.3629719853836784) internal successors, (10071), 7556 states have internal predecessors, (10071), 2912 states have call successors, (2912), 951 states have call predecessors, (2912), 950 states have return successors, (2950), 2888 states have call predecessors, (2950), 2910 states have call successors, (2950) [2021-11-20 23:33:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 15933 transitions. [2021-11-20 23:33:25,358 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 15933 transitions. Word has length 606 [2021-11-20 23:33:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:25,360 INFO L470 AbstractCegarLoop]: Abstraction has 11252 states and 15933 transitions. [2021-11-20 23:33:25,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-20 23:33:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 15933 transitions. [2021-11-20 23:33:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2021-11-20 23:33:25,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:25,374 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 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] [2021-11-20 23:33:25,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:33:25,374 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash -46633801, now seen corresponding path program 1 times [2021-11-20 23:33:25,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:25,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735399172] [2021-11-20 23:33:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:25,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-11-20 23:33:25,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735399172] [2021-11-20 23:33:25,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735399172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:25,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:25,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:33:25,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515877687] [2021-11-20 23:33:25,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:25,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:33:25,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:33:25,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:33:25,913 INFO L87 Difference]: Start difference. First operand 11252 states and 15933 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-20 23:33:27,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:28,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:35,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:36,823 INFO L93 Difference]: Finished difference Result 22414 states and 31731 transitions. [2021-11-20 23:33:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:33:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 605 [2021-11-20 23:33:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:36,916 INFO L225 Difference]: With dead ends: 22414 [2021-11-20 23:33:36,916 INFO L226 Difference]: Without dead ends: 11263 [2021-11-20 23:33:36,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:36,973 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 8 mSDsluCounter, 3515 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:36,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4679 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-20 23:33:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-11-20 23:33:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 11254. [2021-11-20 23:33:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11254 states, 7391 states have (on average 1.3624678663239074) internal successors, (10070), 7558 states have internal predecessors, (10070), 2912 states have call successors, (2912), 951 states have call predecessors, (2912), 950 states have return successors, (2950), 2888 states have call predecessors, (2950), 2910 states have call successors, (2950) [2021-11-20 23:33:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 15932 transitions. [2021-11-20 23:33:37,470 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 15932 transitions. Word has length 605 [2021-11-20 23:33:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:37,472 INFO L470 AbstractCegarLoop]: Abstraction has 11254 states and 15932 transitions. [2021-11-20 23:33:37,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-20 23:33:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 15932 transitions. [2021-11-20 23:33:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-20 23:33:37,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:37,557 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 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] [2021-11-20 23:33:37,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:33:37,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1026928469, now seen corresponding path program 1 times [2021-11-20 23:33:37,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:37,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705126114] [2021-11-20 23:33:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:37,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-11-20 23:33:38,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705126114] [2021-11-20 23:33:38,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705126114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:38,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:38,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:38,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774793858] [2021-11-20 23:33:38,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:38,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:38,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:38,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:38,071 INFO L87 Difference]: Start difference. First operand 11254 states and 15932 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-20 23:33:39,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:41,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:44,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:46,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:47,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:52,025 INFO L93 Difference]: Finished difference Result 22436 states and 31753 transitions. [2021-11-20 23:33:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:33:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 617 [2021-11-20 23:33:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:52,086 INFO L225 Difference]: With dead ends: 22436 [2021-11-20 23:33:52,086 INFO L226 Difference]: Without dead ends: 11274 [2021-11-20 23:33:52,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:33:52,127 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 13 mSDsluCounter, 5272 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:52,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 6242 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2021-11-20 23:33:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2021-11-20 23:33:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 11261. [2021-11-20 23:33:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11261 states, 7395 states have (on average 1.3614604462474644) internal successors, (10068), 7564 states have internal predecessors, (10068), 2915 states have call successors, (2915), 951 states have call predecessors, (2915), 950 states have return successors, (2953), 2889 states have call predecessors, (2953), 2913 states have call successors, (2953) [2021-11-20 23:33:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 15936 transitions. [2021-11-20 23:33:52,676 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 15936 transitions. Word has length 617 [2021-11-20 23:33:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:52,677 INFO L470 AbstractCegarLoop]: Abstraction has 11261 states and 15936 transitions. [2021-11-20 23:33:52,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-20 23:33:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 15936 transitions. [2021-11-20 23:33:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-11-20 23:33:52,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:52,691 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 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] [2021-11-20 23:33:52,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:33:52,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1625755762, now seen corresponding path program 1 times [2021-11-20 23:33:52,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:52,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893194671] [2021-11-20 23:33:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:52,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5562 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-11-20 23:33:53,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:53,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893194671] [2021-11-20 23:33:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893194671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:53,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:53,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830349359] [2021-11-20 23:33:53,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:53,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:53,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:53,163 INFO L87 Difference]: Start difference. First operand 11261 states and 15936 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-20 23:33:55,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:58,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:01,502 INFO L93 Difference]: Finished difference Result 22434 states and 31739 transitions. [2021-11-20 23:34:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:34:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 613 [2021-11-20 23:34:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:01,565 INFO L225 Difference]: With dead ends: 22434 [2021-11-20 23:34:01,566 INFO L226 Difference]: Without dead ends: 11259 [2021-11-20 23:34:01,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:34:01,607 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 13 mSDsluCounter, 5266 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:01,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 6237 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 809 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 23:34:01,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2021-11-20 23:34:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 11229. [2021-11-20 23:34:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 7376 states have (on average 1.3619848156182213) internal successors, (10046), 7543 states have internal predecessors, (10046), 2907 states have call successors, (2907), 946 states have call predecessors, (2907), 945 states have return successors, (2945), 2883 states have call predecessors, (2945), 2905 states have call successors, (2945) [2021-11-20 23:34:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 15898 transitions. [2021-11-20 23:34:02,045 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 15898 transitions. Word has length 613 [2021-11-20 23:34:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:02,047 INFO L470 AbstractCegarLoop]: Abstraction has 11229 states and 15898 transitions. [2021-11-20 23:34:02,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-20 23:34:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 15898 transitions. [2021-11-20 23:34:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-20 23:34:02,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:02,062 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 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] [2021-11-20 23:34:02,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:34:02,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:34:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -681865092, now seen corresponding path program 1 times [2021-11-20 23:34:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:02,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497936858] [2021-11-20 23:34:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:02,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2021-11-20 23:34:02,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:02,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497936858] [2021-11-20 23:34:02,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497936858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:02,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:02,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:34:02,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357710082] [2021-11-20 23:34:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:02,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:34:02,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:34:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:34:02,673 INFO L87 Difference]: Start difference. First operand 11229 states and 15898 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-20 23:34:04,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:06,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:09,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:12,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:14,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:15,387 INFO L93 Difference]: Finished difference Result 22534 states and 31938 transitions. [2021-11-20 23:34:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:34:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) Word has length 617 [2021-11-20 23:34:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:15,447 INFO L225 Difference]: With dead ends: 22534 [2021-11-20 23:34:15,447 INFO L226 Difference]: Without dead ends: 11412 [2021-11-20 23:34:15,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:34:15,484 INFO L933 BasicCegarLoop]: 1760 mSDtfsCounter, 1925 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 5044 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:15,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 5044 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 716 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2021-11-20 23:34:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2021-11-20 23:34:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 11235. [2021-11-20 23:34:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11235 states, 7382 states have (on average 1.3612842048225413) internal successors, (10049), 7549 states have internal predecessors, (10049), 2907 states have call successors, (2907), 946 states have call predecessors, (2907), 945 states have return successors, (2945), 2883 states have call predecessors, (2945), 2905 states have call successors, (2945) [2021-11-20 23:34:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11235 states to 11235 states and 15901 transitions. [2021-11-20 23:34:16,090 INFO L78 Accepts]: Start accepts. Automaton has 11235 states and 15901 transitions. Word has length 617 [2021-11-20 23:34:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:16,091 INFO L470 AbstractCegarLoop]: Abstraction has 11235 states and 15901 transitions. [2021-11-20 23:34:16,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 4 states have call predecessors, (59), 4 states have call successors, (59) [2021-11-20 23:34:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 11235 states and 15901 transitions. [2021-11-20 23:34:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-11-20 23:34:16,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:16,104 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 23, 23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:34:16,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:34:16,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:34:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1845097853, now seen corresponding path program 1 times [2021-11-20 23:34:16,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:16,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605606318] [2021-11-20 23:34:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:16,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2021-11-20 23:34:16,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605606318] [2021-11-20 23:34:16,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605606318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:34:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175252877] [2021-11-20 23:34:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:16,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:34:16,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:34:16,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:34:16,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_581d2f66-6600-4e75-9e6c-2eae847ff820/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:34:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:18,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 5340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:34:18,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:34:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 537 proven. 1 refuted. 0 times theorem prover too weak. 5031 trivial. 0 not checked. [2021-11-20 23:34:20,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:34:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5569 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5557 trivial. 0 not checked. [2021-11-20 23:34:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175252877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:34:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1086204110] [2021-11-20 23:34:22,019 INFO L159 IcfgInterpreter]: Started Sifa with 196 locations of interest [2021-11-20 23:34:22,019 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:34:22,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:34:22,028 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:34:22,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:34:26,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:26,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 77 select indices, 77 select index equivalence classes, 249 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 808 [2021-11-20 23:34:31,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:34:32,385 INFO L244 Elim1Store]: Index analysis took 1843 ms [2021-11-20 23:40:45,368 WARN L227 SmtUtils]: Spent 6.21m on a formula simplification. DAG size of input: 5660 DAG size of output: 1923 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:40:45,381 INFO L354 Elim1Store]: treesize reduction 70705, result has 6.7 percent of original size [2021-11-20 23:40:45,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 64 select indices, 64 select index equivalence classes, 2058 disjoint index pairs (out of 2016 index pairs), introduced 64 new quantified variables, introduced 85 case distinctions, treesize of input 393 treesize of output 5264