./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/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_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:23:10,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:23:10,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:23:10,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:23:10,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:23:10,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:23:10,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:23:10,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:23:10,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:23:10,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:23:10,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:23:10,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:23:10,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:23:10,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:23:10,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:23:10,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:23:10,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:23:10,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:23:10,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:23:10,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:23:10,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:23:10,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:23:10,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:23:10,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:23:10,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:23:10,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:23:10,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:23:10,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:23:10,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:23:10,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:23:10,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:23:10,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:23:10,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:23:10,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:23:10,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:23:10,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:23:10,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:23:10,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:23:10,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:23:10,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:23:10,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:23:10,570 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:23:10,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:23:10,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:23:10,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:23:10,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:23:10,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:23:10,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:23:10,613 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:23:10,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:23:10,627 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:23:10,629 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:23:10,630 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:23:10,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:23:10,631 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:23:10,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:23:10,631 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:23:10,632 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:23:10,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:23:10,632 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:23:10,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:23:10,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:23:10,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:23:10,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:23:10,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:23:10,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:23:10,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:23:10,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:23:10,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:23:10,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:23:10,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:23:10,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:10,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:23:10,639 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:23:10,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:23:10,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:23:10,640 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:23:10,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:23:10,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:23:10,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:23:10,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2022-11-23 14:23:10,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:23:10,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:23:10,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:23:10,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:23:10,948 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:23:10,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-23 14:23:13,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:23:14,383 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:23:14,383 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-23 14:23:14,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/data/df568fdd9/a54838190dd344e3ad2e2c01533140fa/FLAGede247dce [2022-11-23 14:23:14,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/data/df568fdd9/a54838190dd344e3ad2e2c01533140fa [2022-11-23 14:23:14,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:23:14,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:23:14,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:14,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:23:14,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:23:14,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:14" (1/1) ... [2022-11-23 14:23:14,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e2221f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:14, skipping insertion in model container [2022-11-23 14:23:14,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:14" (1/1) ... [2022-11-23 14:23:14,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:23:14,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:23:16,013 WARN L237 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_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-11-23 14:23:16,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:16,103 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:23:16,461 WARN L237 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_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2022-11-23 14:23:16,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:16,709 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:23:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16 WrapperNode [2022-11-23 14:23:16,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:16,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:16,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:23:16,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:23:16,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:16,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:16,945 INFO L138 Inliner]: procedures = 200, calls = 1513, calls flagged for inlining = 98, calls inlined = 84, statements flattened = 3353 [2022-11-23 14:23:16,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:16,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:23:16,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:23:16,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:23:16,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:16,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:16,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:16,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:23:17,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:23:17,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:23:17,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:23:17,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (1/1) ... [2022-11-23 14:23:17,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:17,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:23:17,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:23:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:23:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:23:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 14:23:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 14:23:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 14:23:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 14:23:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 14:23:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 14:23:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:23:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:23:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 14:23:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 14:23:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 14:23:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 14:23:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 14:23:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 14:23:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 14:23:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 14:23:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 14:23:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 14:23:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-23 14:23:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-23 14:23:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:23:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:23:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 14:23:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 14:23:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:23:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:23:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:23:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:23:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-23 14:23:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-23 14:23:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-23 14:23:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-23 14:23:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:23:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:23:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-23 14:23:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-23 14:23:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:23:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 14:23:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 14:23:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:23:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:23:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:23:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:23:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:23:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 14:23:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 14:23:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 14:23:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 14:23:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2022-11-23 14:23:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2022-11-23 14:23:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:23:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:23:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-23 14:23:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-23 14:23:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2022-11-23 14:23:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2022-11-23 14:23:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:23:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:23:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:23:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 14:23:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 14:23:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:23:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:23:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:23:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:23:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:23:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:23:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-23 14:23:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-23 14:23:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:23:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:23:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2022-11-23 14:23:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2022-11-23 14:23:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:23:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:23:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:23:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 14:23:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 14:23:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:23:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:23:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2022-11-23 14:23:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2022-11-23 14:23:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:23:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2022-11-23 14:23:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2022-11-23 14:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-23 14:23:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-23 14:23:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2022-11-23 14:23:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2022-11-23 14:23:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2022-11-23 14:23:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2022-11-23 14:23:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:23:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:23:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 14:23:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 14:23:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-23 14:23:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-23 14:23:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-23 14:23:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-23 14:23:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-23 14:23:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-23 14:23:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 14:23:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 14:23:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 14:23:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 14:23:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-23 14:23:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-23 14:23:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2022-11-23 14:23:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2022-11-23 14:23:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:23:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-23 14:23:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-23 14:23:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-23 14:23:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-23 14:23:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-23 14:23:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-23 14:23:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-23 14:23:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-23 14:23:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:23:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:23:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:23:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:23:17,913 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:23:17,916 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:23:18,692 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,700 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,710 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,711 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,713 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,714 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:18,724 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:23:20,729 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##415: assume !false; [2022-11-23 14:23:20,729 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##414: assume false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##271: assume !false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##270: assume false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##276: assume false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##277: assume !false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##225: assume false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##226: assume !false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume false; [2022-11-23 14:23:20,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##240: assume !false; [2022-11-23 14:23:20,731 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-11-23 14:23:20,731 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-11-23 14:23:20,731 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##104: 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; [2022-11-23 14:23:20,731 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume false; [2022-11-23 14:23:20,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:23:21,688 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:23:21,688 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:23:21,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:21 BoogieIcfgContainer [2022-11-23 14:23:21,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:23:21,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:23:21,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:23:21,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:23:21,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:14" (1/3) ... [2022-11-23 14:23:21,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e61480d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:21, skipping insertion in model container [2022-11-23 14:23:21,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:16" (2/3) ... [2022-11-23 14:23:21,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e61480d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:23:21, skipping insertion in model container [2022-11-23 14:23:21,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:23:21" (3/3) ... [2022-11-23 14:23:21,701 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2022-11-23 14:23:21,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:23:21,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:23:21,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:23:21,798 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31859d5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:23:21,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:23:21,806 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) [2022-11-23 14:23:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:23:21,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:21,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:21,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash 279927461, now seen corresponding path program 1 times [2022-11-23 14:23:21,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:21,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555876502] [2022-11-23 14:23:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:22,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:22,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555876502] [2022-11-23 14:23:22,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555876502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:22,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:22,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:23:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089269172] [2022-11-23 14:23:22,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:22,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:23:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:23:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:23:22,484 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) [2022-11-23 14:23:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:23,812 INFO L93 Difference]: Finished difference Result 1640 states and 2353 transitions. [2022-11-23 14:23:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:23,816 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 [2022-11-23 14:23:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:23,832 INFO L225 Difference]: With dead ends: 1640 [2022-11-23 14:23:23,832 INFO L226 Difference]: Without dead ends: 819 [2022-11-23 14:23:23,840 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:23:23,843 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 0 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:23,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2073 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:23:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-23 14:23:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-23 14:23:23,969 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) [2022-11-23 14:23:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1172 transitions. [2022-11-23 14:23:23,979 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1172 transitions. Word has length 15 [2022-11-23 14:23:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:23,980 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1172 transitions. [2022-11-23 14:23:23,980 INFO L496 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) [2022-11-23 14:23:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1172 transitions. [2022-11-23 14:23:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:23:23,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:23,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:23,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:23:23,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 122933480, now seen corresponding path program 1 times [2022-11-23 14:23:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130295974] [2022-11-23 14:23:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:24,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130295974] [2022-11-23 14:23:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130295974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:23:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055089835] [2022-11-23 14:23:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:24,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:24,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:24,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:23:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:23:24,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:23:24,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:23:24,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055089835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:24,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:23:24,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-23 14:23:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118569703] [2022-11-23 14:23:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:23:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:23:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:23:24,986 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) [2022-11-23 14:23:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:26,256 INFO L93 Difference]: Finished difference Result 2373 states and 3389 transitions. [2022-11-23 14:23:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:23:26,257 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 [2022-11-23 14:23:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:26,270 INFO L225 Difference]: With dead ends: 2373 [2022-11-23 14:23:26,270 INFO L226 Difference]: Without dead ends: 1559 [2022-11-23 14:23:26,273 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:23:26,275 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1051 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:26,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 2397 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:23:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2022-11-23 14:23:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1555. [2022-11-23 14:23:26,371 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) [2022-11-23 14:23:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2217 transitions. [2022-11-23 14:23:26,382 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2217 transitions. Word has length 16 [2022-11-23 14:23:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:26,383 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2217 transitions. [2022-11-23 14:23:26,387 INFO L496 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) [2022-11-23 14:23:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2217 transitions. [2022-11-23 14:23:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 14:23:26,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:26,389 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:23:26,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:26,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 14:23:26,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2067942414, now seen corresponding path program 1 times [2022-11-23 14:23:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:26,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220245683] [2022-11-23 14:23:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:26,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:26,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220245683] [2022-11-23 14:23:26,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220245683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:23:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225918040] [2022-11-23 14:23:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:26,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:26,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:26,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:23:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:27,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:23:27,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:27,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:23:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225918040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:27,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [28034577] [2022-11-23 14:23:27,539 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 14:23:27,539 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:23:27,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:23:27,548 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:23:27,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:23:29,275 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:32,298 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:23:32,300 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:32,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:23:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:33,146 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:33,586 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:35,205 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:35,502 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:35,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:35,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 749 [2022-11-23 14:23:36,206 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:45,767 INFO L350 Elim1Store]: Elim1 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 6844 treesize of output 6507 [2022-11-23 14:23:46,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:46,674 INFO L217 Elim1Store]: Index analysis took 109 ms [2022-11-23 14:23:46,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6849 treesize of output 6487 [2022-11-23 14:23:48,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:48,088 INFO L350 Elim1Store]: Elim1 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 6840 treesize of output 6503 [2022-11-23 14:23:56,471 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:58,297 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:58,311 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:58,331 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:58,657 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:00,241 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-23 14:24:00,279 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:24:00,289 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 133 for LOIs [2022-11-23 14:24:00,398 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:24:00,411 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:24:12,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [28034577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:12,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:24:12,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2022-11-23 14:24:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730559612] [2022-11-23 14:24:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 14:24:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 14:24:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:24:12,717 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) [2022-11-23 14:24:39,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:24:41,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:24:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:50,374 INFO L93 Difference]: Finished difference Result 3366 states and 4774 transitions. [2022-11-23 14:24:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 14:24:50,375 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 [2022-11-23 14:24:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:50,384 INFO L225 Difference]: With dead ends: 3366 [2022-11-23 14:24:50,384 INFO L226 Difference]: Without dead ends: 1808 [2022-11-23 14:24:50,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:24:50,390 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 295 mSDsluCounter, 13634 mSDsCounter, 0 mSdLazyCounter, 6448 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 14747 SdHoareTripleChecker+Invalid, 6496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 6448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 14747 Invalid, 6496 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 6448 Invalid, 0 Unknown, 0 Unchecked, 34.7s Time] [2022-11-23 14:24:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-23 14:24:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1739. [2022-11-23 14:24:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1068 states have (on average 1.294007490636704) internal successors, (1382), 1082 states have internal predecessors, (1382), 533 states have call successors, (533), 139 states have call predecessors, (533), 137 states have return successors, (531), 529 states have call predecessors, (531), 531 states have call successors, (531) [2022-11-23 14:24:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2446 transitions. [2022-11-23 14:24:50,555 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2446 transitions. Word has length 30 [2022-11-23 14:24:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:50,555 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2446 transitions. [2022-11-23 14:24:50,555 INFO L496 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) [2022-11-23 14:24:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2446 transitions. [2022-11-23 14:24:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:24:50,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:50,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:24:50,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 14:24:50,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1329279176, now seen corresponding path program 1 times [2022-11-23 14:24:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:50,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265217937] [2022-11-23 14:24:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:24:51,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265217937] [2022-11-23 14:24:51,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265217937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:24:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794789693] [2022-11-23 14:24:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:51,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:51,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:51,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:51,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:24:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:51,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:24:51,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:24:51,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:24:51,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794789693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873125519] [2022-11-23 14:24:51,679 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-23 14:24:51,680 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:24:51,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:24:51,680 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:24:51,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:24:52,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:24:52,699 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:54,670 INFO L321 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-23 14:24:54,671 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:55,218 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:58,330 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:24:58,331 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:00,326 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:00,615 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:01,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:01,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 749 [2022-11-23 14:25:01,395 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:08,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:08,977 INFO L350 Elim1Store]: Elim1 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 6844 treesize of output 6507 [2022-11-23 14:25:09,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:09,899 INFO L217 Elim1Store]: Index analysis took 101 ms [2022-11-23 14:25:09,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6849 treesize of output 6487 [2022-11-23 14:25:10,261 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:11,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:25:11,043 INFO L350 Elim1Store]: Elim1 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 6840 treesize of output 6503 [2022-11-23 14:25:19,550 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:19,563 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:19,578 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:19,827 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:20,199 INFO L321 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2022-11-23 14:25:20,199 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:20,252 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:20,903 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:25:20,903 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:25:22,129 INFO L321 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-23 14:25:22,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 411 treesize of output 486 [2022-11-23 14:25:24,298 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:41,442 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:25:41,442 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:25:42,402 INFO L321 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-23 14:25:42,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 411 treesize of output 486 [2022-11-23 14:25:47,015 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:25:48,365 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:25:48,366 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:25:51,025 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 130 for LOIs [2022-11-23 14:25:51,042 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:25:51,047 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 163 for LOIs [2022-11-23 14:25:51,218 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:25:51,228 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:26:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [873125519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:31,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:26:31,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 3, 4] total 36 [2022-11-23 14:26:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123668111] [2022-11-23 14:26:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:31,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 14:26:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 14:26:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 14:26:31,101 INFO L87 Difference]: Start difference. First operand 1739 states and 2446 transitions. Second operand has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:28:02,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:03,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:08,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:10,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:28:12,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:28:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:33,138 INFO L93 Difference]: Finished difference Result 4862 states and 6950 transitions. [2022-11-23 14:28:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 14:28:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2022-11-23 14:28:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:33,155 INFO L225 Difference]: With dead ends: 4862 [2022-11-23 14:28:33,155 INFO L226 Difference]: Without dead ends: 3304 [2022-11-23 14:28:33,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 68.7s TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 14:28:33,162 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 1592 mSDsluCounter, 9419 mSDsCounter, 0 mSdLazyCounter, 15870 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 10670 SdHoareTripleChecker+Invalid, 16017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 15870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:33,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 10670 Invalid, 16017 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [147 Valid, 15870 Invalid, 0 Unknown, 0 Unchecked, 91.6s Time] [2022-11-23 14:28:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2022-11-23 14:28:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2929. [2022-11-23 14:28:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 1796 states have (on average 1.292316258351893) internal successors, (2321), 1819 states have internal predecessors, (2321), 911 states have call successors, (911), 224 states have call predecessors, (911), 221 states have return successors, (909), 905 states have call predecessors, (909), 909 states have call successors, (909) [2022-11-23 14:28:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 4141 transitions. [2022-11-23 14:28:33,885 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 4141 transitions. Word has length 42 [2022-11-23 14:28:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:33,886 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 4141 transitions. [2022-11-23 14:28:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.12) internal successors, (28), 23 states have internal predecessors, (28), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:28:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 4141 transitions. [2022-11-23 14:28:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 14:28:33,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:33,894 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-23 14:28:33,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 14:28:34,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:34,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:34,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash 798506643, now seen corresponding path program 1 times [2022-11-23 14:28:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:34,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958509430] [2022-11-23 14:28:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:34,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:34,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:34,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958509430] [2022-11-23 14:28:34,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958509430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:28:34,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968668933] [2022-11-23 14:28:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:34,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:34,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:34,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:28:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:34,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:28:34,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:34,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:28:34,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968668933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:34,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1676323809] [2022-11-23 14:28:34,945 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-23 14:28:34,945 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:28:34,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:28:34,946 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:28:34,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:28:35,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:37,517 INFO L321 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-23 14:28:37,518 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:37,947 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:38,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:38,311 INFO L217 Elim1Store]: Index analysis took 110 ms [2022-11-23 14:28:41,009 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:28:41,010 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:41,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:28:41,724 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:43,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 749 [2022-11-23 14:28:43,164 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:43,420 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:43,862 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:28:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:51,290 INFO L350 Elim1Store]: Elim1 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 6844 treesize of output 6507 [2022-11-23 14:28:52,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:52,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6849 treesize of output 6487 [2022-11-23 14:28:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:28:53,523 INFO L350 Elim1Store]: Elim1 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 6840 treesize of output 6503 [2022-11-23 14:29:00,420 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:29:02,072 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:29:02,083 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:29:02,099 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:29:02,304 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:29:04,573 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-23 14:29:04,604 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 97 for LOIs [2022-11-23 14:29:04,611 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:29:04,620 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 138 for LOIs [2022-11-23 14:29:04,920 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:29:04,931 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 140 for LOIs [2022-11-23 14:29:04,959 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:29:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1676323809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:22,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:29:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [4, 3, 4] total 40 [2022-11-23 14:29:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007184709] [2022-11-23 14:29:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:29:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:29:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 14:29:22,514 INFO L87 Difference]: Start difference. First operand 2929 states and 4141 transitions. Second operand has 35 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 24 states have internal predecessors, (31), 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) [2022-11-23 14:29:59,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:30:02,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:30:07,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 14:30:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:11,538 INFO L93 Difference]: Finished difference Result 3169 states and 4464 transitions. [2022-11-23 14:30:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 14:30:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 24 states have internal predecessors, (31), 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 44 [2022-11-23 14:30:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:11,555 INFO L225 Difference]: With dead ends: 3169 [2022-11-23 14:30:11,555 INFO L226 Difference]: Without dead ends: 3163 [2022-11-23 14:30:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=241, Invalid=2515, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 14:30:11,558 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 312 mSDsluCounter, 13716 mSDsCounter, 0 mSdLazyCounter, 7768 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 14829 SdHoareTripleChecker+Invalid, 7823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 7768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:11,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 14829 Invalid, 7823 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 7768 Invalid, 0 Unknown, 0 Unchecked, 39.2s Time] [2022-11-23 14:30:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-11-23 14:30:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3112. [2022-11-23 14:30:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 1905 states have (on average 1.288713910761155) internal successors, (2455), 1934 states have internal predecessors, (2455), 966 states have call successors, (966), 243 states have call predecessors, (966), 240 states have return successors, (964), 958 states have call predecessors, (964), 964 states have call successors, (964) [2022-11-23 14:30:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4385 transitions. [2022-11-23 14:30:12,409 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4385 transitions. Word has length 44 [2022-11-23 14:30:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:12,412 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 4385 transitions. [2022-11-23 14:30:12,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 24 states have internal predecessors, (31), 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) [2022-11-23 14:30:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4385 transitions. [2022-11-23 14:30:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:30:12,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:12,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:30:12,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:30:12,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1051514549, now seen corresponding path program 1 times [2022-11-23 14:30:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:30:12,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947285913] [2022-11-23 14:30:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:12,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:30:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:30:12,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:30:12,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947285913] [2022-11-23 14:30:12,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947285913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:30:12,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144161502] [2022-11-23 14:30:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:30:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:30:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:30:12,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:30:12,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:30:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:30:13,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:30:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:30:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:30:13,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:30:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:30:13,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144161502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:30:13,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022270505] [2022-11-23 14:30:13,373 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-23 14:30:13,374 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:30:13,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:30:13,374 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:30:13,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:30:14,188 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:14,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:30:14,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:17,196 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:30:17,197 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:17,646 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:17,972 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:19,101 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:19,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 749 [2022-11-23 14:30:19,596 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:19,768 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:27,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,064 INFO L350 Elim1Store]: Elim1 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 6844 treesize of output 6507 [2022-11-23 14:30:27,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:27,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6849 treesize of output 6487 [2022-11-23 14:30:28,286 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:30:29,032 INFO L350 Elim1Store]: Elim1 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 6840 treesize of output 6503 [2022-11-23 14:30:37,293 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:37,303 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:37,321 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:37,520 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:30:40,449 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-23 14:30:40,479 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 114 for LOIs [2022-11-23 14:30:40,504 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:30:40,511 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 190 for LOIs [2022-11-23 14:30:41,090 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 188 for LOIs [2022-11-23 14:30:41,256 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:30:41,264 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:31:02,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40777#(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) (<= ~ldv_module_refcounter~0 1) (= ~__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|) (= |~#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) (= ~__mod_pci_device_table~0.device 0) (= |~#fst_ops~0.offset| 0) (exists ((|v_ULTIMATE.start_fst_open_~port~4#1.base_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_fst_open_~port~4#1.offset_BEFORE_CALL_8| Int)) (not (= (select (select |#memory_int| |v_ULTIMATE.start_fst_open_~port~4#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_fst_open_~port~4#1.offset_BEFORE_CALL_8| 28)) 4))) (= 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) (not (= (mod (+ |~#__this_module~0.offset| |~#__this_module~0.base|) 18446744073709551616) 0)) (= |~#fst_driver~0.offset| 0) (= |#NULL.offset| 0) (= 7 ~fst_max_reads~0) (<= ~fst_excluded_cards~0 0) (= |~#fst_work_q_lock~0.offset| 0) (<= 0 |#StackHeapBarrier|) (= |~#fst_work_txq~0.offset| 0) (= |#NULL.base| 0) (<= 0 ~fst_excluded_cards~0) (= |~#fst_card_array~0.offset| 0))' at error location [2022-11-23 14:31:02,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:31:02,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:31:02,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-23 14:31:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774489151] [2022-11-23 14:31:02,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:31:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:31:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:31:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:31:02,249 INFO L87 Difference]: Start difference. First operand 3112 states and 4385 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:31:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:04,170 INFO L93 Difference]: Finished difference Result 6224 states and 8772 transitions. [2022-11-23 14:31:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:31:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 45 [2022-11-23 14:31:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:04,185 INFO L225 Difference]: With dead ends: 6224 [2022-11-23 14:31:04,185 INFO L226 Difference]: Without dead ends: 3115 [2022-11-23 14:31:04,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:31:04,194 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 0 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:04,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3103 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:31:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2022-11-23 14:31:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3115. [2022-11-23 14:31:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 1908 states have (on average 1.2882599580712788) internal successors, (2458), 1937 states have internal predecessors, (2458), 966 states have call successors, (966), 243 states have call predecessors, (966), 240 states have return successors, (964), 958 states have call predecessors, (964), 964 states have call successors, (964) [2022-11-23 14:31:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4388 transitions. [2022-11-23 14:31:04,863 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4388 transitions. Word has length 45 [2022-11-23 14:31:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:04,863 INFO L495 AbstractCegarLoop]: Abstraction has 3115 states and 4388 transitions. [2022-11-23 14:31:04,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:31:04,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4388 transitions. [2022-11-23 14:31:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 14:31:04,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:04,867 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:04,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:05,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash 601994222, now seen corresponding path program 2 times [2022-11-23 14:31:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:05,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862466239] [2022-11-23 14:31:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:31:05,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862466239] [2022-11-23 14:31:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862466239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:05,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:05,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:31:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844797663] [2022-11-23 14:31:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:31:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:31:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:31:05,227 INFO L87 Difference]: Start difference. First operand 3115 states and 4388 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 14:31:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:07,172 INFO L93 Difference]: Finished difference Result 4520 states and 6390 transitions. [2022-11-23 14:31:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:31:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-11-23 14:31:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:07,187 INFO L225 Difference]: With dead ends: 4520 [2022-11-23 14:31:07,187 INFO L226 Difference]: Without dead ends: 3012 [2022-11-23 14:31:07,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:31:07,195 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 9 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:07,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3099 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:31:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-11-23 14:31:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 3008. [2022-11-23 14:31:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1844 states have (on average 1.2874186550976139) internal successors, (2374), 1869 states have internal predecessors, (2374), 939 states have call successors, (939), 227 states have call predecessors, (939), 224 states have return successors, (937), 932 states have call predecessors, (937), 937 states have call successors, (937) [2022-11-23 14:31:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4250 transitions. [2022-11-23 14:31:07,979 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4250 transitions. Word has length 48 [2022-11-23 14:31:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:07,979 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4250 transitions. [2022-11-23 14:31:07,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 14:31:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4250 transitions. [2022-11-23 14:31:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 14:31:07,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:07,982 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:31:07,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:31:07,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1116712567, now seen corresponding path program 1 times [2022-11-23 14:31:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:07,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015369417] [2022-11-23 14:31:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:31:08,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015369417] [2022-11-23 14:31:08,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015369417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:31:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835216592] [2022-11-23 14:31:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:08,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:08,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:31:08,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:31:08,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:31:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:31:08,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:31:08,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:31:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:31:08,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835216592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:31:08,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736705153] [2022-11-23 14:31:08,974 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-23 14:31:08,974 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:31:08,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:31:08,975 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:31:08,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:31:09,756 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:12,536 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:31:12,537 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:12,921 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:13,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:13,163 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:13,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:31:14,738 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:14,963 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:15,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:15,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 749 [2022-11-23 14:31:15,504 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:23,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:23,548 INFO L350 Elim1Store]: Elim1 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 6844 treesize of output 6507 [2022-11-23 14:31:24,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:24,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6849 treesize of output 6487 [2022-11-23 14:31:25,045 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:31:25,996 INFO L350 Elim1Store]: Elim1 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 6840 treesize of output 6503 [2022-11-23 14:31:35,431 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:35,443 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:35,454 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:35,668 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:36,040 INFO L321 Elim1Store]: treesize reduction 61, result has 22.8 percent of original size [2022-11-23 14:31:36,040 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:36,079 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:36,552 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:31:36,552 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:31:37,378 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:31:37,379 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:31:37,668 INFO L321 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-23 14:31:37,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 434 treesize of output 509 [2022-11-23 14:31:47,692 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:31:47,692 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:31:49,097 INFO L321 Elim1Store]: treesize reduction 115, result has 43.9 percent of original size [2022-11-23 14:31:49,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 434 treesize of output 509 [2022-11-23 14:31:50,709 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:32:08,291 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:32:08,292 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 14:32:17,383 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 93 for LOIs [2022-11-23 14:32:17,394 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:32:17,401 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 126 for LOIs [2022-11-23 14:32:17,464 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:32:17,472 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:32:50,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1736705153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:50,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:32:50,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [7, 6, 7] total 46 [2022-11-23 14:32:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585942240] [2022-11-23 14:32:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:32:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:32:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 14:32:50,043 INFO L87 Difference]: Start difference. First operand 3008 states and 4250 transitions. Second operand has 35 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:34:15,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:18,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:42,535 INFO L93 Difference]: Finished difference Result 6760 states and 9650 transitions. [2022-11-23 14:34:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 14:34:42,536 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2022-11-23 14:34:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:42,554 INFO L225 Difference]: With dead ends: 6760 [2022-11-23 14:34:42,555 INFO L226 Difference]: Without dead ends: 4615 [2022-11-23 14:34:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 14:34:42,563 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1662 mSDsluCounter, 11440 mSDsCounter, 0 mSdLazyCounter, 19028 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 12696 SdHoareTripleChecker+Invalid, 19196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 19028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 12696 Invalid, 19196 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [168 Valid, 19028 Invalid, 0 Unknown, 0 Unchecked, 89.5s Time] [2022-11-23 14:34:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2022-11-23 14:34:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3606. [2022-11-23 14:34:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2211 states have (on average 1.2894617819990954) internal successors, (2851), 2241 states have internal predecessors, (2851), 1128 states have call successors, (1128), 269 states have call predecessors, (1128), 266 states have return successors, (1126), 1120 states have call predecessors, (1126), 1126 states have call successors, (1126) [2022-11-23 14:34:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5105 transitions. [2022-11-23 14:34:43,675 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5105 transitions. Word has length 49 [2022-11-23 14:34:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:34:43,676 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 5105 transitions. [2022-11-23 14:34:43,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:34:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5105 transitions. [2022-11-23 14:34:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-23 14:34:43,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:34:43,679 INFO L195 NwaCegarLoop]: 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] [2022-11-23 14:34:43,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:34:43,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:34:43,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:34:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:34:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 567209476, now seen corresponding path program 1 times [2022-11-23 14:34:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:34:43,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903723563] [2022-11-23 14:34:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:43,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:34:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:34:44,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:34:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903723563] [2022-11-23 14:34:44,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903723563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:34:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923612521] [2022-11-23 14:34:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:44,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:34:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:34:44,070 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:34:44,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038f06cf-cb3f-491b-bb48-bd7dad6e69bd/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:34:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:44,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:34:44,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:34:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:34:44,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:34:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:34:44,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923612521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:34:44,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35445841] [2022-11-23 14:34:44,800 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-23 14:34:44,800 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:34:44,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:34:44,800 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:34:44,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:34:45,497 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:45,644 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:45,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:34:47,533 INFO L321 Elim1Store]: treesize reduction 560, result has 45.5 percent of original size [2022-11-23 14:34:47,534 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:48,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:34:50,633 INFO L321 Elim1Store]: treesize reduction 972, result has 33.4 percent of original size [2022-11-23 14:34:50,634 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:51,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 182 [2022-11-23 14:34:52,465 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:52,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 909 treesize of output 759 [2022-11-23 14:34:52,932 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:34:53,128 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:00,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:00,346 INFO L350 Elim1Store]: Elim1 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 6854 treesize of output 6517 [2022-11-23 14:35:01,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,067 INFO L350 Elim1Store]: Elim1 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 6850 treesize of output 6513 [2022-11-23 14:35:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:35:01,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 6855 treesize of output 6493 [2022-11-23 14:35:02,228 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:10,259 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:10,281 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:10,302 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:10,573 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:35:16,587 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 100 for LOIs [2022-11-23 14:35:16,615 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 97 for LOIs [2022-11-23 14:35:16,623 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 97 for LOIs [2022-11-23 14:35:16,629 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 95 for LOIs [2022-11-23 14:35:16,731 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 106 for LOIs [2022-11-23 14:35:16,738 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 97 for LOIs [2022-11-23 14:35:16,747 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:35:49,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [35445841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:35:49,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:35:49,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [4, 6, 7] total 48 [2022-11-23 14:35:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780808565] [2022-11-23 14:35:49,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:35:49,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 14:35:49,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:35:49,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 14:35:49,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:35:49,401 INFO L87 Difference]: Start difference. First operand 3606 states and 5105 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) [2022-11-23 14:37:04,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []