./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba --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 c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:27:03,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:27:03,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:27:03,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:27:03,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:27:03,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:27:03,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:27:03,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:27:03,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:27:03,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:27:03,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:27:03,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:27:03,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:27:03,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:27:03,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:27:03,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:27:03,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:27:03,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:27:03,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:27:03,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:27:03,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:27:03,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:27:03,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:27:03,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:27:03,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:27:03,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:27:03,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:27:03,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:27:03,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:27:03,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:27:03,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:27:03,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:27:03,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:27:03,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:27:03,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:27:03,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:27:03,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:27:03,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:27:03,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:27:03,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:27:03,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:27:03,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:27:03,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:27:03,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:27:03,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:27:03,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:27:03,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:27:03,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:27:03,570 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:27:03,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:27:03,570 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:27:03,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:27:03,572 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:27:03,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:27:03,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:27:03,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:27:03,573 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:27:03,573 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:27:03,573 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:27:03,574 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:27:03,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:27:03,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:27:03,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:27:03,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:27:03,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:27:03,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:27:03,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:27:03,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:27:03,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:27:03,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:27:03,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:27:03,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:03,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:27:03,579 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:27:03,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:27:03,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:27:03,580 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:27:03,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:27:03,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:27:03,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:27:03,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2022-11-22 00:27:03,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:27:03,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:27:03,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:27:03,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:27:03,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:27:03,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-22 00:27:07,064 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:27:07,708 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:27:07,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-22 00:27:07,771 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/data/aa277ecc5/4b938a6e384e465ebf3409eabdbc7c3e/FLAG55fb58e20 [2022-11-22 00:27:07,788 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/data/aa277ecc5/4b938a6e384e465ebf3409eabdbc7c3e [2022-11-22 00:27:07,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:27:07,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:27:07,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:07,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:27:07,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:27:07,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:07" (1/1) ... [2022-11-22 00:27:07,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6791dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:07, skipping insertion in model container [2022-11-22 00:27:07,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:07" (1/1) ... [2022-11-22 00:27:07,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:27:08,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:27:12,314 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-22 00:27:12,317 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-22 00:27:12,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:12,385 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:27:12,851 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-22 00:27:12,852 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-22 00:27:12,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:13,129 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:27:13,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13 WrapperNode [2022-11-22 00:27:13,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:13,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:13,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:27:13,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:27:13,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,375 INFO L138 Inliner]: procedures = 562, calls = 2372, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4531 [2022-11-22 00:27:13,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:13,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:27:13,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:27:13,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:27:13,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:27:13,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:27:13,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:27:13,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:27:13,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (1/1) ... [2022-11-22 00:27:13,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:13,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:13,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:27:13,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db25edb2-dc7a-449b-ace8-0c12e230ca32/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:27:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-11-22 00:27:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-11-22 00:27:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:27:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:27:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-22 00:27:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-22 00:27:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-22 00:27:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-22 00:27:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:27:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:27:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-22 00:27:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-22 00:27:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-11-22 00:27:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-11-22 00:27:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 00:27:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 00:27:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2022-11-22 00:27:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2022-11-22 00:27:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:27:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:27:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-11-22 00:27:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-11-22 00:27:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2022-11-22 00:27:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2022-11-22 00:27:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-11-22 00:27:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-11-22 00:27:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-11-22 00:27:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-11-22 00:27:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-11-22 00:27:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-11-22 00:27:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:27:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:27:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-11-22 00:27:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-11-22 00:27:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-11-22 00:27:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-11-22 00:27:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:27:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:27:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:27:13,754 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:27:13,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:27:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:27:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-11-22 00:27:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-11-22 00:27:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:27:13,755 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 00:27:13,755 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 00:27:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-11-22 00:27:13,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-11-22 00:27:13,756 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-11-22 00:27:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-11-22 00:27:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:27:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:27:13,757 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-11-22 00:27:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-11-22 00:27:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-22 00:27:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-22 00:27:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 00:27:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 00:27:13,758 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:27:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:27:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:27:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:27:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:27:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:27:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:27:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:27:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:27:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:27:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2022-11-22 00:27:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2022-11-22 00:27:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:27:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:27:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 00:27:13,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 00:27:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-11-22 00:27:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-11-22 00:27:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-22 00:27:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-22 00:27:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-22 00:27:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-22 00:27:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:27:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:27:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:27:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:27:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:27:13,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:27:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:27:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-22 00:27:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-22 00:27:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-22 00:27:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-22 00:27:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-11-22 00:27:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-11-22 00:27:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 00:27:13,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 00:27:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:27:13,766 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:27:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:27:13,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:27:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:27:13,767 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:27:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-11-22 00:27:13,767 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-11-22 00:27:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:27:13,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:27:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-22 00:27:13,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-22 00:27:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 00:27:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 00:27:13,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:27:13,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:27:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-11-22 00:27:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-11-22 00:27:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-22 00:27:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-22 00:27:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-11-22 00:27:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-11-22 00:27:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 00:27:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 00:27:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:27:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:27:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-22 00:27:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-22 00:27:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:27:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:27:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:27:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:27:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-22 00:27:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-22 00:27:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-11-22 00:27:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-11-22 00:27:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-22 00:27:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-22 00:27:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:27:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-11-22 00:27:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-11-22 00:27:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-11-22 00:27:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-11-22 00:27:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-22 00:27:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-22 00:27:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:27:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-22 00:27:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-22 00:27:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2022-11-22 00:27:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2022-11-22 00:27:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2022-11-22 00:27:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2022-11-22 00:27:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:27:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-22 00:27:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-22 00:27:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-11-22 00:27:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-11-22 00:27:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-11-22 00:27:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-11-22 00:27:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:27:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:27:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:27:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:27:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-22 00:27:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-22 00:27:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-11-22 00:27:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-11-22 00:27:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 00:27:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 00:27:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2022-11-22 00:27:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2022-11-22 00:27:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-22 00:27:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-22 00:27:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-11-22 00:27:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-11-22 00:27:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-22 00:27:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-22 00:27:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:27:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:27:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:27:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:27:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-22 00:27:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-22 00:27:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-11-22 00:27:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-11-22 00:27:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:27:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:27:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:27:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:27:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-22 00:27:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-22 00:27:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:27:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:27:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:27:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:27:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:27:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2022-11-22 00:27:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2022-11-22 00:27:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-22 00:27:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-22 00:27:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 00:27:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 00:27:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-22 00:27:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-22 00:27:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2022-11-22 00:27:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2022-11-22 00:27:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2022-11-22 00:27:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2022-11-22 00:27:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 00:27:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 00:27:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-22 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-22 00:27:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:27:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2022-11-22 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2022-11-22 00:27:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2022-11-22 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2022-11-22 00:27:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:27:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:27:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 00:27:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-22 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-22 00:27:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-11-22 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-11-22 00:27:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-11-22 00:27:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-11-22 00:27:14,667 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:27:14,671 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:27:14,880 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:27:20,104 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:27:20,304 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:27:21,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:27:21,297 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:27:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:27:21 BoogieIcfgContainer [2022-11-22 00:27:21,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:27:21,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:27:21,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:27:21,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:27:21,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:27:07" (1/3) ... [2022-11-22 00:27:21,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3711a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:27:21, skipping insertion in model container [2022-11-22 00:27:21,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:13" (2/3) ... [2022-11-22 00:27:21,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3711a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:27:21, skipping insertion in model container [2022-11-22 00:27:21,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:27:21" (3/3) ... [2022-11-22 00:27:21,311 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-22 00:27:21,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:27:21,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:27:21,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:27:21,449 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc1689b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:27:21,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:27:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 716 states have (on average 1.2779329608938548) internal successors, (915), 735 states have internal predecessors, (915), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) [2022-11-22 00:27:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-22 00:27:21,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:21,528 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 3, 3, 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] [2022-11-22 00:27:21,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:21,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2048902024, now seen corresponding path program 1 times [2022-11-22 00:27:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:21,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643556312] [2022-11-22 00:27:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2022-11-22 00:27:22,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:22,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643556312] [2022-11-22 00:27:22,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643556312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:22,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:22,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056925348] [2022-11-22 00:27:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:22,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:22,839 INFO L87 Difference]: Start difference. First operand has 1253 states, 716 states have (on average 1.2779329608938548) internal successors, (915), 735 states have internal predecessors, (915), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-22 00:27:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:26,216 INFO L93 Difference]: Finished difference Result 3603 states and 5105 transitions. [2022-11-22 00:27:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2022-11-22 00:27:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:26,260 INFO L225 Difference]: With dead ends: 3603 [2022-11-22 00:27:26,260 INFO L226 Difference]: Without dead ends: 2339 [2022-11-22 00:27:26,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:26,277 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 1615 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:26,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 3384 Invalid, 557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 00:27:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-11-22 00:27:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2335. [2022-11-22 00:27:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1366 states have (on average 1.274524158125915) internal successors, (1741), 1404 states have internal predecessors, (1741), 762 states have call successors, (762), 206 states have call predecessors, (762), 206 states have return successors, (762), 758 states have call predecessors, (762), 762 states have call successors, (762) [2022-11-22 00:27:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3265 transitions. [2022-11-22 00:27:26,583 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3265 transitions. Word has length 395 [2022-11-22 00:27:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:26,591 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3265 transitions. [2022-11-22 00:27:26,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-22 00:27:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3265 transitions. [2022-11-22 00:27:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-22 00:27:26,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:26,619 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:27:26,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:27:26,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash 926108702, now seen corresponding path program 1 times [2022-11-22 00:27:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138195785] [2022-11-22 00:27:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:26,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-22 00:27:27,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138195785] [2022-11-22 00:27:27,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138195785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:27,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:27,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:27,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081431984] [2022-11-22 00:27:27,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:27,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:27,309 INFO L87 Difference]: Start difference. First operand 2335 states and 3265 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 00:27:29,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:30,534 INFO L93 Difference]: Finished difference Result 6825 states and 9524 transitions. [2022-11-22 00:27:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:30,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2022-11-22 00:27:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:30,571 INFO L225 Difference]: With dead ends: 6825 [2022-11-22 00:27:30,571 INFO L226 Difference]: Without dead ends: 4549 [2022-11-22 00:27:30,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:30,587 INFO L413 NwaCegarLoop]: 1821 mSDtfsCounter, 1553 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:30,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3244 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 00:27:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2022-11-22 00:27:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4545. [2022-11-22 00:27:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 2666 states have (on average 1.275318829707427) internal successors, (3400), 2744 states have internal predecessors, (3400), 1467 states have call successors, (1467), 411 states have call predecessors, (1467), 411 states have return successors, (1467), 1457 states have call predecessors, (1467), 1467 states have call successors, (1467) [2022-11-22 00:27:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 6334 transitions. [2022-11-22 00:27:30,866 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 6334 transitions. Word has length 399 [2022-11-22 00:27:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 4545 states and 6334 transitions. [2022-11-22 00:27:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 00:27:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 6334 transitions. [2022-11-22 00:27:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-22 00:27:30,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:30,892 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:27:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:27:30,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2137029920, now seen corresponding path program 1 times [2022-11-22 00:27:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:30,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734997808] [2022-11-22 00:27:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-22 00:27:31,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734997808] [2022-11-22 00:27:31,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734997808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:31,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:31,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285501330] [2022-11-22 00:27:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:31,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:31,414 INFO L87 Difference]: Start difference. First operand 4545 states and 6334 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 00:27:33,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:35,574 INFO L93 Difference]: Finished difference Result 13391 states and 18635 transitions. [2022-11-22 00:27:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2022-11-22 00:27:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:35,634 INFO L225 Difference]: With dead ends: 13391 [2022-11-22 00:27:35,634 INFO L226 Difference]: Without dead ends: 8905 [2022-11-22 00:27:35,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:35,657 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 1552 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:35,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 3391 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 00:27:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2022-11-22 00:27:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8901. [2022-11-22 00:27:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8901 states, 5232 states have (on average 1.2744648318042813) internal successors, (6668), 5390 states have internal predecessors, (6668), 2849 states have call successors, (2849), 819 states have call predecessors, (2849), 819 states have return successors, (2849), 2827 states have call predecessors, (2849), 2849 states have call successors, (2849) [2022-11-22 00:27:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 12366 transitions. [2022-11-22 00:27:36,210 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 12366 transitions. Word has length 400 [2022-11-22 00:27:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:36,211 INFO L495 AbstractCegarLoop]: Abstraction has 8901 states and 12366 transitions. [2022-11-22 00:27:36,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 00:27:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 12366 transitions. [2022-11-22 00:27:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-22 00:27:36,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:36,239 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 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] [2022-11-22 00:27:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:27:36,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -598077060, now seen corresponding path program 1 times [2022-11-22 00:27:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830351635] [2022-11-22 00:27:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2022-11-22 00:27:36,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830351635] [2022-11-22 00:27:36,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830351635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:36,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:36,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010970898] [2022-11-22 00:27:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:36,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:36,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:36,785 INFO L87 Difference]: Start difference. First operand 8901 states and 12366 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-22 00:27:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:40,688 INFO L93 Difference]: Finished difference Result 18826 states and 26090 transitions. [2022-11-22 00:27:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 415 [2022-11-22 00:27:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:40,761 INFO L225 Difference]: With dead ends: 18826 [2022-11-22 00:27:40,761 INFO L226 Difference]: Without dead ends: 9984 [2022-11-22 00:27:40,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:40,802 INFO L413 NwaCegarLoop]: 1840 mSDtfsCounter, 1415 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:40,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3245 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:27:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2022-11-22 00:27:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9982. [2022-11-22 00:27:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 5869 states have (on average 1.2715965241097291) internal successors, (7463), 6045 states have internal predecessors, (7463), 3172 states have call successors, (3172), 940 states have call predecessors, (3172), 940 states have return successors, (3172), 3149 states have call predecessors, (3172), 3172 states have call successors, (3172) [2022-11-22 00:27:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 13807 transitions. [2022-11-22 00:27:41,632 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 13807 transitions. Word has length 415 [2022-11-22 00:27:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:41,633 INFO L495 AbstractCegarLoop]: Abstraction has 9982 states and 13807 transitions. [2022-11-22 00:27:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-22 00:27:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 13807 transitions. [2022-11-22 00:27:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-22 00:27:41,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:41,665 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 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] [2022-11-22 00:27:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:27:41,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1708739317, now seen corresponding path program 1 times [2022-11-22 00:27:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173128355] [2022-11-22 00:27:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-22 00:27:42,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:42,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173128355] [2022-11-22 00:27:42,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173128355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:42,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:42,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611214973] [2022-11-22 00:27:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:42,112 INFO L87 Difference]: Start difference. First operand 9982 states and 13807 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:27:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:46,450 INFO L93 Difference]: Finished difference Result 23284 states and 32212 transitions. [2022-11-22 00:27:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 448 [2022-11-22 00:27:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:46,543 INFO L225 Difference]: With dead ends: 23284 [2022-11-22 00:27:46,543 INFO L226 Difference]: Without dead ends: 14370 [2022-11-22 00:27:46,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:46,576 INFO L413 NwaCegarLoop]: 2586 mSDtfsCounter, 1552 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:46,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 4007 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 00:27:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2022-11-22 00:27:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 14366. [2022-11-22 00:27:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 8447 states have (on average 1.2718124778027702) internal successors, (10743), 8703 states have internal predecessors, (10743), 4558 states have call successors, (4558), 1360 states have call predecessors, (4558), 1360 states have return successors, (4558), 4523 states have call predecessors, (4558), 4558 states have call successors, (4558) [2022-11-22 00:27:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 19859 transitions. [2022-11-22 00:27:47,322 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 19859 transitions. Word has length 448 [2022-11-22 00:27:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:47,323 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 19859 transitions. [2022-11-22 00:27:47,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:27:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 19859 transitions. [2022-11-22 00:27:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-22 00:27:47,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:47,358 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 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] [2022-11-22 00:27:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:27:47,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:47,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 883224132, now seen corresponding path program 1 times [2022-11-22 00:27:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:47,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200100211] [2022-11-22 00:27:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2022-11-22 00:27:47,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:47,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200100211] [2022-11-22 00:27:47,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200100211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:47,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:47,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060116667] [2022-11-22 00:27:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:47,830 INFO L87 Difference]: Start difference. First operand 14366 states and 19859 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-22 00:27:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:51,510 INFO L93 Difference]: Finished difference Result 34167 states and 47232 transitions. [2022-11-22 00:27:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2022-11-22 00:27:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:51,620 INFO L225 Difference]: With dead ends: 34167 [2022-11-22 00:27:51,620 INFO L226 Difference]: Without dead ends: 20869 [2022-11-22 00:27:51,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:51,675 INFO L413 NwaCegarLoop]: 2602 mSDtfsCounter, 1549 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:51,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 4023 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 00:27:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20869 states. [2022-11-22 00:27:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20869 to 20865. [2022-11-22 00:27:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20865 states, 12266 states have (on average 1.2715636719386922) internal successors, (15597), 12642 states have internal predecessors, (15597), 6611 states have call successors, (6611), 1987 states have call predecessors, (6611), 1987 states have return successors, (6611), 6558 states have call predecessors, (6611), 6611 states have call successors, (6611) [2022-11-22 00:27:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20865 states to 20865 states and 28819 transitions. [2022-11-22 00:27:53,228 INFO L78 Accepts]: Start accepts. Automaton has 20865 states and 28819 transitions. Word has length 443 [2022-11-22 00:27:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:53,229 INFO L495 AbstractCegarLoop]: Abstraction has 20865 states and 28819 transitions. [2022-11-22 00:27:53,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-22 00:27:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 20865 states and 28819 transitions. [2022-11-22 00:27:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-22 00:27:53,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:53,263 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 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] [2022-11-22 00:27:53,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:27:53,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash -196760215, now seen corresponding path program 1 times [2022-11-22 00:27:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:53,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077700532] [2022-11-22 00:27:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-22 00:27:53,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077700532] [2022-11-22 00:27:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077700532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:53,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:53,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:27:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564262007] [2022-11-22 00:27:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:53,787 INFO L87 Difference]: Start difference. First operand 20865 states and 28819 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:27:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:58,028 INFO L93 Difference]: Finished difference Result 50389 states and 69602 transitions. [2022-11-22 00:27:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:27:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2022-11-22 00:27:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:58,160 INFO L225 Difference]: With dead ends: 50389 [2022-11-22 00:27:58,161 INFO L226 Difference]: Without dead ends: 30592 [2022-11-22 00:27:58,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:58,217 INFO L413 NwaCegarLoop]: 2609 mSDtfsCounter, 1553 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:58,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 4030 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:27:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30592 states. [2022-11-22 00:27:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30592 to 30588. [2022-11-22 00:28:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30588 states, 17983 states have (on average 1.2713674025468498) internal successors, (22863), 18539 states have internal predecessors, (22863), 9677 states have call successors, (9677), 2927 states have call predecessors, (9677), 2927 states have return successors, (9677), 9597 states have call predecessors, (9677), 9677 states have call successors, (9677) [2022-11-22 00:28:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30588 states to 30588 states and 42217 transitions. [2022-11-22 00:28:00,232 INFO L78 Accepts]: Start accepts. Automaton has 30588 states and 42217 transitions. Word has length 447 [2022-11-22 00:28:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:00,234 INFO L495 AbstractCegarLoop]: Abstraction has 30588 states and 42217 transitions. [2022-11-22 00:28:00,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:28:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30588 states and 42217 transitions. [2022-11-22 00:28:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-11-22 00:28:00,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:00,421 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 4, 4, 3, 3, 3, 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] [2022-11-22 00:28:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:28:00,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash 688283857, now seen corresponding path program 1 times [2022-11-22 00:28:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:00,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588617591] [2022-11-22 00:28:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3585 trivial. 0 not checked. [2022-11-22 00:28:01,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:01,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588617591] [2022-11-22 00:28:01,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588617591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:01,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:01,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7278585] [2022-11-22 00:28:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:01,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:01,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:01,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:01,083 INFO L87 Difference]: Start difference. First operand 30588 states and 42217 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-22 00:28:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:06,001 INFO L93 Difference]: Finished difference Result 73845 states and 101691 transitions. [2022-11-22 00:28:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:06,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 470 [2022-11-22 00:28:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:06,197 INFO L225 Difference]: With dead ends: 73845 [2022-11-22 00:28:06,198 INFO L226 Difference]: Without dead ends: 43316 [2022-11-22 00:28:06,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:06,384 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 822 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:06,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 3062 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 00:28:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43316 states. [2022-11-22 00:28:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43316 to 43287. [2022-11-22 00:28:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43287 states, 25587 states have (on average 1.263454097784031) internal successors, (32328), 26307 states have internal predecessors, (32328), 13463 states have call successors, (13463), 4236 states have call predecessors, (13463), 4236 states have return successors, (13463), 13305 states have call predecessors, (13463), 13463 states have call successors, (13463) [2022-11-22 00:28:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43287 states to 43287 states and 59254 transitions. [2022-11-22 00:28:08,762 INFO L78 Accepts]: Start accepts. Automaton has 43287 states and 59254 transitions. Word has length 470 [2022-11-22 00:28:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:08,763 INFO L495 AbstractCegarLoop]: Abstraction has 43287 states and 59254 transitions. [2022-11-22 00:28:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-22 00:28:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 43287 states and 59254 transitions. [2022-11-22 00:28:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-22 00:28:08,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:08,831 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 6, 6, 4, 4, 4, 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] [2022-11-22 00:28:08,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:28:08,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1290309766, now seen corresponding path program 1 times [2022-11-22 00:28:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020299569] [2022-11-22 00:28:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2022-11-22 00:28:09,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:09,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020299569] [2022-11-22 00:28:09,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020299569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:09,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:09,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:28:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68526058] [2022-11-22 00:28:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:09,829 INFO L87 Difference]: Start difference. First operand 43287 states and 59254 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:28:14,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:18,942 INFO L93 Difference]: Finished difference Result 100305 states and 137252 transitions. [2022-11-22 00:28:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 466 [2022-11-22 00:28:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:19,288 INFO L225 Difference]: With dead ends: 100305 [2022-11-22 00:28:19,288 INFO L226 Difference]: Without dead ends: 57387 [2022-11-22 00:28:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:19,437 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 1578 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:19,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4746 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 00:28:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57387 states. [2022-11-22 00:28:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57387 to 57381. [2022-11-22 00:28:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57381 states, 33921 states have (on average 1.262462781168008) internal successors, (42824), 34880 states have internal predecessors, (42824), 17793 states have call successors, (17793), 5666 states have call predecessors, (17793), 5666 states have return successors, (17793), 17581 states have call predecessors, (17793), 17793 states have call successors, (17793) [2022-11-22 00:28:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57381 states to 57381 states and 78410 transitions. [2022-11-22 00:28:22,213 INFO L78 Accepts]: Start accepts. Automaton has 57381 states and 78410 transitions. Word has length 466 [2022-11-22 00:28:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:22,214 INFO L495 AbstractCegarLoop]: Abstraction has 57381 states and 78410 transitions. [2022-11-22 00:28:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 00:28:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 57381 states and 78410 transitions. [2022-11-22 00:28:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-22 00:28:22,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:22,279 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 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] [2022-11-22 00:28:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:28:22,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -823706830, now seen corresponding path program 1 times [2022-11-22 00:28:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490886] [2022-11-22 00:28:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-22 00:28:23,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490886] [2022-11-22 00:28:23,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:23,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:28:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786185231] [2022-11-22 00:28:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:23,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:23,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:23,239 INFO L87 Difference]: Start difference. First operand 57381 states and 78410 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 00:28:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:33,329 INFO L93 Difference]: Finished difference Result 133185 states and 181944 transitions. [2022-11-22 00:28:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 471 [2022-11-22 00:28:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:33,755 INFO L225 Difference]: With dead ends: 133185 [2022-11-22 00:28:33,755 INFO L226 Difference]: Without dead ends: 76173 [2022-11-22 00:28:33,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:33,948 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 1582 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:33,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 4759 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 00:28:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76173 states. [2022-11-22 00:28:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76173 to 76167. [2022-11-22 00:28:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76167 states, 45041 states have (on average 1.26165049621456) internal successors, (56826), 46318 states have internal predecessors, (56826), 23545 states have call successors, (23545), 7580 states have call predecessors, (23545), 7580 states have return successors, (23545), 23261 states have call predecessors, (23545), 23545 states have call successors, (23545) [2022-11-22 00:28:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76167 states to 76167 states and 103916 transitions. [2022-11-22 00:28:37,728 INFO L78 Accepts]: Start accepts. Automaton has 76167 states and 103916 transitions. Word has length 471 [2022-11-22 00:28:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:37,729 INFO L495 AbstractCegarLoop]: Abstraction has 76167 states and 103916 transitions. [2022-11-22 00:28:37,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 00:28:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 76167 states and 103916 transitions. [2022-11-22 00:28:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-22 00:28:37,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:37,784 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 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] [2022-11-22 00:28:37,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:28:37,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 862596066, now seen corresponding path program 1 times [2022-11-22 00:28:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:37,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878513907] [2022-11-22 00:28:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-22 00:28:38,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878513907] [2022-11-22 00:28:38,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878513907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:38,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:38,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:28:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180176086] [2022-11-22 00:28:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:38,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:38,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:38,741 INFO L87 Difference]: Start difference. First operand 76167 states and 103916 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 00:28:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:47,377 INFO L93 Difference]: Finished difference Result 176895 states and 241283 transitions. [2022-11-22 00:28:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:47,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 473 [2022-11-22 00:28:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:47,797 INFO L225 Difference]: With dead ends: 176895 [2022-11-22 00:28:47,797 INFO L226 Difference]: Without dead ends: 101097 [2022-11-22 00:28:47,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:47,965 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 1581 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:47,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 4759 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 00:28:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101097 states.