./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/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_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:49:05,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:49:05,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:49:06,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:49:06,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:49:06,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:49:06,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:49:06,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:49:06,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:49:06,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:49:06,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:49:06,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:49:06,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:49:06,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:49:06,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:49:06,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:49:06,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:49:06,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:49:06,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:49:06,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:49:06,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:49:06,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:49:06,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:49:06,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:49:06,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:49:06,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:49:06,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:49:06,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:49:06,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:49:06,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:49:06,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:49:06,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:49:06,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:49:06,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:49:06,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:49:06,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:49:06,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:49:06,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:49:06,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:49:06,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:49:06,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:49:06,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:49:06,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:49:06,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:49:06,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:49:06,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:49:06,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:49:06,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:49:06,127 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:49:06,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:49:06,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:49:06,129 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:49:06,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:49:06,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:49:06,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:49:06,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:49:06,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:49:06,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:49:06,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:49:06,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:49:06,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:49:06,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:49:06,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:49:06,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:49:06,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:49:06,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:49:06,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:49:06,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:49:06,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:49:06,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2021-11-25 17:49:06,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:49:06,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:49:06,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:49:06,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:49:06,435 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:49:06,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-25 17:49:06,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/data/bc67d8ccf/0501d9be3daf49e9bb4e63bdad6395bf/FLAGcb6e7280b [2021-11-25 17:49:07,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:49:07,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-25 17:49:07,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/data/bc67d8ccf/0501d9be3daf49e9bb4e63bdad6395bf/FLAGcb6e7280b [2021-11-25 17:49:07,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/data/bc67d8ccf/0501d9be3daf49e9bb4e63bdad6395bf [2021-11-25 17:49:07,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:49:07,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:49:07,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:49:07,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:49:07,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:49:07,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:49:07" (1/1) ... [2021-11-25 17:49:07,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a97c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:07, skipping insertion in model container [2021-11-25 17:49:07,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:49:07" (1/1) ... [2021-11-25 17:49:07,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:49:07,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:49:09,292 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_c21ec6b2-48b0-4ece-9a96-ddb69445d396/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2021-11-25 17:49:09,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:49:09,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:49:09,740 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_c21ec6b2-48b0-4ece-9a96-ddb69445d396/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2021-11-25 17:49:09,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:49:10,003 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:49:10,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10 WrapperNode [2021-11-25 17:49:10,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:49:10,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:49:10,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:49:10,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:49:10,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,271 INFO L137 Inliner]: procedures = 200, calls = 1489, calls flagged for inlining = 98, calls inlined = 84, statements flattened = 3293 [2021-11-25 17:49:10,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:49:10,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:49:10,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:49:10,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:49:10,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:49:10,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:49:10,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:49:10,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:49:10,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (1/1) ... [2021-11-25 17:49:10,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:49:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:10,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:49:10,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:49:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:49:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:49:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 17:49:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 17:49:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 17:49:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 17:49:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 17:49:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 17:49:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:49:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:49:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 17:49:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 17:49:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 17:49:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 17:49:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 17:49:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 17:49:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-25 17:49:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-25 17:49:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 17:49:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 17:49:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-25 17:49:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-25 17:49:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 17:49:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 17:49:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 17:49:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 17:49:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 17:49:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 17:49:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:49:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:49:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 17:49:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-25 17:49:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-25 17:49:10,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-25 17:49:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 17:49:10,576 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 17:49:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-25 17:49:10,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-25 17:49:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:49:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 17:49:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 17:49:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:49:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 17:49:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 17:49:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 17:49:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 17:49:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-25 17:49:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-25 17:49:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-25 17:49:10,579 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-25 17:49:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2021-11-25 17:49:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2021-11-25 17:49:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 17:49:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 17:49:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-25 17:49:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-25 17:49:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2021-11-25 17:49:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2021-11-25 17:49:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:49:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 17:49:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 17:49:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 17:49:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 17:49:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 17:49:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 17:49:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:49:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:49:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 17:49:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 17:49:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-25 17:49:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-25 17:49:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:49:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:49:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2021-11-25 17:49:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2021-11-25 17:49:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:49:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:49:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:49:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 17:49:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 17:49:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 17:49:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 17:49:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2021-11-25 17:49:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2021-11-25 17:49:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:49:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 17:49:10,588 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 17:49:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:49:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2021-11-25 17:49:10,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2021-11-25 17:49:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:49:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 17:49:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 17:49:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2021-11-25 17:49:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2021-11-25 17:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2021-11-25 17:49:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2021-11-25 17:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 17:49:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 17:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 17:49:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 17:49:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-25 17:49:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-25 17:49:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-11-25 17:49:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-11-25 17:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-25 17:49:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-25 17:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 17:49:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 17:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 17:49:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 17:49:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-25 17:49:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-25 17:49:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2021-11-25 17:49:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2021-11-25 17:49:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:49:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-25 17:49:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-25 17:49:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-25 17:49:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-25 17:49:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-25 17:49:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-25 17:49:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-25 17:49:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-25 17:49:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:49:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:49:10,609 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 17:49:10,609 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 17:49:11,191 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:49:11,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:49:11,854 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,860 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,871 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,873 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,875 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,876 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:11,886 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:49:14,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2021-11-25 17:49:14,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2021-11-25 17:49:14,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##265: assume !false; [2021-11-25 17:49:14,054 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##264: assume false; [2021-11-25 17:49:14,054 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2021-11-25 17:49:14,054 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2021-11-25 17:49:14,054 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume !false; [2021-11-25 17:49:14,054 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##227: assume false; [2021-11-25 17:49:14,055 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; [2021-11-25 17:49:14,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume false; [2021-11-25 17:49:14,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-11-25 17:49:14,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-11-25 17:49:14,055 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##391: assume !false; [2021-11-25 17:49:14,056 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##390: assume false; [2021-11-25 17:49:14,131 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:49:14,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:49:14,816 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:49:14,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:49:14 BoogieIcfgContainer [2021-11-25 17:49:14,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:49:14,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:49:14,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:49:14,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:49:14,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:49:07" (1/3) ... [2021-11-25 17:49:14,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aa43d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:49:14, skipping insertion in model container [2021-11-25 17:49:14,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:10" (2/3) ... [2021-11-25 17:49:14,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aa43d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:49:14, skipping insertion in model container [2021-11-25 17:49:14,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:49:14" (3/3) ... [2021-11-25 17:49:14,832 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2021-11-25 17:49:14,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:49:14,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:49:14,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:49:14,922 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 [2021-11-25 17:49:14,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:49:14,975 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) [2021-11-25 17:49:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 17:49:14,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:14,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:14,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:14,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1634586507, now seen corresponding path program 1 times [2021-11-25 17:49:14,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:14,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972810504] [2021-11-25 17:49:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:14,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:15,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:15,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972810504] [2021-11-25 17:49:15,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972810504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:15,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:15,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:49:15,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793534621] [2021-11-25 17:49:15,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:15,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:49:15,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:49:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:49:15,466 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) [2021-11-25 17:49:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:17,054 INFO L93 Difference]: Finished difference Result 1640 states and 2353 transitions. [2021-11-25 17:49:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:49:17,057 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 [2021-11-25 17:49:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:17,078 INFO L225 Difference]: With dead ends: 1640 [2021-11-25 17:49:17,078 INFO L226 Difference]: Without dead ends: 819 [2021-11-25 17:49:17,086 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 [2021-11-25 17:49:17,090 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, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:17,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2081 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 17:49:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-25 17:49:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-11-25 17:49:17,264 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) [2021-11-25 17:49:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1172 transitions. [2021-11-25 17:49:17,286 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1172 transitions. Word has length 15 [2021-11-25 17:49:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:17,288 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1172 transitions. [2021-11-25 17:49:17,288 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) [2021-11-25 17:49:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1172 transitions. [2021-11-25 17:49:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 17:49:17,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:17,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:17,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:49:17,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1239223528, now seen corresponding path program 1 times [2021-11-25 17:49:17,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:17,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862020865] [2021-11-25 17:49:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:17,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:17,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:17,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862020865] [2021-11-25 17:49:17,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862020865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:17,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460878331] [2021-11-25 17:49:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:17,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:17,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:17,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:49:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:17,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:49:17,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:49:18,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:49:18,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460878331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:18,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:49:18,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-25 17:49:18,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332372331] [2021-11-25 17:49:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:18,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:49:18,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:49:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:49:18,006 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) [2021-11-25 17:49:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:19,452 INFO L93 Difference]: Finished difference Result 2373 states and 3389 transitions. [2021-11-25 17:49:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:49:19,453 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 [2021-11-25 17:49:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:19,468 INFO L225 Difference]: With dead ends: 2373 [2021-11-25 17:49:19,468 INFO L226 Difference]: Without dead ends: 1559 [2021-11-25 17:49:19,471 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 [2021-11-25 17:49:19,473 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 [2021-11-25 17:49:19,474 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] [2021-11-25 17:49:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-11-25 17:49:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1555. [2021-11-25 17:49:19,566 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) [2021-11-25 17:49:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2217 transitions. [2021-11-25 17:49:19,580 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2217 transitions. Word has length 16 [2021-11-25 17:49:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:19,581 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2217 transitions. [2021-11-25 17:49:19,581 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) [2021-11-25 17:49:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2217 transitions. [2021-11-25 17:49:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 17:49:19,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:19,584 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] [2021-11-25 17:49:19,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:49:19,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:19,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1150068244, now seen corresponding path program 1 times [2021-11-25 17:49:19,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:19,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432730554] [2021-11-25 17:49:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:19,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:19,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:19,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432730554] [2021-11-25 17:49:19,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432730554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:19,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630866766] [2021-11-25 17:49:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:19,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:19,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:19,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:49:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:20,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:49:20,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:20,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:49:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:20,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630866766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:49:20,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429046342] [2021-11-25 17:49:20,673 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-25 17:49:20,673 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:49:20,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:49:20,682 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:49:20,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:49:22,166 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 [2021-11-25 17:49:22,300 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 [2021-11-25 17:49:22,398 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 [2021-11-25 17:49:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:25,345 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:49:25,347 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 [2021-11-25 17:49:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:25,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 17:49:27,083 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 [2021-11-25 17:49:27,385 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 [2021-11-25 17:49:27,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:27,773 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 [2021-11-25 17:49:27,886 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 12 treesize of output 1 [2021-11-25 17:49:33,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:33,119 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 6512 treesize of output 6175 [2021-11-25 17:49:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,046 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 6508 treesize of output 6171 [2021-11-25 17:49:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:49:34,899 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 6513 treesize of output 6232 [2021-11-25 17:49:36,052 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 22 treesize of output 1 [2021-11-25 17:49:44,019 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 [2021-11-25 17:49:44,028 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 [2021-11-25 17:49:44,044 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 [2021-11-25 17:49:44,408 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 6 treesize of output 5 [2021-11-25 17:49:45,742 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2021-11-25 17:49:45,780 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 17:49:45,792 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2021-11-25 17:49:45,905 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 17:49:45,920 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:49:55,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1429046342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:55,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:49:55,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2021-11-25 17:49:55,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968631128] [2021-11-25 17:49:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:55,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 17:49:55,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 17:49:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:49:55,252 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) [2021-11-25 17:50:02,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:02,472 INFO L93 Difference]: Finished difference Result 1578 states and 2246 transitions. [2021-11-25 17:50:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:50:02,473 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 [2021-11-25 17:50:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:02,487 INFO L225 Difference]: With dead ends: 1578 [2021-11-25 17:50:02,487 INFO L226 Difference]: Without dead ends: 1575 [2021-11-25 17:50:02,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:50:02,493 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 7 mSDsluCounter, 14688 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:02,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14475 Invalid, 3355 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 0 Unknown, 2179 Unchecked, 6.9s Time] [2021-11-25 17:50:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-11-25 17:50:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2021-11-25 17:50:02,572 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) [2021-11-25 17:50:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2243 transitions. [2021-11-25 17:50:02,584 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2243 transitions. Word has length 30 [2021-11-25 17:50:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:02,585 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2243 transitions. [2021-11-25 17:50:02,585 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) [2021-11-25 17:50:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2243 transitions. [2021-11-25 17:50:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 17:50:02,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:02,593 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] [2021-11-25 17:50:02,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:02,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:02,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1157582882, now seen corresponding path program 1 times [2021-11-25 17:50:02,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694330161] [2021-11-25 17:50:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:02,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:02,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694330161] [2021-11-25 17:50:02,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694330161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625065379] [2021-11-25 17:50:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:02,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:02,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:02,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:50:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:03,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:50:03,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:50:03,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:50:03,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625065379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:03,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:50:03,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 17:50:03,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906666121] [2021-11-25 17:50:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:03,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:03,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:03,460 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) [2021-11-25 17:50:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:04,478 INFO L93 Difference]: Finished difference Result 3590 states and 5203 transitions. [2021-11-25 17:50:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:04,479 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 [2021-11-25 17:50:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:04,495 INFO L225 Difference]: With dead ends: 3590 [2021-11-25 17:50:04,495 INFO L226 Difference]: Without dead ends: 2043 [2021-11-25 17:50:04,501 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 [2021-11-25 17:50:04,503 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 492 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:04,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 2171 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:50:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-11-25 17:50:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2039. [2021-11-25 17:50:04,603 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) [2021-11-25 17:50:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2986 transitions. [2021-11-25 17:50:04,618 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2986 transitions. Word has length 31 [2021-11-25 17:50:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:04,619 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2986 transitions. [2021-11-25 17:50:04,619 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) [2021-11-25 17:50:04,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2986 transitions. [2021-11-25 17:50:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 17:50:04,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:04,622 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] [2021-11-25 17:50:04,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:04,839 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1239234258, now seen corresponding path program 1 times [2021-11-25 17:50:04,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:04,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207858769] [2021-11-25 17:50:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:04,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:04,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207858769] [2021-11-25 17:50:04,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207858769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706299112] [2021-11-25 17:50:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:04,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:04,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:04,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:04,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 17:50:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:05,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:50:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:05,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:50:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:05,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706299112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:50:05,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827752633] [2021-11-25 17:50:05,545 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-25 17:50:05,545 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:50:05,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:50:05,546 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:50:05,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:50:06,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:06,342 INFO L244 Elim1Store]: Index analysis took 107 ms [2021-11-25 17:50:07,701 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:50:07,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:50:08,069 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 [2021-11-25 17:50:08,153 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 [2021-11-25 17:50:08,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:10,512 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:50:10,513 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 [2021-11-25 17:50:10,810 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 [2021-11-25 17:50:10,847 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:50:10,869 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:50:10,958 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 [2021-11-25 17:50:10,973 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 [2021-11-25 17:50:10,988 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 [2021-11-25 17:50:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:11,160 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 52 treesize of output 51 [2021-11-25 17:50:11,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:11,174 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 52 treesize of output 51 [2021-11-25 17:50:11,215 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 [2021-11-25 17:50:11,326 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 [2021-11-25 17:50:11,340 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 [2021-11-25 17:50:11,362 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 [2021-11-25 17:50:11,840 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 6 treesize of output 5 [2021-11-25 17:50:14,264 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:50:14,317 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 151 for LOIs [2021-11-25 17:50:14,369 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:50:14,388 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:50:14,409 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:50:32,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [827752633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:32,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:50:32,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 3, 4] total 31 [2021-11-25 17:50:32,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333041773] [2021-11-25 17:50:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 17:50:32,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 17:50:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:50:32,811 INFO L87 Difference]: Start difference. First operand 2039 states and 2986 transitions. Second operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 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) [2021-11-25 17:50:40,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:41,225 INFO L93 Difference]: Finished difference Result 3362 states and 4956 transitions. [2021-11-25 17:50:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:50:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 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 [2021-11-25 17:50:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:41,241 INFO L225 Difference]: With dead ends: 3362 [2021-11-25 17:50:41,241 INFO L226 Difference]: Without dead ends: 2039 [2021-11-25 17:50:41,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:50:41,248 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 8 mSDsluCounter, 13690 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13692 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:41,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 13692 Invalid, 1798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1210 Invalid, 0 Unknown, 586 Unchecked, 8.2s Time] [2021-11-25 17:50:41,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-25 17:50:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2039. [2021-11-25 17:50:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.313632781717888) internal successors, (1667), 1278 states have internal predecessors, (1667), 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) [2021-11-25 17:50:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2985 transitions. [2021-11-25 17:50:41,360 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2985 transitions. Word has length 32 [2021-11-25 17:50:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:41,360 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2985 transitions. [2021-11-25 17:50:41,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.15) internal successors, (23), 19 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) [2021-11-25 17:50:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2985 transitions. [2021-11-25 17:50:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 17:50:41,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:41,362 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] [2021-11-25 17:50:41,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:41,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:41,591 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash -432849447, now seen corresponding path program 1 times [2021-11-25 17:50:41,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:41,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422553527] [2021-11-25 17:50:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:41,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:50:41,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:41,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422553527] [2021-11-25 17:50:41,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422553527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:41,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183279994] [2021-11-25 17:50:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:41,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:41,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:41,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:41,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 17:50:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:42,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:50:42,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:50:42,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:50:42,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183279994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:42,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:50:42,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 17:50:42,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844871195] [2021-11-25 17:50:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:42,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:42,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:42,196 INFO L87 Difference]: Start difference. First operand 2039 states and 2985 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) [2021-11-25 17:50:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:42,811 INFO L93 Difference]: Finished difference Result 4050 states and 5935 transitions. [2021-11-25 17:50:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:42,812 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 [2021-11-25 17:50:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:42,826 INFO L225 Difference]: With dead ends: 4050 [2021-11-25 17:50:42,826 INFO L226 Difference]: Without dead ends: 2037 [2021-11-25 17:50:42,833 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 [2021-11-25 17:50:42,834 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 509 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:42,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1407 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:50:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-11-25 17:50:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2021-11-25 17:50:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1267 states have (on average 1.3093922651933703) internal successors, (1659), 1276 states have internal predecessors, (1659), 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) [2021-11-25 17:50:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2977 transitions. [2021-11-25 17:50:42,961 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2977 transitions. Word has length 32 [2021-11-25 17:50:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:42,963 INFO L470 AbstractCegarLoop]: Abstraction has 2037 states and 2977 transitions. [2021-11-25 17:50:42,963 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) [2021-11-25 17:50:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2977 transitions. [2021-11-25 17:50:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 17:50:42,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:42,966 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] [2021-11-25 17:50:42,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:43,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:43,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 761489431, now seen corresponding path program 1 times [2021-11-25 17:50:43,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:43,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638033396] [2021-11-25 17:50:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:43,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:50:43,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638033396] [2021-11-25 17:50:43,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638033396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:43,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758694829] [2021-11-25 17:50:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:43,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:43,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:43,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 17:50:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:43,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:50:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:50:43,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:50:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:50:43,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758694829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:50:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459728107] [2021-11-25 17:50:43,815 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-25 17:50:43,816 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:50:43,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:50:43,816 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:50:43,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:50:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:45,809 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:50:45,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:50:46,141 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 [2021-11-25 17:50:46,214 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 [2021-11-25 17:50:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:46,514 INFO L244 Elim1Store]: Index analysis took 107 ms [2021-11-25 17:50:48,646 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:50:48,647 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 [2021-11-25 17:50:48,861 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 [2021-11-25 17:50:48,897 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:50:48,916 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:50:48,998 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 [2021-11-25 17:50:49,015 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 [2021-11-25 17:50:49,027 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 [2021-11-25 17:50:49,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:49,162 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 52 treesize of output 51 [2021-11-25 17:50:49,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:50:49,192 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 52 treesize of output 51 [2021-11-25 17:50:49,213 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 [2021-11-25 17:50:49,300 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 [2021-11-25 17:50:49,327 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 [2021-11-25 17:50:49,343 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 [2021-11-25 17:50:49,750 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 6 treesize of output 5 [2021-11-25 17:50:52,481 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:50:52,534 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:50:52,553 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-25 17:50:52,713 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:50:52,734 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:51:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [459728107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:13,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:51:13,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 3, 4] total 32 [2021-11-25 17:51:13,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793925093] [2021-11-25 17:51:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:13,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 17:51:13,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 17:51:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:51:13,602 INFO L87 Difference]: Start difference. First operand 2037 states and 2977 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) [2021-11-25 17:51:18,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:19,277 INFO L93 Difference]: Finished difference Result 2058 states and 3005 transitions. [2021-11-25 17:51:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 17:51:19,278 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 [2021-11-25 17:51:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:19,291 INFO L225 Difference]: With dead ends: 2058 [2021-11-25 17:51:19,291 INFO L226 Difference]: Without dead ends: 2055 [2021-11-25 17:51:19,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:51:19,293 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 7 mSDsluCounter, 10394 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10549 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1482 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:19,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10549 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 875 Invalid, 0 Unknown, 1482 Unchecked, 5.5s Time] [2021-11-25 17:51:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-11-25 17:51:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2049. [2021-11-25 17:51:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1277 states have (on average 1.3093187157400157) internal successors, (1672), 1286 states have internal predecessors, (1672), 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) [2021-11-25 17:51:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2992 transitions. [2021-11-25 17:51:19,411 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2992 transitions. Word has length 36 [2021-11-25 17:51:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:19,411 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2992 transitions. [2021-11-25 17:51:19,412 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) [2021-11-25 17:51:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2992 transitions. [2021-11-25 17:51:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 17:51:19,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:19,414 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] [2021-11-25 17:51:19,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 17:51:19,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:51:19,627 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:51:19,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1001318799, now seen corresponding path program 1 times [2021-11-25 17:51:19,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:19,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951617779] [2021-11-25 17:51:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:19,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:51:19,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951617779] [2021-11-25 17:51:19,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951617779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:51:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943230670] [2021-11-25 17:51:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:19,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:51:19,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:51:19,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:51:19,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 17:51:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:20,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:51:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:51:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:51:20,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:51:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:51:20,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943230670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:51:20,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429296195] [2021-11-25 17:51:20,303 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-25 17:51:20,306 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:51:20,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:51:20,306 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:51:20,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:51:21,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:23,192 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:51:23,192 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 [2021-11-25 17:51:23,379 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 [2021-11-25 17:51:23,429 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 [2021-11-25 17:51:23,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:23,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 17:51:23,809 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 [2021-11-25 17:51:24,602 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 [2021-11-25 17:51:24,784 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 [2021-11-25 17:51:24,856 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 12 treesize of output 1 [2021-11-25 17:51:25,114 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 [2021-11-25 17:51:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:29,550 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 6512 treesize of output 6175 [2021-11-25 17:51:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,190 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 6508 treesize of output 6171 [2021-11-25 17:51:30,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:51:30,887 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 6513 treesize of output 6232 [2021-11-25 17:51:31,878 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 22 treesize of output 1 [2021-11-25 17:51:39,652 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 [2021-11-25 17:51:39,662 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 [2021-11-25 17:51:39,679 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 [2021-11-25 17:51:39,889 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 6 treesize of output 5 [2021-11-25 17:51:42,833 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2021-11-25 17:51:42,869 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 114 for LOIs [2021-11-25 17:51:42,901 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 17:51:42,912 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 17:51:42,926 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:51:58,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1429296195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:58,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:51:58,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 3, 4] total 33 [2021-11-25 17:51:58,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748091077] [2021-11-25 17:51:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:58,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 17:51:58,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 17:51:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:51:58,156 INFO L87 Difference]: Start difference. First operand 2049 states and 2992 transitions. Second operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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) [2021-11-25 17:52:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:02,636 INFO L93 Difference]: Finished difference Result 3372 states and 4959 transitions. [2021-11-25 17:52:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 17:52:02,642 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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 38 [2021-11-25 17:52:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:02,655 INFO L225 Difference]: With dead ends: 3372 [2021-11-25 17:52:02,655 INFO L226 Difference]: Without dead ends: 2049 [2021-11-25 17:52:02,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:52:02,662 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 7 mSDsluCounter, 12856 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12596 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1517 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:02,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 12596 Invalid, 2430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 910 Invalid, 0 Unknown, 1517 Unchecked, 4.3s Time] [2021-11-25 17:52:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-11-25 17:52:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2039. [2021-11-25 17:52:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1269 states have (on average 1.309692671394799) internal successors, (1662), 1278 states have internal predecessors, (1662), 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) [2021-11-25 17:52:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2980 transitions. [2021-11-25 17:52:02,776 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2980 transitions. Word has length 38 [2021-11-25 17:52:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:02,777 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2980 transitions. [2021-11-25 17:52:02,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 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) [2021-11-25 17:52:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2980 transitions. [2021-11-25 17:52:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 17:52:02,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:02,779 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:02,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 17:52:02,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:52:02,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1020892178, now seen corresponding path program 1 times [2021-11-25 17:52:02,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452019607] [2021-11-25 17:52:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:02,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:03,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452019607] [2021-11-25 17:52:03,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452019607] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:52:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692786528] [2021-11-25 17:52:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:03,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:52:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:52:03,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:52:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 17:52:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:03,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:52:03,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:52:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:03,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:52:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:03,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692786528] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:52:03,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523926201] [2021-11-25 17:52:03,663 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2021-11-25 17:52:03,663 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:52:03,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:52:03,664 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:52:03,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:52:04,159 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 [2021-11-25 17:52:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:05,677 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:52:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:52:05,945 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 [2021-11-25 17:52:06,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:08,101 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:52:08,102 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 [2021-11-25 17:52:08,309 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 [2021-11-25 17:52:08,423 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:52:08,434 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:52:08,497 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 [2021-11-25 17:52:08,517 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 [2021-11-25 17:52:08,529 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 [2021-11-25 17:52:08,650 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 [2021-11-25 17:52:08,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:08,665 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 52 treesize of output 51 [2021-11-25 17:52:08,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:08,691 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 52 treesize of output 51 [2021-11-25 17:52:08,808 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 [2021-11-25 17:52:08,819 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 [2021-11-25 17:52:08,831 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 [2021-11-25 17:52:09,223 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 6 treesize of output 5 [2021-11-25 17:52:11,352 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:52:11,405 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:52:11,424 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-25 17:52:11,548 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:52:11,569 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:52:28,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [523926201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:28,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:52:28,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2021-11-25 17:52:28,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92449914] [2021-11-25 17:52:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:28,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 17:52:28,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 17:52:28,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:52:28,684 INFO L87 Difference]: Start difference. First operand 2039 states and 2980 transitions. Second operand has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:52:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:32,293 INFO L93 Difference]: Finished difference Result 3369 states and 4959 transitions. [2021-11-25 17:52:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 17:52:32,294 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-11-25 17:52:32,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:32,308 INFO L225 Difference]: With dead ends: 3369 [2021-11-25 17:52:32,309 INFO L226 Difference]: Without dead ends: 2054 [2021-11-25 17:52:32,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:52:32,314 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 5 mSDsluCounter, 10936 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11229 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1541 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11229 Invalid, 2274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 1541 Unchecked, 3.5s Time] [2021-11-25 17:52:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-25 17:52:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2021-11-25 17:52:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1281 states have (on average 1.3091334894613582) internal successors, (1677), 1290 states have internal predecessors, (1677), 662 states have call successors, (662), 113 states have call predecessors, (662), 110 states have return successors, (660), 657 states have call predecessors, (660), 660 states have call successors, (660) [2021-11-25 17:52:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2999 transitions. [2021-11-25 17:52:32,440 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2999 transitions. Word has length 40 [2021-11-25 17:52:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:32,440 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 2999 transitions. [2021-11-25 17:52:32,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:52:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2999 transitions. [2021-11-25 17:52:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 17:52:32,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:32,443 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, 1] [2021-11-25 17:52:32,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 17:52:32,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 17:52:32,652 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:52:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash -465151697, now seen corresponding path program 1 times [2021-11-25 17:52:32,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:32,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155162783] [2021-11-25 17:52:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:32,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:52:32,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:32,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155162783] [2021-11-25 17:52:32,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155162783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:52:32,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962986690] [2021-11-25 17:52:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:32,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:52:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:52:32,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:52:32,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 17:52:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:52:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:52:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:52:33,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:52:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:52:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962986690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:52:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915349156] [2021-11-25 17:52:33,322 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-25 17:52:33,322 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:52:33,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:52:33,323 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:52:33,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:52:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:35,931 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:52:35,953 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 [2021-11-25 17:52:36,144 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 [2021-11-25 17:52:36,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:36,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 17:52:36,375 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 [2021-11-25 17:52:36,579 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 [2021-11-25 17:52:37,332 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 [2021-11-25 17:52:37,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:37,529 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 [2021-11-25 17:52:37,587 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 12 treesize of output 1 [2021-11-25 17:52:37,773 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 [2021-11-25 17:52:42,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,305 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 6512 treesize of output 6175 [2021-11-25 17:52:42,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:42,921 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 6508 treesize of output 6171 [2021-11-25 17:52:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:52:43,581 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 6513 treesize of output 6232 [2021-11-25 17:52:44,544 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 22 treesize of output 1 [2021-11-25 17:52:52,037 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 [2021-11-25 17:52:52,047 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 [2021-11-25 17:52:52,056 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 [2021-11-25 17:52:52,265 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 6 treesize of output 5 [2021-11-25 17:52:55,152 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2021-11-25 17:52:55,179 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 17:52:55,188 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2021-11-25 17:52:55,266 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 17:52:55,276 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:53:11,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [915349156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:11,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:53:11,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 3, 4] total 35 [2021-11-25 17:53:11,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106414029] [2021-11-25 17:53:11,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:11,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 17:53:11,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 17:53:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:53:11,743 INFO L87 Difference]: Start difference. First operand 2054 states and 2999 transitions. Second operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-11-25 17:53:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:14,651 INFO L93 Difference]: Finished difference Result 2080 states and 3037 transitions. [2021-11-25 17:53:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 17:53:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 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 39 [2021-11-25 17:53:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:14,666 INFO L225 Difference]: With dead ends: 2080 [2021-11-25 17:53:14,666 INFO L226 Difference]: Without dead ends: 2077 [2021-11-25 17:53:14,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:53:14,668 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 4 mSDsluCounter, 12736 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13030 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1750 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:14,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 13030 Invalid, 2320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 568 Invalid, 0 Unknown, 1750 Unchecked, 2.7s Time] [2021-11-25 17:53:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2021-11-25 17:53:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2070. [2021-11-25 17:53:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1295 states have (on average 1.311969111969112) internal successors, (1699), 1304 states have internal predecessors, (1699), 663 states have call successors, (663), 114 states have call predecessors, (663), 111 states have return successors, (661), 658 states have call predecessors, (661), 661 states have call successors, (661) [2021-11-25 17:53:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3023 transitions. [2021-11-25 17:53:14,800 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3023 transitions. Word has length 39 [2021-11-25 17:53:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:14,800 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 3023 transitions. [2021-11-25 17:53:14,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-11-25 17:53:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3023 transitions. [2021-11-25 17:53:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 17:53:14,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:14,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:53:14,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 17:53:15,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 17:53:15,020 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:53:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 483602202, now seen corresponding path program 1 times [2021-11-25 17:53:15,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:15,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709413016] [2021-11-25 17:53:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:15,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:15,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:15,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709413016] [2021-11-25 17:53:15,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709413016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:53:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936967213] [2021-11-25 17:53:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:15,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:15,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:15,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:53:15,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 17:53:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:53:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:53:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:15,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:53:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:15,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936967213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:53:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804097915] [2021-11-25 17:53:15,723 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-25 17:53:15,723 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:53:15,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:53:15,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:53:15,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:53:16,268 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 [2021-11-25 17:53:16,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:53:17,734 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:53:17,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:53:18,039 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 [2021-11-25 17:53:18,148 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 [2021-11-25 17:53:18,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:53:20,472 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:53:20,473 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 [2021-11-25 17:53:20,657 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:53:20,666 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:53:20,761 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 [2021-11-25 17:53:20,771 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 [2021-11-25 17:53:20,793 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 [2021-11-25 17:53:20,909 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 [2021-11-25 17:53:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:53:20,941 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 52 treesize of output 51 [2021-11-25 17:53:20,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:53:20,977 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 52 treesize of output 51 [2021-11-25 17:53:21,091 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 [2021-11-25 17:53:21,107 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 [2021-11-25 17:53:21,121 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 [2021-11-25 17:53:21,496 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 6 treesize of output 5 [2021-11-25 17:53:24,353 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:53:24,406 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 131 for LOIs [2021-11-25 17:53:24,423 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 135 for LOIs [2021-11-25 17:53:24,441 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:53:24,460 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-25 17:53:24,747 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:53:24,768 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:53:51,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71786#(and (<= 46 |~#fst_pci_dev_id~0.base|) (<= |~#fst_card_array~0.offset| 0) (<= |~#fst_tx_task~0.offset| 0) (<= |~#fst_work_intq~0.offset| 0) (<= 45 |~#fst_excluded_list~0.base|) (<= 0 |#NULL.base|) (<= 0 |~#fst_pci_dev_id~0.offset|) (<= ~LDV_IN_INTERRUPT~0 1) (<= |~#fst_work_q_lock~0.offset| 0) (<= 0 ~ldv_module_refcounter~0) (<= ~__mod_pci_device_table~0.subdevice 0) (<= 0 |~#fst_card_array~0.offset|) (<= 0 ~__mod_pci_device_table~0.subvendor) (<= |~#type_strings~0.base| 53) (<= 0 ~__mod_pci_device_table~0.class) (<= |~#type_strings~0.offset| 0) (<= 0 |~#type_strings~0.offset|) (<= |~#fst_driver~0.offset| 0) (<= 0 |~#fst_ops~0.offset|) (<= 0 |~#fst_int_task~0.offset|) (<= 49 |~#fst_card_array~0.base|) (<= |~#fst_excluded_list~0.offset| 0) (<= 48 |~#fst_int_task~0.base|) (<= |~#fst_driver~0.base| 55) (<= 53 |~#type_strings~0.base|) (<= ~__mod_pci_device_table~0.driver_data 0) (<= 54 |~#fst_ops~0.base|) (<= 1 ~LDV_IN_INTERRUPT~0) (<= |~#fst_pci_dev_id~0.offset| 0) (<= 0 ~__mod_pci_device_table~0.vendor) (<= |~#fst_work_q_lock~0.base| 50) (<= |~#fst_work_txq~0.offset| 0) (<= ~__mod_pci_device_table~0.device 0) (<= 0 |~#fst_excluded_list~0.offset|) (<= ~fst_txq_high~0 12) (not (= ~ldv_module_refcounter~0 1)) (<= |#NULL.offset| 0) (<= ~__mod_pci_device_table~0.class_mask 0) (<= |~#fst_excluded_list~0.base| 45) (<= 0 |~#fst_tx_task~0.offset|) (<= 51 |~#fst_work_txq~0.base|) (<= |~#fst_pci_dev_id~0.base| 46) (<= ~fst_txq_low~0 8) (<= 12 ~fst_txq_high~0) (<= |~#fst_work_intq~0.base| 52) (<= |~#fst_int_task~0.base| 48) (<= ~fst_max_reads~0 7) (<= 55 |~#fst_driver~0.base|) (<= 0 ~__mod_pci_device_table~0.subdevice) (<= ~__mod_pci_device_table~0.vendor 0) (<= 0 |~#fst_work_q_lock~0.offset|) (<= 0 |~#fst_work_txq~0.offset|) (<= ~__mod_pci_device_table~0.subvendor 0) (<= |#NULL.base| 0) (<= |~#fst_card_array~0.base| 49) (<= |~#fst_ops~0.base| 54) (<= |~#fst_ops~0.offset| 0) (<= 0 |~#fst_driver~0.offset|) (<= 0 ~__mod_pci_device_table~0.driver_data) (<= 47 |~#fst_tx_task~0.base|) (<= 8 ~fst_txq_low~0) (<= 50 |~#fst_work_q_lock~0.base|) (<= 0 ~__mod_pci_device_table~0.class_mask) (<= 0 ~__mod_pci_device_table~0.device) (<= ~fst_excluded_cards~0 0) (<= 52 |~#fst_work_intq~0.base|) (<= 0 |#NULL.offset|) (<= |~#fst_work_txq~0.base| 51) (<= 7 ~fst_max_reads~0) (<= ~__mod_pci_device_table~0.class 0) (<= |~#fst_tx_task~0.base| 47) (<= |~#fst_int_task~0.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |~#fst_work_intq~0.offset|) (<= 0 ~fst_excluded_cards~0))' at error location [2021-11-25 17:53:51,702 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:53:51,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:53:51,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-25 17:53:51,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774555614] [2021-11-25 17:53:51,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:53:51,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:53:51,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:51,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:53:51,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:53:51,704 INFO L87 Difference]: Start difference. First operand 2070 states and 3023 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 17:53:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:52,540 INFO L93 Difference]: Finished difference Result 4140 states and 6048 transitions. [2021-11-25 17:53:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:53:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 42 [2021-11-25 17:53:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:52,551 INFO L225 Difference]: With dead ends: 4140 [2021-11-25 17:53:52,551 INFO L226 Difference]: Without dead ends: 2073 [2021-11-25 17:53:52,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:53:52,558 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 0 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:52,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3109 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:53:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-11-25 17:53:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2021-11-25 17:53:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1298 states have (on average 1.3112480739599384) internal successors, (1702), 1307 states have internal predecessors, (1702), 663 states have call successors, (663), 114 states have call predecessors, (663), 111 states have return successors, (661), 658 states have call predecessors, (661), 661 states have call successors, (661) [2021-11-25 17:53:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3026 transitions. [2021-11-25 17:53:52,693 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3026 transitions. Word has length 42 [2021-11-25 17:53:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:52,693 INFO L470 AbstractCegarLoop]: Abstraction has 2073 states and 3026 transitions. [2021-11-25 17:53:52,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 17:53:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3026 transitions. [2021-11-25 17:53:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 17:53:52,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:52,696 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:53:52,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 17:53:52,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:52,920 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:53:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1964335399, now seen corresponding path program 2 times [2021-11-25 17:53:52,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237562534] [2021-11-25 17:53:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:52,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:53,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237562534] [2021-11-25 17:53:53,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237562534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:53:53,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838099147] [2021-11-25 17:53:53,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:53:53,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:53,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:53:53,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 17:53:53,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 17:53:53,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:53:53,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 17:53:53,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:53:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 17:53:53,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:53:53,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838099147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:53,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:53:53,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2021-11-25 17:53:53,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596039666] [2021-11-25 17:53:53,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:53,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 17:53:53,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 17:53:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:53:53,825 INFO L87 Difference]: Start difference. First operand 2073 states and 3026 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 17:54:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:04,095 INFO L93 Difference]: Finished difference Result 7207 states and 10669 transitions. [2021-11-25 17:54:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:54:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 45 [2021-11-25 17:54:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:04,151 INFO L225 Difference]: With dead ends: 7207 [2021-11-25 17:54:04,152 INFO L226 Difference]: Without dead ends: 5887 [2021-11-25 17:54:04,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:54:04,160 INFO L933 BasicCegarLoop]: 2337 mSDtfsCounter, 3371 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 8103 mSolverCounterSat, 3051 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 11154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3051 IncrementalHoareTripleChecker+Valid, 8103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:04,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3809 Valid, 5646 Invalid, 11154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3051 Valid, 8103 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-25 17:54:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2021-11-25 17:54:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5863. [2021-11-25 17:54:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5863 states, 3661 states have (on average 1.3179459164162797) internal successors, (4825), 3688 states have internal predecessors, (4825), 1924 states have call successors, (1924), 279 states have call predecessors, (1924), 277 states have return successors, (1925), 1918 states have call predecessors, (1925), 1922 states have call successors, (1925) [2021-11-25 17:54:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 8674 transitions. [2021-11-25 17:54:04,564 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 8674 transitions. Word has length 45 [2021-11-25 17:54:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:04,566 INFO L470 AbstractCegarLoop]: Abstraction has 5863 states and 8674 transitions. [2021-11-25 17:54:04,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-25 17:54:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 8674 transitions. [2021-11-25 17:54:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 17:54:04,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:04,569 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:54:04,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:04,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:04,783 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:54:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1748923850, now seen corresponding path program 1 times [2021-11-25 17:54:04,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:04,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141871985] [2021-11-25 17:54:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:04,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 17:54:04,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:04,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141871985] [2021-11-25 17:54:04,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141871985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:04,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:04,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:54:04,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054007216] [2021-11-25 17:54:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:04,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:54:04,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:54:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:54:04,918 INFO L87 Difference]: Start difference. First operand 5863 states and 8674 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 17:54:09,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:09,470 INFO L93 Difference]: Finished difference Result 9017 states and 13432 transitions. [2021-11-25 17:54:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:54:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2021-11-25 17:54:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:09,501 INFO L225 Difference]: With dead ends: 9017 [2021-11-25 17:54:09,502 INFO L226 Difference]: Without dead ends: 9014 [2021-11-25 17:54:09,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:54:09,507 INFO L933 BasicCegarLoop]: 2867 mSDtfsCounter, 2589 mSDsluCounter, 3873 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 6179 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:09,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 6179 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3199 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 17:54:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9014 states. [2021-11-25 17:54:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9014 to 8465. [2021-11-25 17:54:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 5280 states have (on average 1.318560606060606) internal successors, (6962), 5320 states have internal predecessors, (6962), 2797 states have call successors, (2797), 388 states have call predecessors, (2797), 387 states have return successors, (2801), 2791 states have call predecessors, (2801), 2795 states have call successors, (2801) [2021-11-25 17:54:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 12560 transitions. [2021-11-25 17:54:10,010 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 12560 transitions. Word has length 45 [2021-11-25 17:54:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:10,011 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 12560 transitions. [2021-11-25 17:54:10,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 17:54:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 12560 transitions. [2021-11-25 17:54:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 17:54:10,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:10,013 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:54:10,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:54:10,014 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:54:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1360329180, now seen corresponding path program 1 times [2021-11-25 17:54:10,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:10,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792894748] [2021-11-25 17:54:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:10,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:54:10,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792894748] [2021-11-25 17:54:10,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792894748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:10,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:10,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:54:10,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681769381] [2021-11-25 17:54:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:10,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:54:10,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:54:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:54:10,118 INFO L87 Difference]: Start difference. First operand 8465 states and 12560 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 17:54:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:12,794 INFO L93 Difference]: Finished difference Result 10841 states and 16208 transitions. [2021-11-25 17:54:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:54:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-25 17:54:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:12,830 INFO L225 Difference]: With dead ends: 10841 [2021-11-25 17:54:12,830 INFO L226 Difference]: Without dead ends: 10833 [2021-11-25 17:54:12,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:54:12,835 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 2075 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:12,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2290 Valid, 2987 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 17:54:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10833 states. [2021-11-25 17:54:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10833 to 9707. [2021-11-25 17:54:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9707 states, 6055 states have (on average 1.318579686209744) internal successors, (7984), 6100 states have internal predecessors, (7984), 3209 states have call successors, (3209), 443 states have call predecessors, (3209), 442 states have return successors, (3213), 3203 states have call predecessors, (3213), 3207 states have call successors, (3213) [2021-11-25 17:54:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9707 states to 9707 states and 14406 transitions. [2021-11-25 17:54:13,411 INFO L78 Accepts]: Start accepts. Automaton has 9707 states and 14406 transitions. Word has length 44 [2021-11-25 17:54:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:13,412 INFO L470 AbstractCegarLoop]: Abstraction has 9707 states and 14406 transitions. [2021-11-25 17:54:13,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 17:54:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 9707 states and 14406 transitions. [2021-11-25 17:54:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 17:54:13,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:13,414 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:54:13,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:54:13,415 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:54:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1951295833, now seen corresponding path program 1 times [2021-11-25 17:54:13,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:13,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916047631] [2021-11-25 17:54:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:13,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 17:54:13,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916047631] [2021-11-25 17:54:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916047631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:13,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:13,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:54:13,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742295815] [2021-11-25 17:54:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:13,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:54:13,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:54:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:54:13,522 INFO L87 Difference]: Start difference. First operand 9707 states and 14406 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:54:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:15,440 INFO L93 Difference]: Finished difference Result 14567 states and 22120 transitions. [2021-11-25 17:54:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:54:15,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2021-11-25 17:54:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:15,497 INFO L225 Difference]: With dead ends: 14567 [2021-11-25 17:54:15,497 INFO L226 Difference]: Without dead ends: 14561 [2021-11-25 17:54:15,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:54:15,506 INFO L933 BasicCegarLoop]: 1821 mSDtfsCounter, 974 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:15,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 4315 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 17:54:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14561 states. [2021-11-25 17:54:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14561 to 9719. [2021-11-25 17:54:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9719 states, 6063 states have (on average 1.318159327065809) internal successors, (7992), 6108 states have internal predecessors, (7992), 3213 states have call successors, (3213), 443 states have call predecessors, (3213), 442 states have return successors, (3217), 3207 states have call predecessors, (3217), 3211 states have call successors, (3217) [2021-11-25 17:54:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9719 states to 9719 states and 14422 transitions. [2021-11-25 17:54:16,299 INFO L78 Accepts]: Start accepts. Automaton has 9719 states and 14422 transitions. Word has length 47 [2021-11-25 17:54:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:16,299 INFO L470 AbstractCegarLoop]: Abstraction has 9719 states and 14422 transitions. [2021-11-25 17:54:16,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:54:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9719 states and 14422 transitions. [2021-11-25 17:54:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 17:54:16,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:16,302 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:54:16,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:54:16,302 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:54:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -924560926, now seen corresponding path program 1 times [2021-11-25 17:54:16,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:16,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455810482] [2021-11-25 17:54:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:16,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:54:16,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:16,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455810482] [2021-11-25 17:54:16,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455810482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:16,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846540345] [2021-11-25 17:54:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:16,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:16,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:16,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:16,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 17:54:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:16,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:54:16,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:54:16,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:54:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:54:17,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846540345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:54:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426663543] [2021-11-25 17:54:17,065 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-25 17:54:17,065 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:54:17,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:54:17,066 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:54:17,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:54:17,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:20,042 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:54:20,043 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 [2021-11-25 17:54:20,251 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 [2021-11-25 17:54:20,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:20,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 17:54:20,517 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 [2021-11-25 17:54:20,583 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 [2021-11-25 17:54:21,364 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 [2021-11-25 17:54:21,568 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 [2021-11-25 17:54:21,641 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 12 treesize of output 1 [2021-11-25 17:54:21,961 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 [2021-11-25 17:54:26,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:26,493 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 6512 treesize of output 6175 [2021-11-25 17:54:27,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,180 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 6517 treesize of output 6236 [2021-11-25 17:54:27,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:54:27,807 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 6508 treesize of output 6171 [2021-11-25 17:54:28,774 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 22 treesize of output 1 [2021-11-25 17:54:36,443 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 [2021-11-25 17:54:36,459 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 [2021-11-25 17:54:36,468 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 [2021-11-25 17:54:36,667 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 6 treesize of output 5 [2021-11-25 17:54:39,344 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2021-11-25 17:54:39,371 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 17:54:39,380 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2021-11-25 17:54:39,431 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 17:54:39,441 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:54:53,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [426663543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:53,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:54:53,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [7, 6, 7] total 38 [2021-11-25 17:54:53,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879504608] [2021-11-25 17:54:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:53,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 17:54:53,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 17:54:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 17:54:53,673 INFO L87 Difference]: Start difference. First operand 9719 states and 14422 transitions. Second operand has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:54:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:58,407 INFO L93 Difference]: Finished difference Result 17385 states and 25851 transitions. [2021-11-25 17:54:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 17:54:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2021-11-25 17:54:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:58,440 INFO L225 Difference]: With dead ends: 17385 [2021-11-25 17:54:58,440 INFO L226 Difference]: Without dead ends: 9724 [2021-11-25 17:54:58,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 17:54:58,466 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 6 mSDsluCounter, 11998 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12168 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2474 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:58,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12168 Invalid, 3205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 0 Unknown, 2474 Unchecked, 4.4s Time] [2021-11-25 17:54:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9724 states. [2021-11-25 17:54:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9724 to 9713. [2021-11-25 17:54:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9713 states, 6059 states have (on average 1.3183693678824888) internal successors, (7988), 6104 states have internal predecessors, (7988), 3212 states have call successors, (3212), 442 states have call predecessors, (3212), 441 states have return successors, (3216), 3206 states have call predecessors, (3216), 3210 states have call successors, (3216) [2021-11-25 17:54:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9713 states to 9713 states and 14416 transitions. [2021-11-25 17:54:59,143 INFO L78 Accepts]: Start accepts. Automaton has 9713 states and 14416 transitions. Word has length 49 [2021-11-25 17:54:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:59,144 INFO L470 AbstractCegarLoop]: Abstraction has 9713 states and 14416 transitions. [2021-11-25 17:54:59,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:54:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9713 states and 14416 transitions. [2021-11-25 17:54:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 17:54:59,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:59,147 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:54:59,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:59,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 17:54:59,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:54:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1982060955, now seen corresponding path program 1 times [2021-11-25 17:54:59,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:59,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091239803] [2021-11-25 17:54:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:59,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 17:54:59,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:59,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091239803] [2021-11-25 17:54:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091239803] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:59,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473468849] [2021-11-25 17:54:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:59,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:59,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:59,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:59,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 17:54:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:59,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:54:59,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:55:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 17:55:00,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:55:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 17:55:00,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473468849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:55:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154336883] [2021-11-25 17:55:00,215 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2021-11-25 17:55:00,215 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:55:00,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:55:00,215 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:55:00,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:55:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:55:02,259 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:55:02,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:55:02,629 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 [2021-11-25 17:55:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:55:05,161 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:55:05,162 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 [2021-11-25 17:55:05,383 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 [2021-11-25 17:55:05,484 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 [2021-11-25 17:55:05,526 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:55:05,537 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:55:05,594 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 [2021-11-25 17:55:05,616 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 [2021-11-25 17:55:05,629 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 [2021-11-25 17:55:05,746 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 [2021-11-25 17:55:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:55:05,775 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 52 treesize of output 51 [2021-11-25 17:55:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:55:05,786 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 52 treesize of output 51 [2021-11-25 17:55:05,863 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 [2021-11-25 17:55:05,877 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 [2021-11-25 17:55:05,890 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 [2021-11-25 17:55:06,264 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 6 treesize of output 5 [2021-11-25 17:55:14,369 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:55:14,421 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 133 for LOIs [2021-11-25 17:55:14,439 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:55:14,457 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 131 for LOIs [2021-11-25 17:55:14,641 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:55:14,662 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 133 for LOIs [2021-11-25 17:55:14,681 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:55:56,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1154336883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:55:56,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:55:56,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [4, 6, 7] total 48 [2021-11-25 17:55:56,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87749630] [2021-11-25 17:55:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:55:56,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 17:55:56,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 17:55:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 17:55:56,423 INFO L87 Difference]: Start difference. First operand 9713 states and 14416 transitions. Second operand has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:56:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:03,156 INFO L93 Difference]: Finished difference Result 9780 states and 14495 transitions. [2021-11-25 17:56:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-25 17:56:03,157 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2021-11-25 17:56:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:03,188 INFO L225 Difference]: With dead ends: 9780 [2021-11-25 17:56:03,189 INFO L226 Difference]: Without dead ends: 9773 [2021-11-25 17:56:03,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 17:56:03,196 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 13 mSDsluCounter, 18217 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17885 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1471 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:03,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 17885 Invalid, 2735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1261 Invalid, 0 Unknown, 1471 Unchecked, 6.3s Time] [2021-11-25 17:56:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2021-11-25 17:56:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 9770. [2021-11-25 17:56:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9770 states, 6100 states have (on average 1.318032786885246) internal successors, (8040), 6145 states have internal predecessors, (8040), 3220 states have call successors, (3220), 450 states have call predecessors, (3220), 449 states have return successors, (3224), 3214 states have call predecessors, (3224), 3218 states have call successors, (3224) [2021-11-25 17:56:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9770 states to 9770 states and 14484 transitions. [2021-11-25 17:56:03,813 INFO L78 Accepts]: Start accepts. Automaton has 9770 states and 14484 transitions. Word has length 51 [2021-11-25 17:56:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:03,814 INFO L470 AbstractCegarLoop]: Abstraction has 9770 states and 14484 transitions. [2021-11-25 17:56:03,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:56:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states and 14484 transitions. [2021-11-25 17:56:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 17:56:03,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:03,817 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:56:03,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 17:56:04,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 17:56:04,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash -479221084, now seen corresponding path program 1 times [2021-11-25 17:56:04,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090378359] [2021-11-25 17:56:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:04,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 17:56:04,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:04,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090378359] [2021-11-25 17:56:04,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090378359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:56:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770253041] [2021-11-25 17:56:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:04,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:56:04,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:56:04,141 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:56:04,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 17:56:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:04,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:56:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:56:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 17:56:04,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:56:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 17:56:04,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770253041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:56:04,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [969273998] [2021-11-25 17:56:04,812 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2021-11-25 17:56:04,812 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:56:04,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:56:04,813 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:56:04,813 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:56:05,287 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 [2021-11-25 17:56:05,337 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 [2021-11-25 17:56:05,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:56:06,975 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:56:06,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:56:07,241 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 [2021-11-25 17:56:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:56:09,526 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:56:09,526 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 [2021-11-25 17:56:09,715 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:56:09,723 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:56:09,776 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 [2021-11-25 17:56:09,796 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 [2021-11-25 17:56:09,809 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 [2021-11-25 17:56:09,925 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 [2021-11-25 17:56:09,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:56:09,949 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 52 treesize of output 51 [2021-11-25 17:56:09,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:56:09,960 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 52 treesize of output 51 [2021-11-25 17:56:10,034 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 [2021-11-25 17:56:10,088 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 [2021-11-25 17:56:10,107 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 [2021-11-25 17:56:10,526 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 6 treesize of output 5 [2021-11-25 17:56:18,951 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:56:19,004 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 133 for LOIs [2021-11-25 17:56:19,022 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:56:19,040 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 131 for LOIs [2021-11-25 17:56:19,224 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:56:19,245 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 133 for LOIs [2021-11-25 17:56:19,264 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:57:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [969273998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:03,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:57:03,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [4, 6, 7] total 49 [2021-11-25 17:57:03,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845765382] [2021-11-25 17:57:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:03,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-25 17:57:03,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-25 17:57:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2021-11-25 17:57:03,785 INFO L87 Difference]: Start difference. First operand 9770 states and 14484 transitions. Second operand has 37 states, 29 states have (on average 1.206896551724138) internal successors, (35), 27 states have internal predecessors, (35), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:57:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:13,871 INFO L93 Difference]: Finished difference Result 9844 states and 14579 transitions. [2021-11-25 17:57:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-25 17:57:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 1.206896551724138) internal successors, (35), 27 states have internal predecessors, (35), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 52 [2021-11-25 17:57:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:13,893 INFO L225 Difference]: With dead ends: 9844 [2021-11-25 17:57:13,894 INFO L226 Difference]: Without dead ends: 9837 [2021-11-25 17:57:13,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2021-11-25 17:57:13,900 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 34 mSDsluCounter, 13548 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 13395 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1595 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:13,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 13395 Invalid, 3083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 1477 Invalid, 0 Unknown, 1595 Unchecked, 6.5s Time] [2021-11-25 17:57:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2021-11-25 17:57:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 9820. [2021-11-25 17:57:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9820 states, 6136 states have (on average 1.318122555410691) internal successors, (8088), 6181 states have internal predecessors, (8088), 3227 states have call successors, (3227), 457 states have call predecessors, (3227), 456 states have return successors, (3231), 3221 states have call predecessors, (3231), 3225 states have call successors, (3231) [2021-11-25 17:57:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9820 states to 9820 states and 14546 transitions. [2021-11-25 17:57:14,499 INFO L78 Accepts]: Start accepts. Automaton has 9820 states and 14546 transitions. Word has length 52 [2021-11-25 17:57:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:14,499 INFO L470 AbstractCegarLoop]: Abstraction has 9820 states and 14546 transitions. [2021-11-25 17:57:14,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 1.206896551724138) internal successors, (35), 27 states have internal predecessors, (35), 6 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:57:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand 9820 states and 14546 transitions. [2021-11-25 17:57:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 17:57:14,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:14,503 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:14,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 17:57:14,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:57:14,718 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:57:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1629435584, now seen corresponding path program 1 times [2021-11-25 17:57:14,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:14,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816551797] [2021-11-25 17:57:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:14,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:57:14,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816551797] [2021-11-25 17:57:14,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816551797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:57:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438710933] [2021-11-25 17:57:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:14,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:57:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:57:14,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:57:14,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 17:57:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:15,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:57:15,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:57:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:57:15,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:57:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 17:57:15,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438710933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:57:15,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538641456] [2021-11-25 17:57:15,526 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2021-11-25 17:57:15,526 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:57:15,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:57:15,527 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:57:15,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:57:16,050 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 [2021-11-25 17:57:16,116 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 [2021-11-25 17:57:16,197 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 [2021-11-25 17:57:16,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:57:17,725 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:57:17,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:57:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:57:20,205 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:57:20,205 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 [2021-11-25 17:57:20,388 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:57:20,397 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:57:20,453 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 [2021-11-25 17:57:20,468 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 [2021-11-25 17:57:20,487 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 [2021-11-25 17:57:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:57:20,606 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 52 treesize of output 51 [2021-11-25 17:57:20,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:57:20,617 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 52 treesize of output 51 [2021-11-25 17:57:20,632 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 [2021-11-25 17:57:20,706 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 [2021-11-25 17:57:20,716 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 [2021-11-25 17:57:20,736 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 [2021-11-25 17:57:21,097 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 6 treesize of output 5 [2021-11-25 17:57:25,767 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 137 for LOIs [2021-11-25 17:57:25,820 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:57:25,839 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 170 for LOIs [2021-11-25 17:57:25,942 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:57:25,962 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:57:54,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1538641456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:54,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:57:54,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [7, 6, 7] total 41 [2021-11-25 17:57:54,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885164706] [2021-11-25 17:57:54,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:54,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 17:57:54,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 17:57:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1419, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:57:54,287 INFO L87 Difference]: Start difference. First operand 9820 states and 14546 transitions. Second operand has 30 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:57:58,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:00,618 INFO L93 Difference]: Finished difference Result 17491 states and 25982 transitions. [2021-11-25 17:58:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 17:58:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 52 [2021-11-25 17:58:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:00,639 INFO L225 Difference]: With dead ends: 17491 [2021-11-25 17:58:00,639 INFO L226 Difference]: Without dead ends: 9830 [2021-11-25 17:58:00,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=221, Invalid=1419, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:58:00,664 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 7 mSDsluCounter, 10734 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1550 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:00,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10796 Invalid, 2558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1007 Invalid, 0 Unknown, 1550 Unchecked, 5.9s Time] [2021-11-25 17:58:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2021-11-25 17:58:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 9822. [2021-11-25 17:58:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9822 states, 6138 states have (on average 1.3181818181818181) internal successors, (8091), 6182 states have internal predecessors, (8091), 3227 states have call successors, (3227), 457 states have call predecessors, (3227), 456 states have return successors, (3231), 3222 states have call predecessors, (3231), 3225 states have call successors, (3231) [2021-11-25 17:58:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9822 states to 9822 states and 14549 transitions. [2021-11-25 17:58:01,217 INFO L78 Accepts]: Start accepts. Automaton has 9822 states and 14549 transitions. Word has length 52 [2021-11-25 17:58:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:01,217 INFO L470 AbstractCegarLoop]: Abstraction has 9822 states and 14549 transitions. [2021-11-25 17:58:01,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-25 17:58:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9822 states and 14549 transitions. [2021-11-25 17:58:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 17:58:01,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:01,221 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:01,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 17:58:01,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:58:01,447 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1801374284, now seen corresponding path program 1 times [2021-11-25 17:58:01,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:01,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676035945] [2021-11-25 17:58:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:01,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:01,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676035945] [2021-11-25 17:58:01,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676035945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:58:01,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373540269] [2021-11-25 17:58:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:01,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:58:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:58:01,544 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:58:01,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 17:58:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:02,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:58:02,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:58:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:02,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:58:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 17:58:02,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373540269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:58:02,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766463877] [2021-11-25 17:58:02,300 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2021-11-25 17:58:02,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:58:02,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:58:02,301 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:58:02,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:58:02,910 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 [2021-11-25 17:58:03,039 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 [2021-11-25 17:58:03,095 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 [2021-11-25 17:58:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:58:04,570 INFO L354 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2021-11-25 17:58:04,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1487 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 [2021-11-25 17:58:04,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:58:07,029 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:58:07,029 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 [2021-11-25 17:58:07,215 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:58:07,224 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 49 [2021-11-25 17:58:07,281 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 [2021-11-25 17:58:07,294 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 [2021-11-25 17:58:07,311 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 [2021-11-25 17:58:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:58:07,486 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 52 treesize of output 51 [2021-11-25 17:58:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:58:07,496 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 52 treesize of output 51 [2021-11-25 17:58:07,514 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 [2021-11-25 17:58:07,594 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 [2021-11-25 17:58:07,606 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 [2021-11-25 17:58:07,627 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 [2021-11-25 17:58:07,956 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 6 treesize of output 5 [2021-11-25 17:58:08,520 INFO L354 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2021-11-25 17:58:08,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2021-11-25 17:58:08,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 17:58:09,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 17 [2021-11-25 17:58:10,333 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 17:58:10,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 17:58:10,406 INFO L354 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2021-11-25 17:58:10,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2021-11-25 17:58:11,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 17 [2021-11-25 17:58:14,582 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 163 for LOIs [2021-11-25 17:58:14,643 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 134 for LOIs [2021-11-25 17:58:14,669 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 163 for LOIs [2021-11-25 17:58:14,762 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 144 for LOIs [2021-11-25 17:58:14,842 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:58:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1766463877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:42,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:58:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [7, 6, 7] total 42 [2021-11-25 17:58:42,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47108777] [2021-11-25 17:58:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:42,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 17:58:42,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 17:58:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2021-11-25 17:58:42,906 INFO L87 Difference]: Start difference. First operand 9822 states and 14549 transitions. Second operand has 31 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:58:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:59,208 INFO L93 Difference]: Finished difference Result 17680 states and 26285 transitions. [2021-11-25 17:58:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 17:58:59,209 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 55 [2021-11-25 17:58:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:59,226 INFO L225 Difference]: With dead ends: 17680 [2021-11-25 17:58:59,226 INFO L226 Difference]: Without dead ends: 10019 [2021-11-25 17:58:59,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 17:58:59,241 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 144 mSDsluCounter, 12359 mSDsCounter, 0 mSdLazyCounter, 3950 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 12422 SdHoareTripleChecker+Invalid, 5944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1978 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:59,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 12422 Invalid, 5944 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3950 Invalid, 0 Unknown, 1978 Unchecked, 14.5s Time] [2021-11-25 17:58:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2021-11-25 17:58:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 9837. [2021-11-25 17:58:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9837 states, 6150 states have (on average 1.3183739837398374) internal successors, (8108), 6195 states have internal predecessors, (8108), 3229 states have call successors, (3229), 458 states have call predecessors, (3229), 457 states have return successors, (3233), 3223 states have call predecessors, (3233), 3227 states have call successors, (3233) [2021-11-25 17:58:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9837 states to 9837 states and 14570 transitions. [2021-11-25 17:58:59,806 INFO L78 Accepts]: Start accepts. Automaton has 9837 states and 14570 transitions. Word has length 55 [2021-11-25 17:58:59,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:59,807 INFO L470 AbstractCegarLoop]: Abstraction has 9837 states and 14570 transitions. [2021-11-25 17:58:59,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.4) internal successors, (35), 23 states have internal predecessors, (35), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 17:58:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9837 states and 14570 transitions. [2021-11-25 17:58:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 17:58:59,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:59,811 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:59,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-25 17:59:00,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:59:00,023 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:59:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1577696389, now seen corresponding path program 1 times [2021-11-25 17:59:00,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:00,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937398020] [2021-11-25 17:59:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:00,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 17:59:00,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:00,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937398020] [2021-11-25 17:59:00,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937398020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:00,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:00,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:00,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320314231] [2021-11-25 17:59:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:00,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:00,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:00,093 INFO L87 Difference]: Start difference. First operand 9837 states and 14570 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 17:59:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:01,525 INFO L93 Difference]: Finished difference Result 21033 states and 31607 transitions. [2021-11-25 17:59:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2021-11-25 17:59:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:01,553 INFO L225 Difference]: With dead ends: 21033 [2021-11-25 17:59:01,554 INFO L226 Difference]: Without dead ends: 13369 [2021-11-25 17:59:01,568 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 [2021-11-25 17:59:01,569 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 453 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:01,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 2961 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:59:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13369 states. [2021-11-25 17:59:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13369 to 13361. [2021-11-25 17:59:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 8407 states have (on average 1.3292494349946473) internal successors, (11175), 8459 states have internal predecessors, (11175), 4496 states have call successors, (4496), 458 states have call predecessors, (4496), 457 states have return successors, (4500), 4490 states have call predecessors, (4500), 4494 states have call successors, (4500) [2021-11-25 17:59:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 20171 transitions. [2021-11-25 17:59:02,306 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 20171 transitions. Word has length 56 [2021-11-25 17:59:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:02,307 INFO L470 AbstractCegarLoop]: Abstraction has 13361 states and 20171 transitions. [2021-11-25 17:59:02,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 17:59:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 20171 transitions. [2021-11-25 17:59:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 17:59:02,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:02,312 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:02,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:59:02,312 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:59:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:02,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1616553800, now seen corresponding path program 1 times [2021-11-25 17:59:02,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:02,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415114764] [2021-11-25 17:59:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:02,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 17:59:02,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:02,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415114764] [2021-11-25 17:59:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415114764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:59:02,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583144989] [2021-11-25 17:59:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:02,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:59:02,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:59:02,403 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:59:02,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 17:59:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:02,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:59:02,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:59:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 17:59:02,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:59:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 17:59:03,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583144989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:59:03,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [428341003] [2021-11-25 17:59:03,062 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2021-11-25 17:59:03,062 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:59:03,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:59:03,063 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:59:03,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:59:03,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:05,845 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 17:59:05,846 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 [2021-11-25 17:59:06,093 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 [2021-11-25 17:59:06,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:06,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 17:59:06,455 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 [2021-11-25 17:59:06,531 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 [2021-11-25 17:59:07,273 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 [2021-11-25 17:59:07,323 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 12 treesize of output 1 [2021-11-25 17:59:07,532 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 [2021-11-25 17:59:07,755 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 [2021-11-25 17:59:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:12,265 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 6512 treesize of output 6175 [2021-11-25 17:59:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,122 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 6517 treesize of output 6236 [2021-11-25 17:59:13,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:59:13,733 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 6508 treesize of output 6171 [2021-11-25 17:59:14,693 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 22 treesize of output 1 [2021-11-25 17:59:22,171 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 [2021-11-25 17:59:22,180 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 [2021-11-25 17:59:22,187 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 [2021-11-25 17:59:22,416 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 6 treesize of output 5 [2021-11-25 17:59:33,873 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 171 for LOIs [2021-11-25 17:59:33,918 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 98 for LOIs [2021-11-25 17:59:33,926 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 97 for LOIs [2021-11-25 17:59:33,937 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 17:59:33,950 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 96 for LOIs [2021-11-25 17:59:34,143 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 17:59:34,155 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 98 for LOIs [2021-11-25 17:59:34,165 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:59:58,425 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '431435#(and (= |~#fst_tx_task~0.base| 47) (<= 1 ~ldv_module_refcounter~0) (= |~#fst_pci_dev_id~0.base| 46) (= ~LDV_IN_INTERRUPT~0 1) (= |~#fst_work_q_lock~0.base| 50) (= |~#type_strings~0.offset| 0) (= ~__mod_pci_device_table~0.class_mask 0) (= |~#fst_int_task~0.offset| 0) (= ~__mod_pci_device_table~0.subvendor 0) (= |~#fst_ops~0.base| 54) (= ~__mod_pci_device_table~0.class 0) (= |~#fst_work_intq~0.offset| 0) (= 55 |~#fst_driver~0.base|) (= 53 |~#type_strings~0.base|) (not (= ~ldv_module_refcounter~0 1)) (= |~#fst_int_task~0.base| 48) (= |~#fst_pci_dev_id~0.offset| 0) (= 12 ~fst_txq_high~0) (= 0 |~#fst_tx_task~0.offset|) (= |~#fst_excluded_list~0.offset| 0) (= ~fst_txq_low~0 8) (= 49 |~#fst_card_array~0.base|) (= 52 |~#fst_work_intq~0.base|) (= |~#fst_excluded_list~0.base| 45) (= ~fst_excluded_cards~0 0) (= ~__mod_pci_device_table~0.device 0) (<= ~ldv_module_refcounter~0 2) (= |~#fst_ops~0.offset| 0) (= 51 |~#fst_work_txq~0.base|) (= ~__mod_pci_device_table~0.driver_data 0) (= ~__mod_pci_device_table~0.vendor 0) (= ~__mod_pci_device_table~0.subdevice 0) (= |~#fst_driver~0.offset| 0) (= |#NULL.offset| 0) (= 7 ~fst_max_reads~0) (= |~#fst_work_q_lock~0.offset| 0) (<= 0 |#StackHeapBarrier|) (= |~#fst_work_txq~0.offset| 0) (= |#NULL.base| 0) (= |~#fst_card_array~0.offset| 0))' at error location [2021-11-25 17:59:58,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:59:58,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:59:58,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-25 17:59:58,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871474446] [2021-11-25 17:59:58,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:59:58,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:59:58,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:59:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 17:59:58,428 INFO L87 Difference]: Start difference. First operand 13361 states and 20171 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 18:00:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:02,879 INFO L93 Difference]: Finished difference Result 26671 states and 40283 transitions. [2021-11-25 18:00:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:00:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 57 [2021-11-25 18:00:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:02,910 INFO L225 Difference]: With dead ends: 26671 [2021-11-25 18:00:02,910 INFO L226 Difference]: Without dead ends: 13316 [2021-11-25 18:00:02,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=392, Invalid=3390, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 18:00:02,934 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 930 mSDsluCounter, 11962 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:02,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 12528 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:00:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13316 states. [2021-11-25 18:00:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13316 to 9759. [2021-11-25 18:00:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9759 states, 6094 states have (on average 1.3160485723662618) internal successors, (8020), 6140 states have internal predecessors, (8020), 3218 states have call successors, (3218), 447 states have call predecessors, (3218), 446 states have return successors, (3222), 3211 states have call predecessors, (3222), 3216 states have call successors, (3222) [2021-11-25 18:00:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 14460 transitions. [2021-11-25 18:00:03,494 INFO L78 Accepts]: Start accepts. Automaton has 9759 states and 14460 transitions. Word has length 57 [2021-11-25 18:00:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:03,494 INFO L470 AbstractCegarLoop]: Abstraction has 9759 states and 14460 transitions. [2021-11-25 18:00:03,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 18:00:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 9759 states and 14460 transitions. [2021-11-25 18:00:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:00:03,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:03,499 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:03,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 18:00:03,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:03,707 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -808199122, now seen corresponding path program 1 times [2021-11-25 18:00:03,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:03,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764984309] [2021-11-25 18:00:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:03,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:00:03,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764984309] [2021-11-25 18:00:03,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764984309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:00:03,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986690133] [2021-11-25 18:00:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:03,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:03,877 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:00:03,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21ec6b2-48b0-4ece-9a96-ddb69445d396/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 18:00:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:04,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:00:04,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:00:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:00:04,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:00:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:00:04,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986690133] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:00:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1842149343] [2021-11-25 18:00:04,628 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-11-25 18:00:04,628 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:00:04,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:00:04,629 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:00:04,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:00:05,111 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 [2021-11-25 18:00:05,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:07,583 INFO L354 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2021-11-25 18:00:07,584 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 [2021-11-25 18:00:07,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:07,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 55 select indices, 55 select index equivalence classes, 1541 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 [2021-11-25 18:00:08,061 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 [2021-11-25 18:00:08,119 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 [2021-11-25 18:00:08,787 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 823 treesize of output 668 [2021-11-25 18:00:08,968 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 823 treesize of output 668 [2021-11-25 18:00:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:09,216 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 741 treesize of output 624 [2021-11-25 18:00:09,286 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 22 treesize of output 1 [2021-11-25 18:00:13,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:13,795 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 6522 treesize of output 6185 [2021-11-25 18:00:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:14,406 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 6518 treesize of output 6181 [2021-11-25 18:00:15,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:00:15,105 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 6523 treesize of output 6242 [2021-11-25 18:00:16,074 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 22 treesize of output 1 [2021-11-25 18:00:23,288 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 [2021-11-25 18:00:23,302 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 [2021-11-25 18:00:23,310 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 [2021-11-25 18:00:23,595 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 6 treesize of output 5 [2021-11-25 18:00:23,888 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:00:23,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 18:00:23,936 INFO L354 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2021-11-25 18:00:23,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2021-11-25 18:00:24,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 17 [2021-11-25 18:00:25,392 INFO L354 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2021-11-25 18:00:25,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 36 [2021-11-25 18:00:25,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 18:00:26,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 17 [2021-11-25 18:00:28,291 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 200 for LOIs [2021-11-25 18:00:28,515 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2021-11-25 18:00:28,524 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 126 for LOIs [2021-11-25 18:00:28,569 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2021-11-25 18:00:28,579 INFO L180 IcfgInterpreter]: Interpretation finished