./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--md--dm-multipath.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_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/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_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/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_05c5d2c0-4230-4919-b9eb-621036dfb796/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 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:51:36,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:51:36,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:51:36,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:51:36,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:51:36,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:51:36,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:51:36,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:51:36,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:51:37,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:51:37,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:51:37,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:51:37,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:51:37,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:51:37,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:51:37,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:51:37,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:51:37,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:51:37,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:51:37,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:51:37,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:51:37,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:51:37,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:51:37,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:51:37,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:51:37,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:51:37,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:51:37,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:51:37,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:51:37,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:51:37,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:51:37,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:51:37,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:51:37,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:51:37,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:51:37,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:51:37,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:51:37,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:51:37,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:51:37,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:51:37,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:51:37,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 22:51:37,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:51:37,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:51:37,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:51:37,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:51:37,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:51:37,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:51:37,126 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:51:37,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:51:37,127 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:51:37,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:51:37,127 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:51:37,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:51:37,127 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:51:37,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:51:37,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:51:37,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:51:37,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:51:37,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:51:37,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:51:37,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:51:37,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:51:37,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:51:37,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:51:37,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:51:37,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:37,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:51:37,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:51:37,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:51:37,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:51:37,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:51:37,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:51:37,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:51:37,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:51:37,133 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_05c5d2c0-4230-4919-b9eb-621036dfb796/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-20 22:51:37,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:51:37,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:51:37,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:51:37,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:51:37,507 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:51:37,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-20 22:51:37,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/data/a12ea195a/8cedd6bdb9d649029aaf90c1024eeff3/FLAG8c916781f [2021-11-20 22:51:38,476 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:51:38,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-20 22:51:38,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/data/a12ea195a/8cedd6bdb9d649029aaf90c1024eeff3/FLAG8c916781f [2021-11-20 22:51:38,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/data/a12ea195a/8cedd6bdb9d649029aaf90c1024eeff3 [2021-11-20 22:51:38,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:51:38,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:51:38,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:38,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:51:38,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:51:38,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:38" (1/1) ... [2021-11-20 22:51:38,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4e028e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:38, skipping insertion in model container [2021-11-20 22:51:38,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:38" (1/1) ... [2021-11-20 22:51:38,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:51:38,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:51:40,833 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_05c5d2c0-4230-4919-b9eb-621036dfb796/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-20 22:51:40,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:40,944 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:51:41,400 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_05c5d2c0-4230-4919-b9eb-621036dfb796/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-20 22:51:41,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:41,561 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:51:41,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41 WrapperNode [2021-11-20 22:51:41,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:41,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:41,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:51:41,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:51:41,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,794 INFO L137 Inliner]: procedures = 258, calls = 1568, calls flagged for inlining = 102, calls inlined = 102, statements flattened = 4328 [2021-11-20 22:51:41,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:41,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:51:41,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:51:41,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:51:41,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:41,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:42,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:42,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:42,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:51:42,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:51:42,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:51:42,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:51:42,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (1/1) ... [2021-11-20 22:51:42,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:42,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:51:42,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:51:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2021-11-20 22:51:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2021-11-20 22:51:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-11-20 22:51:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-11-20 22:51:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-20 22:51:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure queue_if_no_path [2021-11-20 22:51:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_if_no_path [2021-11-20 22:51:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 22:51:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 22:51:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 22:51:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 22:51:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_message [2021-11-20 22:51:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_message [2021-11-20 22:51:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_end_io [2021-11-20 22:51:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_end_io [2021-11-20 22:51:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-20 22:51:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-20 22:51:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 22:51:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 22:51:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 22:51:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 22:51:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-20 22:51:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-20 22:51:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure bypass_pg_num [2021-11-20 22:51:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure bypass_pg_num [2021-11-20 22:51:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-20 22:51:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-20 22:51:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-20 22:51:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-20 22:51:42,175 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_clone_and_map [2021-11-20 22:51:42,175 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_clone_and_map [2021-11-20 22:51:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-20 22:51:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-20 22:51:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_iterate_devices [2021-11-20 22:51:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_iterate_devices [2021-11-20 22:51:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 22:51:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 22:51:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 22:51:42,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 22:51:42,177 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-20 22:51:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-20 22:51:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 22:51:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 22:51:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-20 22:51:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-20 22:51:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 22:51:42,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 22:51:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dh_detach [2021-11-20 22:51:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dh_detach [2021-11-20 22:51:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure dm_read_arg_group [2021-11-20 22:51:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_read_arg_group [2021-11-20 22:51:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_path_selector [2021-11-20 22:51:42,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_path_selector [2021-11-20 22:51:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 22:51:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 22:51:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dh_handler_exist [2021-11-20 22:51:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dh_handler_exist [2021-11-20 22:51:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 22:51:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 22:51:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ioctl [2021-11-20 22:51:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ioctl [2021-11-20 22:51:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure clear_mapinfo [2021-11-20 22:51:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_mapinfo [2021-11-20 22:51:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure dm_unregister_target [2021-11-20 22:51:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_unregister_target [2021-11-20 22:51:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-20 22:51:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-20 22:51:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:51:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 22:51:42,185 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 22:51:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-20 22:51:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-20 22:51:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 22:51:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure __must_push_back [2021-11-20 22:51:42,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __must_push_back [2021-11-20 22:51:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 22:51:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 22:51:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-20 22:51:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-20 22:51:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 22:51:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 22:51:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 22:51:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 22:51:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure get_path_selector [2021-11-20 22:51:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure get_path_selector [2021-11-20 22:51:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-20 22:51:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-20 22:51:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:51:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_release_clone [2021-11-20 22:51:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_release_clone [2021-11-20 22:51:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 22:51:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure bypass_pg [2021-11-20 22:51:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure bypass_pg [2021-11-20 22:51:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_event [2021-11-20 22:51:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_event [2021-11-20 22:51:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 22:51:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 22:51:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 22:51:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 22:51:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-20 22:51:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-20 22:51:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure free_pgpath [2021-11-20 22:51:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pgpath [2021-11-20 22:51:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 22:51:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 22:51:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure __choose_path_in_pg [2021-11-20 22:51:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __choose_path_in_pg [2021-11-20 22:51:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 22:51:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 22:51:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure activate_path [2021-11-20 22:51:42,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_path [2021-11-20 22:51:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~status_type_t~0~X~$Pointer$~X~int~TO~int [2021-11-20 22:51:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~status_type_t~0~X~$Pointer$~X~int~TO~int [2021-11-20 22:51:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure flush_multipath_work [2021-11-20 22:51:42,199 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_multipath_work [2021-11-20 22:51:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 22:51:42,200 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 22:51:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dh_attach [2021-11-20 22:51:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dh_attach [2021-11-20 22:51:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-20 22:51:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-20 22:51:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_run_md_queue_async [2021-11-20 22:51:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_run_md_queue_async [2021-11-20 22:51:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2021-11-20 22:51:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2021-11-20 22:51:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_postsuspend [2021-11-20 22:51:42,210 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_postsuspend [2021-11-20 22:51:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure fail_path [2021-11-20 22:51:42,210 INFO L138 BoogieDeclarations]: Found implementation of procedure fail_path [2021-11-20 22:51:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:51:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_map [2021-11-20 22:51:42,210 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_map [2021-11-20 22:51:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 22:51:42,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 22:51:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 22:51:42,211 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 22:51:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:51:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 22:51:42,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 22:51:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 22:51:42,211 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 22:51:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 22:51:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 22:51:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure dm_read_arg [2021-11-20 22:51:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_read_arg [2021-11-20 22:51:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2021-11-20 22:51:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2021-11-20 22:51:42,212 INFO L130 BoogieDeclarations]: Found specification of procedure __choose_pgpath [2021-11-20 22:51:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __choose_pgpath [2021-11-20 22:51:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 22:51:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 22:51:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 22:51:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure dm_path_uevent [2021-11-20 22:51:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_path_uevent [2021-11-20 22:51:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-20 22:51:42,214 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-20 22:51:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-20 22:51:42,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-20 22:51:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:51:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 22:51:42,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 22:51:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 22:51:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 22:51:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-20 22:51:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-20 22:51:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 22:51:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 22:51:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure __pg_init_all_paths [2021-11-20 22:51:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __pg_init_all_paths [2021-11-20 22:51:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-20 22:51:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2021-11-20 22:51:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_presuspend [2021-11-20 22:51:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_presuspend [2021-11-20 22:51:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure dm_consume_args [2021-11-20 22:51:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_consume_args [2021-11-20 22:51:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure dm_shift_arg [2021-11-20 22:51:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_shift_arg [2021-11-20 22:51:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 22:51:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 22:51:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-20 22:51:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-20 22:51:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure __multipath_map [2021-11-20 22:51:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __multipath_map [2021-11-20 22:51:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 22:51:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 22:51:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2021-11-20 22:51:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2021-11-20 22:51:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_status [2021-11-20 22:51:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_status [2021-11-20 22:51:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-20 22:51:42,219 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-20 22:51:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_busy [2021-11-20 22:51:42,219 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_busy [2021-11-20 22:51:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 22:51:42,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 22:51:42,219 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-20 22:51:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure __find_path_selector_type [2021-11-20 22:51:42,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_path_selector_type [2021-11-20 22:51:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-20 22:51:42,220 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-20 22:51:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_resume [2021-11-20 22:51:42,220 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_resume [2021-11-20 22:51:42,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:51:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-20 22:51:42,221 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-20 22:51:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2021-11-20 22:51:42,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2021-11-20 22:51:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:51:42,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:51:42,221 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 22:51:42,222 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 22:51:43,110 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:51:43,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:51:43,255 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 22:51:47,329 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:51:48,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:51:48,567 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 22:51:48,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:48 BoogieIcfgContainer [2021-11-20 22:51:48,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:51:48,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:51:48,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:51:48,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:51:48,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:51:38" (1/3) ... [2021-11-20 22:51:48,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c73ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:48, skipping insertion in model container [2021-11-20 22:51:48,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:41" (2/3) ... [2021-11-20 22:51:48,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c73ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:48, skipping insertion in model container [2021-11-20 22:51:48,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:48" (3/3) ... [2021-11-20 22:51:48,584 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-20 22:51:48,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:51:48,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:51:48,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:51:48,682 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 22:51:48,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:51:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 1314 states, 828 states have (on average 1.3731884057971016) internal successors, (1137), 855 states have internal predecessors, (1137), 387 states have call successors, (387), 98 states have call predecessors, (387), 97 states have return successors, (382), 375 states have call predecessors, (382), 382 states have call successors, (382) [2021-11-20 22:51:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-20 22:51:48,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:48,817 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:48,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash -812839640, now seen corresponding path program 1 times [2021-11-20 22:51:48,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:48,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264854565] [2021-11-20 22:51:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:48,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2021-11-20 22:51:49,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:49,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264854565] [2021-11-20 22:51:49,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264854565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:49,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:49,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267625266] [2021-11-20 22:51:49,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:49,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:49,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:50,039 INFO L87 Difference]: Start difference. First operand has 1314 states, 828 states have (on average 1.3731884057971016) internal successors, (1137), 855 states have internal predecessors, (1137), 387 states have call successors, (387), 98 states have call predecessors, (387), 97 states have return successors, (382), 375 states have call predecessors, (382), 382 states have call successors, (382) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 22:51:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:53,206 INFO L93 Difference]: Finished difference Result 3834 states and 5611 transitions. [2021-11-20 22:51:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:53,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 247 [2021-11-20 22:51:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:53,259 INFO L225 Difference]: With dead ends: 3834 [2021-11-20 22:51:53,259 INFO L226 Difference]: Without dead ends: 2540 [2021-11-20 22:51:53,276 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 22:51:53,280 INFO L933 BasicCegarLoop]: 2093 mSDtfsCounter, 1830 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:53,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 3758 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 22:51:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-11-20 22:51:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2536. [2021-11-20 22:51:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 1613 states have (on average 1.3707377557346558) internal successors, (2211), 1653 states have internal predecessors, (2211), 732 states have call successors, (732), 192 states have call predecessors, (732), 190 states have return successors, (735), 714 states have call predecessors, (735), 730 states have call successors, (735) [2021-11-20 22:51:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 3678 transitions. [2021-11-20 22:51:53,558 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 3678 transitions. Word has length 247 [2021-11-20 22:51:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:53,566 INFO L470 AbstractCegarLoop]: Abstraction has 2536 states and 3678 transitions. [2021-11-20 22:51:53,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 22:51:53,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 3678 transitions. [2021-11-20 22:51:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-20 22:51:53,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:53,592 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:53,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:51:53,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash -370298333, now seen corresponding path program 1 times [2021-11-20 22:51:53,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:53,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049361506] [2021-11-20 22:51:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:53,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2021-11-20 22:51:54,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:54,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049361506] [2021-11-20 22:51:54,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049361506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:54,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:54,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:54,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633787548] [2021-11-20 22:51:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:54,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:54,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:54,044 INFO L87 Difference]: Start difference. First operand 2536 states and 3678 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 22:51:55,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:51:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:58,029 INFO L93 Difference]: Finished difference Result 5492 states and 7930 transitions. [2021-11-20 22:51:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:58,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 298 [2021-11-20 22:51:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:58,061 INFO L225 Difference]: With dead ends: 5492 [2021-11-20 22:51:58,062 INFO L226 Difference]: Without dead ends: 3003 [2021-11-20 22:51:58,081 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 22:51:58,083 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 397 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:58,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3265 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 22:51:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2021-11-20 22:51:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 2997. [2021-11-20 22:51:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 1913 states have (on average 1.3727130162049137) internal successors, (2626), 1966 states have internal predecessors, (2626), 842 states have call successors, (842), 243 states have call predecessors, (842), 241 states have return successors, (845), 823 states have call predecessors, (845), 840 states have call successors, (845) [2021-11-20 22:51:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4313 transitions. [2021-11-20 22:51:58,263 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4313 transitions. Word has length 298 [2021-11-20 22:51:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:58,264 INFO L470 AbstractCegarLoop]: Abstraction has 2997 states and 4313 transitions. [2021-11-20 22:51:58,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 22:51:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4313 transitions. [2021-11-20 22:51:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-20 22:51:58,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:58,282 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-20 22:51:58,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:51:58,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1945953974, now seen corresponding path program 1 times [2021-11-20 22:51:58,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:58,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833211309] [2021-11-20 22:51:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:58,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2021-11-20 22:51:58,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833211309] [2021-11-20 22:51:58,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833211309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:58,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:58,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:58,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6044963] [2021-11-20 22:51:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:58,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:58,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:58,669 INFO L87 Difference]: Start difference. First operand 2997 states and 4313 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-20 22:52:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:03,644 INFO L93 Difference]: Finished difference Result 5953 states and 8569 transitions. [2021-11-20 22:52:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:52:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 327 [2021-11-20 22:52:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:03,675 INFO L225 Difference]: With dead ends: 5953 [2021-11-20 22:52:03,676 INFO L226 Difference]: Without dead ends: 3008 [2021-11-20 22:52:03,696 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 22:52:03,702 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 10 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:03,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 5131 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 22:52:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-20 22:52:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3000. [2021-11-20 22:52:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 1916 states have (on average 1.3710855949895615) internal successors, (2627), 1969 states have internal predecessors, (2627), 842 states have call successors, (842), 243 states have call predecessors, (842), 241 states have return successors, (845), 823 states have call predecessors, (845), 840 states have call successors, (845) [2021-11-20 22:52:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 4314 transitions. [2021-11-20 22:52:03,872 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 4314 transitions. Word has length 327 [2021-11-20 22:52:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:03,877 INFO L470 AbstractCegarLoop]: Abstraction has 3000 states and 4314 transitions. [2021-11-20 22:52:03,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-20 22:52:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 4314 transitions. [2021-11-20 22:52:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-20 22:52:03,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:03,894 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-20 22:52:03,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:52:03,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1532041720, now seen corresponding path program 1 times [2021-11-20 22:52:03,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:03,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238894171] [2021-11-20 22:52:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:03,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2021-11-20 22:52:04,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238894171] [2021-11-20 22:52:04,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238894171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502365570] [2021-11-20 22:52:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:04,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:04,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:04,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:04,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:52:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:06,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 22:52:06,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2021-11-20 22:52:07,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:52:07,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502365570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:07,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:52:07,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-11-20 22:52:07,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121802626] [2021-11-20 22:52:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:07,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:52:07,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:07,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:52:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 22:52:07,354 INFO L87 Difference]: Start difference. First operand 3000 states and 4314 transitions. Second operand has 6 states, 4 states have (on average 26.0) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-20 22:52:09,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:11,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:18,034 INFO L93 Difference]: Finished difference Result 5974 states and 8624 transitions. [2021-11-20 22:52:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:52:18,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 26.0) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 330 [2021-11-20 22:52:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:18,068 INFO L225 Difference]: With dead ends: 5974 [2021-11-20 22:52:18,068 INFO L226 Difference]: Without dead ends: 3003 [2021-11-20 22:52:18,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:52:18,097 INFO L933 BasicCegarLoop]: 1703 mSDtfsCounter, 3 mSDsluCounter, 7480 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8492 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:18,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8492 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-20 22:52:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2021-11-20 22:52:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3003. [2021-11-20 22:52:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 1919 states have (on average 1.3705054715997915) internal successors, (2630), 1972 states have internal predecessors, (2630), 842 states have call successors, (842), 243 states have call predecessors, (842), 241 states have return successors, (845), 823 states have call predecessors, (845), 840 states have call successors, (845) [2021-11-20 22:52:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4317 transitions. [2021-11-20 22:52:18,296 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4317 transitions. Word has length 330 [2021-11-20 22:52:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:18,297 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 4317 transitions. [2021-11-20 22:52:18,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 26.0) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-20 22:52:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4317 transitions. [2021-11-20 22:52:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-20 22:52:18,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:18,316 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 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] [2021-11-20 22:52:18,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:18,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:18,534 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash -309954416, now seen corresponding path program 1 times [2021-11-20 22:52:18,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879544684] [2021-11-20 22:52:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2021-11-20 22:52:18,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879544684] [2021-11-20 22:52:18,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879544684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740319748] [2021-11-20 22:52:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:18,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:18,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:19,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 22:52:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 3375 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 22:52:20,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2021-11-20 22:52:21,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:52:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2021-11-20 22:52:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740319748] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:22,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:52:22,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2021-11-20 22:52:22,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120224421] [2021-11-20 22:52:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:52:22,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:52:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:52:22,662 INFO L87 Difference]: Start difference. First operand 3003 states and 4317 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-20 22:52:24,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:26,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:31,838 INFO L93 Difference]: Finished difference Result 5961 states and 8623 transitions. [2021-11-20 22:52:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:52:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 339 [2021-11-20 22:52:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:31,870 INFO L225 Difference]: With dead ends: 5961 [2021-11-20 22:52:31,870 INFO L226 Difference]: Without dead ends: 3017 [2021-11-20 22:52:31,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:52:31,895 INFO L933 BasicCegarLoop]: 1717 mSDtfsCounter, 2 mSDsluCounter, 5667 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6862 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:31,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6862 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 705 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-20 22:52:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2021-11-20 22:52:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3011. [2021-11-20 22:52:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 1925 states have (on average 1.3693506493506493) internal successors, (2636), 1978 states have internal predecessors, (2636), 842 states have call successors, (842), 243 states have call predecessors, (842), 243 states have return successors, (853), 825 states have call predecessors, (853), 840 states have call successors, (853) [2021-11-20 22:52:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4331 transitions. [2021-11-20 22:52:32,078 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4331 transitions. Word has length 339 [2021-11-20 22:52:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:32,078 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 4331 transitions. [2021-11-20 22:52:32,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-20 22:52:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4331 transitions. [2021-11-20 22:52:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-20 22:52:32,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:32,097 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 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] [2021-11-20 22:52:32,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:32,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:32,314 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -880077521, now seen corresponding path program 1 times [2021-11-20 22:52:32,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093186884] [2021-11-20 22:52:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:32,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2021-11-20 22:52:32,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093186884] [2021-11-20 22:52:32,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093186884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:52:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325268439] [2021-11-20 22:52:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:32,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:32,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:32,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05c5d2c0-4230-4919-b9eb-621036dfb796/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 22:52:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 22:52:35,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 200 proven. 1 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2021-11-20 22:52:36,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:52:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2021-11-20 22:52:37,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325268439] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:52:37,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5397104] [2021-11-20 22:52:38,010 INFO L159 IcfgInterpreter]: Started Sifa with 149 locations of interest [2021-11-20 22:52:38,011 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:52:38,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:52:38,023 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:52:38,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:52:44,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 22:52:44,723 INFO L244 Elim1Store]: Index analysis took 1186 ms [2021-11-20 22:55:25,701 WARN L227 SmtUtils]: Spent 2.68m on a formula simplification. DAG size of input: 3483 DAG size of output: 1377 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 22:55:25,715 INFO L354 Elim1Store]: treesize reduction 20214, result has 13.6 percent of original size [2021-11-20 22:55:25,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 99 select indices, 99 select index equivalence classes, 4866 disjoint index pairs (out of 4851 index pairs), introduced 99 new quantified variables, introduced 106 case distinctions, treesize of input 526 treesize of output 3500