./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.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_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/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_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/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_73a796d9-bce7-48b0-87df-638ac86ac317/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 f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:57:47,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:57:47,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:57:47,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:57:47,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:57:47,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:57:47,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:57:47,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:57:47,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:57:47,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:57:47,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:57:47,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:57:47,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:57:47,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:57:47,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:57:47,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:57:47,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:57:47,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:57:47,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:57:47,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:57:47,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:57:47,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:57:47,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:57:47,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:57:47,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:57:47,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:57:47,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:57:47,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:57:47,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:57:47,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:57:47,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:57:47,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:57:47,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:57:47,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:57:47,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:57:47,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:57:47,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:57:47,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:57:47,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:57:47,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:57:47,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:57:47,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:57:47,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:57:47,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:57:47,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:57:47,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:57:47,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:57:47,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:57:47,684 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:57:47,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:57:47,684 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:57:47,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:57:47,685 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:57:47,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:57:47,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:57:47,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:57:47,686 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:57:47,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:57:47,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:57:47,687 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:57:47,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:57:47,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:57:47,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:57:47,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:57:47,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:57:47,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:57:47,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:57:47,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:57:47,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:57:47,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:57:47,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:57:47,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:47,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:57:47,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:57:47,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:57:47,692 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:57:47,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:57:47,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:57:47,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:57:47,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:57:47,693 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_73a796d9-bce7-48b0-87df-638ac86ac317/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2021-11-21 01:57:47,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:57:48,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:57:48,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:57:48,026 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:57:48,026 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:57:48,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-21 01:57:48,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/data/6a4e2e807/0b52d923bd2e4c7b895880c03bb8ba0a/FLAG23bd54e70 [2021-11-21 01:57:48,958 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:57:48,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-21 01:57:49,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/data/6a4e2e807/0b52d923bd2e4c7b895880c03bb8ba0a/FLAG23bd54e70 [2021-11-21 01:57:49,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/data/6a4e2e807/0b52d923bd2e4c7b895880c03bb8ba0a [2021-11-21 01:57:49,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:57:49,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:57:49,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:49,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:57:49,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:57:49,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:49" (1/1) ... [2021-11-21 01:57:49,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10845e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:49, skipping insertion in model container [2021-11-21 01:57:49,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:49" (1/1) ... [2021-11-21 01:57:49,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:57:49,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:57:51,046 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_73a796d9-bce7-48b0-87df-638ac86ac317/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2021-11-21 01:57:51,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:51,162 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:57:51,485 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_73a796d9-bce7-48b0-87df-638ac86ac317/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2021-11-21 01:57:51,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:51,754 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:57:51,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51 WrapperNode [2021-11-21 01:57:51,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:51,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:51,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:57:51,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:57:51,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:51,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,021 INFO L137 Inliner]: procedures = 200, calls = 1489, calls flagged for inlining = 98, calls inlined = 84, statements flattened = 3293 [2021-11-21 01:57:52,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:52,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:57:52,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:57:52,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:57:52,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:57:52,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:57:52,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:57:52,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:57:52,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:52,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:52,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:57:52,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:57:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:57:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:57:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:57:52,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:57:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:57:52,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:57:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:57:52,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:57:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:57:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:57:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-21 01:57:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-21 01:57:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:57:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:57:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:57:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:57:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-21 01:57:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-21 01:57:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:57:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:57:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-21 01:57:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-21 01:57:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:57:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:57:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:57:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:57:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:57:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:57:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:57:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:57:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 01:57:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 01:57:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-21 01:57:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-21 01:57:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:57:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:57:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-21 01:57:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-21 01:57:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:57:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:57:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:57:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:57:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:57:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:57:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:57:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:57:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-21 01:57:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-21 01:57:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:57:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:57:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2021-11-21 01:57:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2021-11-21 01:57:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:57:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:57:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-21 01:57:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-21 01:57:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2021-11-21 01:57:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2021-11-21 01:57:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:57:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:57:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:57:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:57:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:57:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:57:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:57:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:57:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:57:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:57:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:57:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-21 01:57:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-21 01:57:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:57:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:57:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2021-11-21 01:57:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2021-11-21 01:57:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:57:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:57:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:57:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:57:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:57:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:57:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:57:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2021-11-21 01:57:52,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2021-11-21 01:57:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:57:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 01:57:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 01:57:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:57:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2021-11-21 01:57:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2021-11-21 01:57:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:57:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 01:57:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 01:57:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2021-11-21 01:57:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2021-11-21 01:57:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2021-11-21 01:57:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2021-11-21 01:57:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:57:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:57:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:57:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:57:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 01:57:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 01:57:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-11-21 01:57:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-11-21 01:57:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 01:57:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 01:57:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:57:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:57:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:57:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:57:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-21 01:57:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-21 01:57:52,397 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2021-11-21 01:57:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2021-11-21 01:57:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:57:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-21 01:57:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-21 01:57:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-21 01:57:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-21 01:57:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-21 01:57:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-21 01:57:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-21 01:57:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-21 01:57:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:57:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:57:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:57:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:57:53,040 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:57:53,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:57:53,776 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,783 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,794 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,795 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,797 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,798 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:53,808 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:57:55,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2021-11-21 01:57:55,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2021-11-21 01:57:55,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##265: assume !false; [2021-11-21 01:57:55,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##264: assume false; [2021-11-21 01:57:55,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2021-11-21 01:57:55,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2021-11-21 01:57:55,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume !false; [2021-11-21 01:57:55,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##227: assume false; [2021-11-21 01:57:55,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume !false;call ULTIMATE.dealloc(fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset);havoc fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset;call ULTIMATE.dealloc(fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset);havoc fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset; [2021-11-21 01:57:55,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume false; [2021-11-21 01:57:55,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-11-21 01:57:55,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-11-21 01:57:55,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##391: assume !false; [2021-11-21 01:57:55,996 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##390: assume false; [2021-11-21 01:57:56,073 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:57:56,696 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:57:56,696 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:57:56,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:56 BoogieIcfgContainer [2021-11-21 01:57:56,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:57:56,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:57:56,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:57:56,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:57:56,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:57:49" (1/3) ... [2021-11-21 01:57:56,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451a6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:56, skipping insertion in model container [2021-11-21 01:57:56,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (2/3) ... [2021-11-21 01:57:56,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451a6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:56, skipping insertion in model container [2021-11-21 01:57:56,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:56" (3/3) ... [2021-11-21 01:57:56,712 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-21 01:57:56,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:57:56,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:57:56,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:57:56,819 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:57:56,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:57:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2021-11-21 01:57:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:57:56,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:56,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:56,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1634586507, now seen corresponding path program 1 times [2021-11-21 01:57:56,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:56,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628928972] [2021-11-21 01:57:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:56,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:57,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628928972] [2021-11-21 01:57:57,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628928972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:57,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:57,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:57:57,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624129927] [2021-11-21 01:57:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:57,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:57:57,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:57:57,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:57,416 INFO L87 Difference]: Start difference. First operand has 821 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 511 states have internal predecessors, (656), 260 states have call successors, (260), 56 states have call predecessors, (260), 56 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:59,025 INFO L93 Difference]: Finished difference Result 1640 states and 2353 transitions. [2021-11-21 01:57:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:57:59,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-21 01:57:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:59,059 INFO L225 Difference]: With dead ends: 1640 [2021-11-21 01:57:59,059 INFO L226 Difference]: Without dead ends: 819 [2021-11-21 01:57:59,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:57:59,077 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 0 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:59,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2081 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:57:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-21 01:57:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-11-21 01:57:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 503 states have (on average 1.3001988071570576) internal successors, (654), 509 states have internal predecessors, (654), 260 states have call successors, (260), 56 states have call predecessors, (260), 55 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2021-11-21 01:57:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1172 transitions. [2021-11-21 01:57:59,265 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1172 transitions. Word has length 15 [2021-11-21 01:57:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:59,266 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1172 transitions. [2021-11-21 01:57:59,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1172 transitions. [2021-11-21 01:57:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:57:59,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:59,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:59,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:57:59,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1239223528, now seen corresponding path program 1 times [2021-11-21 01:57:59,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:59,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562238113] [2021-11-21 01:57:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:59,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:57:59,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:59,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562238113] [2021-11-21 01:57:59,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562238113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:57:59,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926305785] [2021-11-21 01:57:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:59,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:59,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:59,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:57:59,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:57:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:59,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:57:59,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:58:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:58:00,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:58:00,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926305785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:00,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:58:00,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-21 01:58:00,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414167306] [2021-11-21 01:58:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:00,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:00,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:00,006 INFO L87 Difference]: Start difference. First operand 819 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:58:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:01,445 INFO L93 Difference]: Finished difference Result 2373 states and 3389 transitions. [2021-11-21 01:58:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-21 01:58:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:01,458 INFO L225 Difference]: With dead ends: 2373 [2021-11-21 01:58:01,458 INFO L226 Difference]: Without dead ends: 1559 [2021-11-21 01:58:01,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:01,462 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 1051 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:01,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2405 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 01:58:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-11-21 01:58:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1555. [2021-11-21 01:58:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 954 states have (on average 1.29874213836478) internal successors, (1239), 965 states have internal predecessors, (1239), 490 states have call successors, (490), 111 states have call predecessors, (490), 110 states have return successors, (488), 487 states have call predecessors, (488), 488 states have call successors, (488) [2021-11-21 01:58:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2217 transitions. [2021-11-21 01:58:01,578 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2217 transitions. Word has length 16 [2021-11-21 01:58:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:01,579 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2217 transitions. [2021-11-21 01:58:01,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:58:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2217 transitions. [2021-11-21 01:58:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 01:58:01,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:01,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:01,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:58:01,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:58:01,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1150068244, now seen corresponding path program 1 times [2021-11-21 01:58:01,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:01,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429483549] [2021-11-21 01:58:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:01,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:01,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:01,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429483549] [2021-11-21 01:58:01,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429483549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:58:01,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254219236] [2021-11-21 01:58:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:01,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:58:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:58:01,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:58:01,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:58:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:58:02,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:58:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:02,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:58:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:02,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254219236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:58:02,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1161168997] [2021-11-21 01:58:02,640 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-21 01:58:02,640 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:58:02,645 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:58:02,652 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:58:02,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:58:05,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 01:58:06,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 01:58:06,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-21 01:58:07,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:07,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:10,153 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-21 01:58:10,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2021-11-21 01:58:12,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:12,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1540 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2021-11-21 01:58:19,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2021-11-21 01:58:21,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2021-11-21 01:58:25,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:25,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2021-11-21 01:58:25,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 728 treesize of output 716 [2021-11-21 01:58:33,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:33,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6349 treesize of output 6012 [2021-11-21 01:58:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:34,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6342 treesize of output 6005 [2021-11-21 01:58:35,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:35,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6335 treesize of output 6054 [2021-11-21 01:58:35,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6332 treesize of output 6310 [2021-11-21 02:00:51,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:00:51,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:00:51,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:01:00,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-21 02:01:27,248 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-21 02:01:28,542 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-21 02:01:29,702 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-21 02:01:31,656 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-21 02:01:32,356 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 02:01:46,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1161168997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:01:46,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 02:01:46,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2021-11-21 02:01:46,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387052910] [2021-11-21 02:01:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:01:46,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 02:01:46,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:01:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 02:01:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-21 02:01:46,784 INFO L87 Difference]: Start difference. First operand 1555 states and 2217 transitions. Second operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:01:55,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:01:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:01:58,425 INFO L93 Difference]: Finished difference Result 1578 states and 2246 transitions. [2021-11-21 02:01:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 02:01:58,426 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-21 02:01:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:01:58,443 INFO L225 Difference]: With dead ends: 1578 [2021-11-21 02:01:58,443 INFO L226 Difference]: Without dead ends: 1575 [2021-11-21 02:01:58,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-21 02:01:58,452 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 7 mSDsluCounter, 14688 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14475 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2179 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:01:58,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14475 Invalid, 3355 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 0 Unknown, 2179 Unchecked, 11.3s Time] [2021-11-21 02:01:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-11-21 02:01:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2021-11-21 02:01:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 969 states have (on average 1.301341589267286) internal successors, (1261), 980 states have internal predecessors, (1261), 492 states have call successors, (492), 115 states have call predecessors, (492), 113 states have return successors, (490), 488 states have call predecessors, (490), 490 states have call successors, (490) [2021-11-21 02:01:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2243 transitions. [2021-11-21 02:01:58,591 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2243 transitions. Word has length 30 [2021-11-21 02:01:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:01:58,593 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2243 transitions. [2021-11-21 02:01:58,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:01:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2243 transitions. [2021-11-21 02:01:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 02:01:58,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:01:58,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:01:58,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 02:01:58,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:01:58,817 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:01:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:01:58,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1157582882, now seen corresponding path program 1 times [2021-11-21 02:01:58,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:01:58,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488207746] [2021-11-21 02:01:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:58,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:01:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:01:58,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:01:58,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488207746] [2021-11-21 02:01:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488207746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:01:58,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195184124] [2021-11-21 02:01:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:01:58,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:01:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:01:58,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:01:58,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 02:01:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:01:59,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:01:59,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:01:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 02:01:59,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:01:59,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195184124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:01:59,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 02:01:59,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 02:01:59,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652422777] [2021-11-21 02:01:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:01:59,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:01:59,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:01:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:01:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:01:59,575 INFO L87 Difference]: Start difference. First operand 1575 states and 2243 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:02:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:02:01,061 INFO L93 Difference]: Finished difference Result 3590 states and 5203 transitions. [2021-11-21 02:02:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:02:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-11-21 02:02:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:02:01,080 INFO L225 Difference]: With dead ends: 3590 [2021-11-21 02:02:01,081 INFO L226 Difference]: Without dead ends: 2043 [2021-11-21 02:02:01,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:02:01,089 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 492 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:02:01,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 2171 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 02:02:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-11-21 02:02:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2039. [2021-11-21 02:02:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.3144208037825058) internal successors, (1668), 1278 states have internal predecessors, (1668), 660 states have call successors, (660), 111 states have call predecessors, (660), 109 states have return successors, (658), 656 states have call predecessors, (658), 658 states have call successors, (658) [2021-11-21 02:02:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2986 transitions. [2021-11-21 02:02:01,251 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2986 transitions. Word has length 31 [2021-11-21 02:02:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:02:01,252 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2986 transitions. [2021-11-21 02:02:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:02:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2986 transitions. [2021-11-21 02:02:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 02:02:01,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:02:01,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:02:01,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 02:02:01,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-21 02:02:01,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:02:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:02:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1239234258, now seen corresponding path program 1 times [2021-11-21 02:02:01,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:02:01,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176217580] [2021-11-21 02:02:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:01,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:02:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:02:01,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:02:01,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176217580] [2021-11-21 02:02:01,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176217580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:02:01,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467738745] [2021-11-21 02:02:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:02:01,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:02:01,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:02:01,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:02:01,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 02:02:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:02:02,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:02:02,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:02:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:02:02,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:02:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:02:02,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467738745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:02:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [785065741] [2021-11-21 02:02:02,401 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-21 02:02:02,402 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:02:02,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:02:02,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:02:02,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:02:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:06,103 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-21 02:02:06,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1486 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2021-11-21 02:02:10,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:02:11,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:02:15,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:15,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:15,729 INFO L244 Elim1Store]: Index analysis took 128 ms [2021-11-21 02:02:18,341 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-21 02:02:18,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2021-11-21 02:02:21,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-21 02:02:22,191 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:02:22,320 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:02:22,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:02:22,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:02:22,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:02:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:23,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-21 02:02:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:23,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2021-11-21 02:02:23,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:02:24,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:02:24,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:02:24,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:02:35,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-21 02:03:10,386 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-21 02:03:10,993 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 141 for LOIs [2021-11-21 02:03:11,522 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-21 02:03:12,147 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-21 02:03:12,962 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 02:03:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [785065741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:25,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 02:03:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2021-11-21 02:03:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796175849] [2021-11-21 02:03:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 02:03:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 02:03:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-11-21 02:03:25,239 INFO L87 Difference]: Start difference. First operand 2039 states and 2986 transitions. Second operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 02:03:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:31,465 INFO L93 Difference]: Finished difference Result 2050 states and 2997 transitions. [2021-11-21 02:03:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 02:03:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-11-21 02:03:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:31,481 INFO L225 Difference]: With dead ends: 2050 [2021-11-21 02:03:31,481 INFO L226 Difference]: Without dead ends: 2044 [2021-11-21 02:03:31,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-11-21 02:03:31,484 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 10 mSDsluCounter, 12576 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12692 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 577 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:31,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 12692 Invalid, 1602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1024 Invalid, 0 Unknown, 577 Unchecked, 6.0s Time] [2021-11-21 02:03:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-11-21 02:03:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2021-11-21 02:03:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1272 states have (on average 1.3136792452830188) internal successors, (1671), 1281 states have internal predecessors, (1671), 661 states have call successors, (661), 112 states have call predecessors, (661), 110 states have return successors, (659), 657 states have call predecessors, (659), 659 states have call successors, (659) [2021-11-21 02:03:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2991 transitions. [2021-11-21 02:03:31,600 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2991 transitions. Word has length 32 [2021-11-21 02:03:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:31,600 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 2991 transitions. [2021-11-21 02:03:31,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.15) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 02:03:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2991 transitions. [2021-11-21 02:03:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 02:03:31,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:31,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:03:31,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 02:03:31,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:03:31,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:03:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash -432849447, now seen corresponding path program 1 times [2021-11-21 02:03:31,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:31,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017900647] [2021-11-21 02:03:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:31,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:03:31,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:31,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017900647] [2021-11-21 02:03:31,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017900647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:03:31,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582253241] [2021-11-21 02:03:31,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:31,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:03:31,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:03:31,919 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:03:31,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 02:03:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:32,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:03:32,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:03:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 02:03:32,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 02:03:32,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582253241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:03:32,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 02:03:32,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 02:03:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009803394] [2021-11-21 02:03:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:03:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:03:32,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:03:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:03:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:03:32,412 INFO L87 Difference]: Start difference. First operand 2044 states and 2991 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:03:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:03:32,878 INFO L93 Difference]: Finished difference Result 4055 states and 5941 transitions. [2021-11-21 02:03:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:03:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-21 02:03:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:03:32,893 INFO L225 Difference]: With dead ends: 4055 [2021-11-21 02:03:32,893 INFO L226 Difference]: Without dead ends: 2042 [2021-11-21 02:03:32,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 02:03:32,900 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 509 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 02:03:32,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1407 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 02:03:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-21 02:03:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2021-11-21 02:03:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1270 states have (on average 1.3094488188976379) internal successors, (1663), 1279 states have internal predecessors, (1663), 661 states have call successors, (661), 112 states have call predecessors, (661), 110 states have return successors, (659), 657 states have call predecessors, (659), 659 states have call successors, (659) [2021-11-21 02:03:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2983 transitions. [2021-11-21 02:03:33,043 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2983 transitions. Word has length 32 [2021-11-21 02:03:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:03:33,045 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 2983 transitions. [2021-11-21 02:03:33,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:03:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2983 transitions. [2021-11-21 02:03:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 02:03:33,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:03:33,047 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 02:03:33,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 02:03:33,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:03:33,273 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:03:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:03:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash -937791326, now seen corresponding path program 1 times [2021-11-21 02:03:33,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:03:33,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275178750] [2021-11-21 02:03:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:33,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:03:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:03:33,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:03:33,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275178750] [2021-11-21 02:03:33,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275178750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:03:33,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125673141] [2021-11-21 02:03:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:03:33,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:03:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:03:33,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:03:33,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 02:03:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:03:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:03:33,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:03:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:03:33,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:03:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 02:03:33,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125673141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:03:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2049511065] [2021-11-21 02:03:33,912 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-21 02:03:33,912 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:03:33,912 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:03:33,913 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:03:33,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:03:35,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:03:36,783 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-21 02:03:36,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1486 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2021-11-21 02:03:40,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:03:41,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:03:44,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:03:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:03:44,417 INFO L244 Elim1Store]: Index analysis took 105 ms [2021-11-21 02:03:46,549 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-21 02:03:46,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2021-11-21 02:03:49,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-21 02:03:49,865 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:03:49,893 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:03:50,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:03:50,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:03:50,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:03:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:03:50,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-21 02:03:50,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:03:50,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2021-11-21 02:03:51,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:03:51,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:03:51,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:03:51,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:03:59,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-21 02:04:45,348 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-21 02:04:46,361 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 141 for LOIs [2021-11-21 02:04:47,317 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-21 02:04:48,301 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-21 02:04:49,538 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 02:05:03,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2049511065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:05:03,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 02:05:03,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 3, 4] total 31 [2021-11-21 02:05:03,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558659363] [2021-11-21 02:05:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:05:03,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 02:05:03,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:05:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 02:05:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2021-11-21 02:05:03,498 INFO L87 Difference]: Start difference. First operand 2042 states and 2983 transitions. Second operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 02:05:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:05:09,526 INFO L93 Difference]: Finished difference Result 2066 states and 3012 transitions. [2021-11-21 02:05:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 02:05:09,527 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2021-11-21 02:05:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:05:09,542 INFO L225 Difference]: With dead ends: 2066 [2021-11-21 02:05:09,542 INFO L226 Difference]: Without dead ends: 2059 [2021-11-21 02:05:09,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2021-11-21 02:05:09,544 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 12 mSDsluCounter, 11697 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11652 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1151 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-21 02:05:09,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 11652 Invalid, 2016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 1151 Unchecked, 5.9s Time] [2021-11-21 02:05:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-11-21 02:05:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2058. [2021-11-21 02:05:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 1282 states have (on average 1.3104524180967239) internal successors, (1680), 1291 states have internal predecessors, (1680), 663 states have call successors, (663), 114 states have call predecessors, (663), 112 states have return successors, (661), 659 states have call predecessors, (661), 661 states have call successors, (661) [2021-11-21 02:05:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 3004 transitions. [2021-11-21 02:05:09,671 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 3004 transitions. Word has length 36 [2021-11-21 02:05:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:05:09,672 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 3004 transitions. [2021-11-21 02:05:09,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 02:05:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 3004 transitions. [2021-11-21 02:05:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 02:05:09,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:05:09,674 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 02:05:09,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 02:05:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:05:09,889 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:05:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:05:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 761489431, now seen corresponding path program 1 times [2021-11-21 02:05:09,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:05:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654442380] [2021-11-21 02:05:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:09,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:05:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:05:09,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:05:09,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654442380] [2021-11-21 02:05:09,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654442380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:05:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933791532] [2021-11-21 02:05:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:05:09,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:05:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:05:09,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:05:09,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 02:05:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:05:10,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:05:10,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:05:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:05:10,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:05:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:05:10,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933791532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:05:10,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196537084] [2021-11-21 02:05:10,476 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-21 02:05:10,477 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:05:10,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:05:10,477 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:05:10,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:05:12,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:14,661 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-21 02:05:14,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2021-11-21 02:05:17,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:05:17,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-21 02:05:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:20,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1540 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 446 [2021-11-21 02:05:23,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:05:24,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2021-11-21 02:05:26,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 614 [2021-11-21 02:05:26,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 728 treesize of output 716 [2021-11-21 02:05:31,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 663 [2021-11-21 02:05:38,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6349 treesize of output 6012 [2021-11-21 02:05:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:38,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6342 treesize of output 6005 [2021-11-21 02:05:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:05:39,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 6335 treesize of output 6054 [2021-11-21 02:05:40,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6332 treesize of output 6310 [2021-11-21 02:08:14,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:08:14,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:08:15,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:08:24,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-21 02:09:05,622 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-21 02:09:06,501 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-21 02:09:07,296 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-21 02:09:09,582 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-21 02:09:10,716 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 02:09:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1196537084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:09:26,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 02:09:26,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 3, 4] total 32 [2021-11-21 02:09:26,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758185130] [2021-11-21 02:09:26,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:09:26,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-21 02:09:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:09:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-21 02:09:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-11-21 02:09:26,473 INFO L87 Difference]: Start difference. First operand 2058 states and 3004 transitions. Second operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:09:30,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:09:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:09:33,052 INFO L93 Difference]: Finished difference Result 2079 states and 3032 transitions. [2021-11-21 02:09:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 02:09:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-11-21 02:09:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:09:33,072 INFO L225 Difference]: With dead ends: 2079 [2021-11-21 02:09:33,072 INFO L226 Difference]: Without dead ends: 2076 [2021-11-21 02:09:33,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-11-21 02:09:33,075 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 7 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12323 SdHoareTripleChecker+Invalid, 3644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2773 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:09:33,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 12323 Invalid, 3644 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 870 Invalid, 0 Unknown, 2773 Unchecked, 6.3s Time] [2021-11-21 02:09:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-11-21 02:09:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2070. [2021-11-21 02:09:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1292 states have (on average 1.3103715170278638) internal successors, (1693), 1301 states have internal predecessors, (1693), 664 states have call successors, (664), 115 states have call predecessors, (664), 113 states have return successors, (662), 660 states have call predecessors, (662), 662 states have call successors, (662) [2021-11-21 02:09:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3019 transitions. [2021-11-21 02:09:33,250 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3019 transitions. Word has length 36 [2021-11-21 02:09:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:09:33,251 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 3019 transitions. [2021-11-21 02:09:33,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 02:09:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3019 transitions. [2021-11-21 02:09:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 02:09:33,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:09:33,256 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 02:09:33,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 02:09:33,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 02:09:33,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:09:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:09:33,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1001318799, now seen corresponding path program 1 times [2021-11-21 02:09:33,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:09:33,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394740444] [2021-11-21 02:09:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:09:33,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:09:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:09:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:09:33,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:09:33,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394740444] [2021-11-21 02:09:33,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394740444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:09:33,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686788574] [2021-11-21 02:09:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:09:33,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:09:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:09:33,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:09:33,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a796d9-bce7-48b0-87df-638ac86ac317/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 02:09:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:09:34,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:09:34,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:09:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:09:34,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:09:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 02:09:34,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686788574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:09:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773065808] [2021-11-21 02:09:34,318 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-21 02:09:34,318 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:09:34,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:09:34,318 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:09:34,319 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:09:35,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-21 02:09:37,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:09:39,709 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-21 02:09:39,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1486 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 54 case distinctions, treesize of input 282 treesize of output 642 [2021-11-21 02:09:43,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:09:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:09:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:09:46,442 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-21 02:09:46,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 57 select indices, 57 select index equivalence classes, 1542 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 108 case distinctions, treesize of input 292 treesize of output 673 [2021-11-21 02:09:50,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 02:09:53,874 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:09:53,888 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-21 02:09:54,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:09:54,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:09:54,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:09:55,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:09:55,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:09:55,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-21 02:09:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:09:55,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2021-11-21 02:09:56,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:09:56,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:09:56,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 02:10:06,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9