./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:01:33,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:01:33,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:01:33,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:01:33,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:01:33,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:01:33,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:01:33,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:01:33,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:01:33,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:01:33,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:01:33,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:01:33,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:01:33,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:01:33,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:01:33,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:01:33,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:01:33,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:01:33,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:01:33,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:01:33,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:01:33,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:01:33,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:01:33,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:01:33,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:01:33,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:01:33,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:01:33,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:01:33,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:01:33,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:01:33,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:01:33,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:01:33,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:01:33,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:01:33,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:01:33,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:01:33,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:01:33,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:01:33,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:01:33,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:01:33,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:01:33,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:01:33,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:01:33,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:01:33,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:01:33,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:01:33,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:01:33,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:01:33,467 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:01:33,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:01:33,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:01:33,468 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:01:33,469 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:01:33,469 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:01:33,469 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:01:33,470 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:01:33,470 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:01:33,470 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:01:33,470 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:01:33,471 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:01:33,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:01:33,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:01:33,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:01:33,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:01:33,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:01:33,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:01:33,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:01:33,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:01:33,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:01:33,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:01:33,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:01:33,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:01:33,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:01:33,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:01:33,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:01:33,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:01:33,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:01:33,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:01:33,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:01:33,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:01:33,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81d3a41c14974620b49988c1780c7d5a75f04674e564d23c865943e8c9fe2089 [2021-11-25 18:01:33,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:01:33,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:01:33,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:01:33,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:01:33,815 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:01:33,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-25 18:01:33,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/data/a64e44912/5cada19a29ed4cdf9b5ba5b1ff5c035d/FLAG90345641b [2021-11-25 18:01:34,979 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:01:34,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-25 18:01:35,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/data/a64e44912/5cada19a29ed4cdf9b5ba5b1ff5c035d/FLAG90345641b [2021-11-25 18:01:35,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/data/a64e44912/5cada19a29ed4cdf9b5ba5b1ff5c035d [2021-11-25 18:01:35,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:01:35,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:01:35,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:01:35,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:01:35,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:01:35,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:35" (1/1) ... [2021-11-25 18:01:35,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad91382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:35, skipping insertion in model container [2021-11-25 18:01:35,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:35" (1/1) ... [2021-11-25 18:01:35,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:01:35,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:01:40,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519506,519519] [2021-11-25 18:01:40,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519651,519664] [2021-11-25 18:01:40,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:01:40,414 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:01:40,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519506,519519] [2021-11-25 18:01:40,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[519651,519664] [2021-11-25 18:01:40,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:01:41,396 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:01:41,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41 WrapperNode [2021-11-25 18:01:41,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:01:41,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:01:41,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:01:41,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:01:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:41,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,036 INFO L137 Inliner]: procedures = 574, calls = 6348, calls flagged for inlining = 279, calls inlined = 246, statements flattened = 12134 [2021-11-25 18:01:42,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:01:42,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:01:42,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:01:42,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:01:42,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:01:42,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:01:42,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:01:42,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:01:42,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (1/1) ... [2021-11-25 18:01:42,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:01:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:01:42,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:01:42,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:01:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:01:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:01:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:01:42,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:01:42,707 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:01:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:01:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2021-11-25 18:01:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2021-11-25 18:01:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:01:42,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:01:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2021-11-25 18:01:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2021-11-25 18:01:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 18:01:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 18:01:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:01:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:01:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:01:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:01:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:01:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:01:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2021-11-25 18:01:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2021-11-25 18:01:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2021-11-25 18:01:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2021-11-25 18:01:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2021-11-25 18:01:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2021-11-25 18:01:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2021-11-25 18:01:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2021-11-25 18:01:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:01:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:01:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2021-11-25 18:01:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2021-11-25 18:01:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2021-11-25 18:01:42,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2021-11-25 18:01:42,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:01:42,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:01:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:01:42,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:01:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:01:42,713 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:01:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:01:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:01:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_resume [2021-11-25 18:01:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_resume [2021-11-25 18:01:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:01:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:01:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:01:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:01:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:01:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 18:01:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 18:01:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2021-11-25 18:01:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2021-11-25 18:01:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:01:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:01:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2021-11-25 18:01:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2021-11-25 18:01:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:01:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:01:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:01:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2021-11-25 18:01:42,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2021-11-25 18:01:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2021-11-25 18:01:42,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2021-11-25 18:01:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:01:42,717 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:01:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2021-11-25 18:01:42,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2021-11-25 18:01:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:01:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:01:42,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:01:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2021-11-25 18:01:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2021-11-25 18:01:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2021-11-25 18:01:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2021-11-25 18:01:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:01:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2021-11-25 18:01:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2021-11-25 18:01:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:01:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:01:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 18:01:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 18:01:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:01:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:01:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:01:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:01:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 18:01:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 18:01:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:01:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:01:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:01:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:01:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 18:01:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 18:01:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2021-11-25 18:01:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2021-11-25 18:01:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 18:01:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 18:01:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:01:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:01:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2021-11-25 18:01:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2021-11-25 18:01:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2021-11-25 18:01:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2021-11-25 18:01:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2021-11-25 18:01:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2021-11-25 18:01:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:01:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:01:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:01:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 18:01:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 18:01:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:01:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 18:01:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 18:01:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:01:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:01:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:01:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:01:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:01:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:01:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:01:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2021-11-25 18:01:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2021-11-25 18:01:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2021-11-25 18:01:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2021-11-25 18:01:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:01:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:01:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:01:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:01:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 18:01:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 18:01:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_remove [2021-11-25 18:01:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_remove [2021-11-25 18:01:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:01:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:01:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2021-11-25 18:01:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2021-11-25 18:01:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2021-11-25 18:01:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2021-11-25 18:01:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2021-11-25 18:01:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2021-11-25 18:01:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 18:01:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 18:01:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:01:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:01:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:01:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:01:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2021-11-25 18:01:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2021-11-25 18:01:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2021-11-25 18:01:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2021-11-25 18:01:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2021-11-25 18:01:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2021-11-25 18:01:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:01:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:01:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:01:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:01:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_open [2021-11-25 18:01:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_open [2021-11-25 18:01:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:01:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:01:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 18:01:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 18:01:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 18:01:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 18:01:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:01:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:01:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:01:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:01:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:01:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 18:01:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:01:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:01:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 18:01:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 18:01:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2021-11-25 18:01:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2021-11-25 18:01:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:01:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:01:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2021-11-25 18:01:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2021-11-25 18:01:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 18:01:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 18:01:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:01:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:01:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:01:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:01:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-25 18:01:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-25 18:01:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_close [2021-11-25 18:01:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_close [2021-11-25 18:01:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 18:01:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 18:01:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 18:01:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 18:01:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:01:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:01:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 18:01:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 18:01:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:01:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 18:01:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 18:01:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:01:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:01:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:01:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 18:01:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 18:01:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:01:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 18:01:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 18:01:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 18:01:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 18:01:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:01:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:01:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:01:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:01:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:01:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:01:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2021-11-25 18:01:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2021-11-25 18:01:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2021-11-25 18:01:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2021-11-25 18:01:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 18:01:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 18:01:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-25 18:01:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-25 18:01:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:01:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:01:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:01:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:01:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 18:01:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 18:01:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:01:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:01:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2021-11-25 18:01:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2021-11-25 18:01:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 18:01:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 18:01:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:01:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:01:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:01:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2021-11-25 18:01:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2021-11-25 18:01:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:01:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:01:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2021-11-25 18:01:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2021-11-25 18:01:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:01:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:01:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2021-11-25 18:01:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2021-11-25 18:01:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 18:01:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 18:01:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-25 18:01:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-25 18:01:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2021-11-25 18:01:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2021-11-25 18:01:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-25 18:01:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-25 18:01:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:01:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:01:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2021-11-25 18:01:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2021-11-25 18:01:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2021-11-25 18:01:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2021-11-25 18:01:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2021-11-25 18:01:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2021-11-25 18:01:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2021-11-25 18:01:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2021-11-25 18:01:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2021-11-25 18:01:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2021-11-25 18:01:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:01:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:01:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:01:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:01:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:01:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 18:01:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-25 18:01:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-25 18:01:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:01:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:01:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:01:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:01:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:01:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 18:01:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2021-11-25 18:01:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2021-11-25 18:01:44,011 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:01:44,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:01:44,297 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:02:10,682 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:02:13,020 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:02:13,020 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:02:13,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:13 BoogieIcfgContainer [2021-11-25 18:02:13,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:02:13,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:02:13,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:02:13,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:02:13,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:01:35" (1/3) ... [2021-11-25 18:02:13,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aaee32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:13, skipping insertion in model container [2021-11-25 18:02:13,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:41" (2/3) ... [2021-11-25 18:02:13,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aaee32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:13, skipping insertion in model container [2021-11-25 18:02:13,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:13" (3/3) ... [2021-11-25 18:02:13,034 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-25 18:02:13,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:02:13,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:02:13,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:02:13,101 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:02:13,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:02:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 2367 states, 1339 states have (on average 1.2195668409260643) internal successors, (1633), 1383 states have internal predecessors, (1633), 891 states have call successors, (891), 135 states have call predecessors, (891), 134 states have return successors, (887), 874 states have call predecessors, (887), 887 states have call successors, (887) [2021-11-25 18:02:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:02:13,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:13,185 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:13,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:02:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2126055841, now seen corresponding path program 1 times [2021-11-25 18:02:13,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:13,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767503147] [2021-11-25 18:02:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:13,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 18:02:14,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:14,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767503147] [2021-11-25 18:02:14,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767503147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:14,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:14,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:02:14,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046821256] [2021-11-25 18:02:14,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:14,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:02:14,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:02:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:02:14,998 INFO L87 Difference]: Start difference. First operand has 2367 states, 1339 states have (on average 1.2195668409260643) internal successors, (1633), 1383 states have internal predecessors, (1633), 891 states have call successors, (891), 135 states have call predecessors, (891), 134 states have return successors, (887), 874 states have call predecessors, (887), 887 states have call successors, (887) Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:02:19,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:30,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:45,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:47,728 INFO L93 Difference]: Finished difference Result 7034 states and 10267 transitions. [2021-11-25 18:02:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:02:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-11-25 18:02:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:47,807 INFO L225 Difference]: With dead ends: 7034 [2021-11-25 18:02:47,807 INFO L226 Difference]: Without dead ends: 4596 [2021-11-25 18:02:47,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:02:47,846 INFO L933 BasicCegarLoop]: 3988 mSDtfsCounter, 3303 mSDsluCounter, 14857 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 17152 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:47,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3305 Valid, 17152 Invalid, 3903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3899 Invalid, 2 Unknown, 0 Unchecked, 31.5s Time] [2021-11-25 18:02:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2021-11-25 18:02:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 4588. [2021-11-25 18:02:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 2617 states have (on average 1.211692777990065) internal successors, (3171), 2696 states have internal predecessors, (3171), 1705 states have call successors, (1705), 264 states have call predecessors, (1705), 264 states have return successors, (1705), 1677 states have call predecessors, (1705), 1705 states have call successors, (1705) [2021-11-25 18:02:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 6581 transitions. [2021-11-25 18:02:48,739 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 6581 transitions. Word has length 130 [2021-11-25 18:02:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:48,744 INFO L470 AbstractCegarLoop]: Abstraction has 4588 states and 6581 transitions. [2021-11-25 18:02:48,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 18:02:48,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 6581 transitions. [2021-11-25 18:02:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 18:02:48,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:48,762 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:48,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:02:48,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:02:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1461016049, now seen corresponding path program 1 times [2021-11-25 18:02:48,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983373945] [2021-11-25 18:02:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:48,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-25 18:02:49,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:49,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983373945] [2021-11-25 18:02:49,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983373945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:49,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:49,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:02:49,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733768541] [2021-11-25 18:02:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:49,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:02:49,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:02:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:02:49,940 INFO L87 Difference]: Start difference. First operand 4588 states and 6581 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:03:04,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:06,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:08,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:18,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:21,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:23,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:27,768 INFO L93 Difference]: Finished difference Result 6892 states and 9886 transitions. [2021-11-25 18:03:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:03:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2021-11-25 18:03:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:27,829 INFO L225 Difference]: With dead ends: 6892 [2021-11-25 18:03:27,829 INFO L226 Difference]: Without dead ends: 6890 [2021-11-25 18:03:27,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:03:27,837 INFO L933 BasicCegarLoop]: 3772 mSDtfsCounter, 3268 mSDsluCounter, 14105 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 16258 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:27,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3272 Valid, 16258 Invalid, 3767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3760 Invalid, 5 Unknown, 0 Unchecked, 36.6s Time] [2021-11-25 18:03:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2021-11-25 18:03:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 6887. [2021-11-25 18:03:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 3929 states have (on average 1.2117587172308475) internal successors, (4761), 4048 states have internal predecessors, (4761), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 396 states have return successors, (2560), 2518 states have call predecessors, (2560), 2560 states have call successors, (2560) [2021-11-25 18:03:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9881 transitions. [2021-11-25 18:03:28,712 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9881 transitions. Word has length 151 [2021-11-25 18:03:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:28,714 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 9881 transitions. [2021-11-25 18:03:28,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:03:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9881 transitions. [2021-11-25 18:03:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-25 18:03:28,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:28,736 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 10, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:28,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:03:28,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:03:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1085038336, now seen corresponding path program 1 times [2021-11-25 18:03:28,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:28,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172794341] [2021-11-25 18:03:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:28,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-11-25 18:03:29,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172794341] [2021-11-25 18:03:29,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172794341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:29,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:29,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:03:29,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507942936] [2021-11-25 18:03:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:29,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:29,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:29,934 INFO L87 Difference]: Start difference. First operand 6887 states and 9881 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 18:03:32,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:38,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:43,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:43,701 INFO L93 Difference]: Finished difference Result 15769 states and 22912 transitions. [2021-11-25 18:03:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:43,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 390 [2021-11-25 18:03:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:43,785 INFO L225 Difference]: With dead ends: 15769 [2021-11-25 18:03:43,785 INFO L226 Difference]: Without dead ends: 8896 [2021-11-25 18:03:43,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:43,832 INFO L933 BasicCegarLoop]: 3258 mSDtfsCounter, 547 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 6208 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:43,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 6208 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 838 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-11-25 18:03:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-11-25 18:03:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 6890. [2021-11-25 18:03:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6890 states, 3932 states have (on average 1.2115971515768056) internal successors, (4764), 4051 states have internal predecessors, (4764), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 396 states have return successors, (2560), 2518 states have call predecessors, (2560), 2560 states have call successors, (2560) [2021-11-25 18:03:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 9884 transitions. [2021-11-25 18:03:44,931 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 9884 transitions. Word has length 390 [2021-11-25 18:03:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:44,932 INFO L470 AbstractCegarLoop]: Abstraction has 6890 states and 9884 transitions. [2021-11-25 18:03:44,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 18:03:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 9884 transitions. [2021-11-25 18:03:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-25 18:03:44,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:44,951 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 10, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:03:44,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:03:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1244659998, now seen corresponding path program 1 times [2021-11-25 18:03:44,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:44,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484264211] [2021-11-25 18:03:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:44,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2021-11-25 18:03:48,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484264211] [2021-11-25 18:03:48,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484264211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37919908] [2021-11-25 18:03:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:48,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:48,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:48,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:48,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:03:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:51,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 13224 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 18:03:51,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-11-25 18:03:53,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:03:53,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37919908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:53,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:03:53,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-25 18:03:53,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387336063] [2021-11-25 18:03:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:53,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:03:53,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:03:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:03:53,195 INFO L87 Difference]: Start difference. First operand 6890 states and 9884 transitions. Second operand has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-25 18:04:08,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:14,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:14,628 INFO L93 Difference]: Finished difference Result 14045 states and 20194 transitions. [2021-11-25 18:04:14,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:04:14,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) Word has length 392 [2021-11-25 18:04:14,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:14,687 INFO L225 Difference]: With dead ends: 14045 [2021-11-25 18:04:14,687 INFO L226 Difference]: Without dead ends: 7169 [2021-11-25 18:04:14,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:04:14,733 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 68 mSDsluCounter, 13728 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 15104 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:14,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 15104 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2108 Invalid, 2 Unknown, 0 Unchecked, 20.9s Time] [2021-11-25 18:04:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2021-11-25 18:04:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 6902. [2021-11-25 18:04:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6902 states, 3941 states have (on average 1.2118751585891905) internal successors, (4776), 4060 states have internal predecessors, (4776), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 399 states have return successors, (2566), 2521 states have call predecessors, (2566), 2560 states have call successors, (2566) [2021-11-25 18:04:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 9902 transitions. [2021-11-25 18:04:15,724 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 9902 transitions. Word has length 392 [2021-11-25 18:04:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:15,726 INFO L470 AbstractCegarLoop]: Abstraction has 6902 states and 9902 transitions. [2021-11-25 18:04:15,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-25 18:04:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 9902 transitions. [2021-11-25 18:04:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-11-25 18:04:15,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:15,755 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 10, 10, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:15,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:15,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:15,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1534073517, now seen corresponding path program 1 times [2021-11-25 18:04:15,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:15,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706257619] [2021-11-25 18:04:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:15,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-25 18:04:18,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:18,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706257619] [2021-11-25 18:04:18,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706257619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:18,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515971871] [2021-11-25 18:04:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:18,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:18,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:18,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:04:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:21,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 14307 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:04:21,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 235 proven. 1 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 18:04:23,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2021-11-25 18:04:25,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515971871] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:25,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:04:25,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 11 [2021-11-25 18:04:25,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633711935] [2021-11-25 18:04:25,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:25,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:25,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:04:25,040 INFO L87 Difference]: Start difference. First operand 6902 states and 9902 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2021-11-25 18:04:27,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:29,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:34,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:38,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:38,534 INFO L93 Difference]: Finished difference Result 13814 states and 19923 transitions. [2021-11-25 18:04:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:04:38,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 584 [2021-11-25 18:04:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:38,576 INFO L225 Difference]: With dead ends: 13814 [2021-11-25 18:04:38,577 INFO L226 Difference]: Without dead ends: 6926 [2021-11-25 18:04:38,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:04:38,615 INFO L933 BasicCegarLoop]: 2919 mSDtfsCounter, 4 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:38,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5832 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 815 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-11-25 18:04:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-11-25 18:04:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6908. [2021-11-25 18:04:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6908 states, 3947 states have (on average 1.2123131492272612) internal successors, (4785), 4066 states have internal predecessors, (4785), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 399 states have return successors, (2566), 2521 states have call predecessors, (2566), 2560 states have call successors, (2566) [2021-11-25 18:04:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 9911 transitions. [2021-11-25 18:04:39,691 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 9911 transitions. Word has length 584 [2021-11-25 18:04:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 6908 states and 9911 transitions. [2021-11-25 18:04:39,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2021-11-25 18:04:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 9911 transitions. [2021-11-25 18:04:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2021-11-25 18:04:39,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:39,723 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 10, 10, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:39,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:39,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:39,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2032396293, now seen corresponding path program 1 times [2021-11-25 18:04:39,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:39,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183789078] [2021-11-25 18:04:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:39,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1150 trivial. 0 not checked. [2021-11-25 18:04:42,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183789078] [2021-11-25 18:04:42,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183789078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794313381] [2021-11-25 18:04:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:42,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:42,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:42,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:04:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:46,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 14389 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:04:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-25 18:04:47,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2021-11-25 18:04:49,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794313381] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:49,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:04:49,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 11 [2021-11-25 18:04:49,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262245323] [2021-11-25 18:04:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:49,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:49,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:04:49,060 INFO L87 Difference]: Start difference. First operand 6908 states and 9911 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-11-25 18:04:50,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:58,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:01,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:01,619 INFO L93 Difference]: Finished difference Result 13799 states and 19899 transitions. [2021-11-25 18:05:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:05:01,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 587 [2021-11-25 18:05:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:01,655 INFO L225 Difference]: With dead ends: 13799 [2021-11-25 18:05:01,655 INFO L226 Difference]: Without dead ends: 6905 [2021-11-25 18:05:01,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:05:01,688 INFO L933 BasicCegarLoop]: 2917 mSDtfsCounter, 1 mSDsluCounter, 3319 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5831 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:01,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5831 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 815 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-25 18:05:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2021-11-25 18:05:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 6905. [2021-11-25 18:05:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 3944 states have (on average 1.2117139959432048) internal successors, (4779), 4063 states have internal predecessors, (4779), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 399 states have return successors, (2566), 2521 states have call predecessors, (2566), 2560 states have call successors, (2566) [2021-11-25 18:05:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 9905 transitions. [2021-11-25 18:05:02,429 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 9905 transitions. Word has length 587 [2021-11-25 18:05:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:02,430 INFO L470 AbstractCegarLoop]: Abstraction has 6905 states and 9905 transitions. [2021-11-25 18:05:02,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2021-11-25 18:05:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 9905 transitions. [2021-11-25 18:05:02,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2021-11-25 18:05:02,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:02,451 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 20, 13, 13, 10, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:02,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:05:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 18:05:02,664 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1891934562, now seen corresponding path program 1 times [2021-11-25 18:05:02,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:02,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664918996] [2021-11-25 18:05:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:02,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2021-11-25 18:05:05,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664918996] [2021-11-25 18:05:05,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664918996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953147309] [2021-11-25 18:05:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:05,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:05,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:05,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:05:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 15402 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 18:05:09,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3014 trivial. 0 not checked. [2021-11-25 18:07:04,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:07:04,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953147309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:04,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:07:04,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-11-25 18:07:04,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751438249] [2021-11-25 18:07:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:04,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:07:04,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:07:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:07:04,977 INFO L87 Difference]: Start difference. First operand 6905 states and 9905 transitions. Second operand has 6 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (103), 1 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 1 states have call successors, (100) [2021-11-25 18:07:23,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:31,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:36,390 INFO L93 Difference]: Finished difference Result 6912 states and 9917 transitions. [2021-11-25 18:07:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:07:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (103), 1 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 1 states have call successors, (100) Word has length 776 [2021-11-25 18:07:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:36,427 INFO L225 Difference]: With dead ends: 6912 [2021-11-25 18:07:36,427 INFO L226 Difference]: Without dead ends: 6910 [2021-11-25 18:07:36,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:07:36,432 INFO L933 BasicCegarLoop]: 3777 mSDtfsCounter, 2910 mSDsluCounter, 13256 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 15419 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:36,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 15419 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3758 Invalid, 2 Unknown, 0 Unchecked, 30.5s Time] [2021-11-25 18:07:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6910 states. [2021-11-25 18:07:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6910 to 6905. [2021-11-25 18:07:37,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 3944 states have (on average 1.2114604462474645) internal successors, (4778), 4063 states have internal predecessors, (4778), 2560 states have call successors, (2560), 396 states have call predecessors, (2560), 399 states have return successors, (2566), 2521 states have call predecessors, (2566), 2560 states have call successors, (2566) [2021-11-25 18:07:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 9904 transitions. [2021-11-25 18:07:37,240 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 9904 transitions. Word has length 776 [2021-11-25 18:07:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:37,242 INFO L470 AbstractCegarLoop]: Abstraction has 6905 states and 9904 transitions. [2021-11-25 18:07:37,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (103), 1 states have call predecessors, (103), 2 states have return successors, (100), 2 states have call predecessors, (100), 1 states have call successors, (100) [2021-11-25 18:07:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 9904 transitions. [2021-11-25 18:07:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2021-11-25 18:07:37,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:37,293 INFO L514 BasicCegarLoop]: trace histogram [75, 31, 20, 13, 13, 10, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:37,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:37,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74546e73-79f6-4572-b963-9e1f512ddcce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:37,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:07:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:37,509 INFO L85 PathProgramCache]: Analyzing trace with hash 453172936, now seen corresponding path program 1 times [2021-11-25 18:07:37,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:37,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257782024] [2021-11-25 18:07:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:37,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms