./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-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:17:08,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:17:08,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:17:08,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:17:08,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:17:08,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:17:08,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:17:08,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:17:08,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:17:08,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:17:08,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:17:08,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:17:08,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:17:08,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:17:08,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:17:08,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:17:08,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:17:08,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:17:08,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:17:08,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:17:08,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:17:08,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:17:08,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:17:08,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:17:08,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:17:08,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:17:08,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:17:08,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:17:08,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:17:08,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:17:08,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:17:08,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:17:08,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:17:08,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:17:08,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:17:08,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:17:08,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:17:08,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:17:08,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:17:08,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:17:08,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:17:08,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:17:08,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:17:08,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:17:08,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:17:08,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:17:08,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:17:08,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:17:08,679 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:17:08,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:17:08,680 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:17:08,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:17:08,681 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:17:08,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:17:08,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:17:08,682 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:17:08,682 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:17:08,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:17:08,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:17:08,683 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:17:08,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:17:08,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:17:08,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:17:08,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:17:08,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:17:08,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:17:08,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:17:08,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:17:08,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:17:08,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:17:08,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:17:08,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:17:08,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:17:08,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:17:08,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:17:08,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:17:08,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:17:08,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:17:08,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:17:08,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:17:08,691 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd [2021-11-21 01:17:08,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:17:08,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:17:08,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:17:08,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:17:08,957 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:17:08,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-21 01:17:09,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/data/d04640f62/69be3d2c06c14a8e859e4d49fc44b547/FLAG0e11f9ad8 [2021-11-21 01:17:10,039 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:17:10,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-21 01:17:10,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/data/d04640f62/69be3d2c06c14a8e859e4d49fc44b547/FLAG0e11f9ad8 [2021-11-21 01:17:10,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/data/d04640f62/69be3d2c06c14a8e859e4d49fc44b547 [2021-11-21 01:17:10,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:17:10,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:17:10,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:17:10,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:17:10,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:17:10,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:17:10" (1/1) ... [2021-11-21 01:17:10,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9b5afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:10, skipping insertion in model container [2021-11-21 01:17:10,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:17:10" (1/1) ... [2021-11-21 01:17:10,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:17:10,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:17:14,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-21 01:17:14,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-21 01:17:14,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:17:14,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:17:15,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-21 01:17:15,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-21 01:17:15,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:17:15,335 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:17:15,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15 WrapperNode [2021-11-21 01:17:15,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:17:15,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:17:15,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:17:15,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:17:15,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:15,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:15,777 INFO L137 Inliner]: procedures = 510, calls = 2610, calls flagged for inlining = 246, calls inlined = 216, statements flattened = 5468 [2021-11-21 01:17:15,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:17:15,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:17:15,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:17:15,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:17:15,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:15,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:15,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:15,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:16,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:16,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:16,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:16,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:17:16,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:17:16,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:17:16,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:17:16,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (1/1) ... [2021-11-21 01:17:16,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:17:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:16,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:17:16,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:17:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure drain_rx [2021-11-21 01:17:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_rx [2021-11-21 01:17:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 01:17:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-21 01:17:16,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-21 01:17:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_write [2021-11-21 01:17:16,216 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_write [2021-11-21 01:17:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:17:16,216 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:17:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:17:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:17:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:17:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:17:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_tx_done [2021-11-21 01:17:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_tx_done [2021-11-21 01:17:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-21 01:17:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-21 01:17:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:17:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:17:16,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:17:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:17:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_rx [2021-11-21 01:17:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_rx [2021-11-21 01:17:16,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_92 [2021-11-21 01:17:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_92 [2021-11-21 01:17:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:17:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:17:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_ring [2021-11-21 01:17:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_ring [2021-11-21 01:17:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:17:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:17:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:17:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:17:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:17:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:17:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:17:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:17:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:17:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:17:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:17:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:17:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:17:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:17:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:17:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:17:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:17:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:17:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:17:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:17:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-21 01:17:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-21 01:17:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:17:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:17:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:17:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:17:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:17:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:17:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:17:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-21 01:17:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-21 01:17:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-21 01:17:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-21 01:17:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:17:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:17:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_read [2021-11-21 01:17:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_read [2021-11-21 01:17:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:17:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:17:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_stop_rxtx [2021-11-21 01:17:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_stop_rxtx [2021-11-21 01:17:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure ns_tx_timeout [2021-11-21 01:17:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_tx_timeout [2021-11-21 01:17:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:17:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:17:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:17:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:17:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:17:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_reset [2021-11-21 01:17:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_reset [2021-11-21 01:17:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:17:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:17:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:17:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:17:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 01:17:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 01:17:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:17:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:17:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:17:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:17:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure move_int_phy [2021-11-21 01:17:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure move_int_phy [2021-11-21 01:17:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:17:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:17:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:17:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:17:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:17:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:17:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:17:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:17:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:17:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:17:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure enable_wol_mode [2021-11-21 01:17:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_wol_mode [2021-11-21 01:17:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_resume [2021-11-21 01:17:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_resume [2021-11-21 01:17:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 01:17:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 01:17:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:17:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:17:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:17:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:17:16,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:17:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:17:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:17:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:17:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-21 01:17:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-21 01:17:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:17:16,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:17:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:17:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:17:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:17:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:17:16,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:17:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:17:16,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:17:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 01:17:16,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 01:17:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:17:16,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:17:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_poll_controller [2021-11-21 01:17:16,255 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_poll_controller [2021-11-21 01:17:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:17:16,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:17:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure check_link [2021-11-21 01:17:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure check_link [2021-11-21 01:17:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 01:17:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 01:17:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:17:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:17:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:17:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:17:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:17:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:17:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:17:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:17:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure init_phy_fixup [2021-11-21 01:17:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure init_phy_fixup [2021-11-21 01:17:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-21 01:17:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-21 01:17:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 01:17:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 01:17:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_result [2021-11-21 01:17:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_result [2021-11-21 01:17:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:17:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:17:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:17:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:17:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:17:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:17:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_external [2021-11-21 01:17:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_external [2021-11-21 01:17:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-21 01:17:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-21 01:17:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:17:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:17:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure get_eeprom_len [2021-11-21 01:17:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eeprom_len [2021-11-21 01:17:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-21 01:17:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-21 01:17:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-21 01:17:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-21 01:17:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure get_regs_len [2021-11-21 01:17:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_regs_len [2021-11-21 01:17:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:17:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:17:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-21 01:17:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-21 01:17:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-21 01:17:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-21 01:17:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_91 [2021-11-21 01:17:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_91 [2021-11-21 01:17:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:17:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:17:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:17:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:17:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-21 01:17:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-21 01:17:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:17:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:17:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:17:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:17:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-21 01:17:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-21 01:17:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:17:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_internal [2021-11-21 01:17:16,265 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_internal [2021-11-21 01:17:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:17:16,265 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:17:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure dump_ring [2021-11-21 01:17:16,265 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_ring [2021-11-21 01:17:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:17:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:17:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-21 01:17:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-21 01:17:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:17:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:17:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-21 01:17:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-21 01:17:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:17:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:17:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:17:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:17:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure __get_stats [2021-11-21 01:17:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_stats [2021-11-21 01:17:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure set_bufsize [2021-11-21 01:17:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bufsize [2021-11-21 01:17:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 01:17:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 01:17:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-21 01:17:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-21 01:17:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure drain_ring [2021-11-21 01:17:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_ring [2021-11-21 01:17:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:17:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:17:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:17:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:17:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:17:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:17:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:17:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:17:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_remove1 [2021-11-21 01:17:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_remove1 [2021-11-21 01:17:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-21 01:17:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-21 01:17:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:17:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring [2021-11-21 01:17:16,275 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring [2021-11-21 01:17:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:17:16,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:17:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_disable [2021-11-21 01:17:16,275 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_disable [2021-11-21 01:17:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-21 01:17:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-21 01:17:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:17:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:17:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:17:16,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:17:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-21 01:17:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-21 01:17:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioaddr [2021-11-21 01:17:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioaddr [2021-11-21 01:17:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-21 01:17:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-21 01:17:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-21 01:17:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-21 01:17:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:17:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:17:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-21 01:17:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-21 01:17:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 01:17:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 01:17:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure drain_tx [2021-11-21 01:17:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_tx [2021-11-21 01:17:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_enable [2021-11-21 01:17:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_enable [2021-11-21 01:17:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:17:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:17:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:17:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_read [2021-11-21 01:17:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_read [2021-11-21 01:17:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:17:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:17:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-21 01:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-21 01:17:17,274 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:17:17,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:17:17,693 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:17:21,291 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:17:21,377 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:17:23,063 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:17:23,063 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:17:23,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:17:23 BoogieIcfgContainer [2021-11-21 01:17:23,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:17:23,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:17:23,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:17:23,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:17:23,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:17:10" (1/3) ... [2021-11-21 01:17:23,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f587e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:17:23, skipping insertion in model container [2021-11-21 01:17:23,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:15" (2/3) ... [2021-11-21 01:17:23,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f587e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:17:23, skipping insertion in model container [2021-11-21 01:17:23,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:17:23" (3/3) ... [2021-11-21 01:17:23,078 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-21 01:17:23,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:17:23,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:17:23,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:17:23,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:17:23,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:17:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 1933 states, 1051 states have (on average 1.2626070409134158) internal successors, (1327), 1086 states have internal predecessors, (1327), 752 states have call successors, (752), 130 states have call predecessors, (752), 129 states have return successors, (746), 737 states have call predecessors, (746), 746 states have call successors, (746) [2021-11-21 01:17:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:17:23,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:23,242 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 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] [2021-11-21 01:17:23,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash -307770063, now seen corresponding path program 1 times [2021-11-21 01:17:23,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903238001] [2021-11-21 01:17:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:23,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-21 01:17:24,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903238001] [2021-11-21 01:17:24,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903238001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:24,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:17:24,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507073729] [2021-11-21 01:17:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:24,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:24,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:24,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:24,151 INFO L87 Difference]: Start difference. First operand has 1933 states, 1051 states have (on average 1.2626070409134158) internal successors, (1327), 1086 states have internal predecessors, (1327), 752 states have call successors, (752), 130 states have call predecessors, (752), 129 states have return successors, (746), 737 states have call predecessors, (746), 746 states have call successors, (746) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:17:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:26,623 INFO L93 Difference]: Finished difference Result 5324 states and 7787 transitions. [2021-11-21 01:17:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:26,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 194 [2021-11-21 01:17:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:26,683 INFO L225 Difference]: With dead ends: 5324 [2021-11-21 01:17:26,683 INFO L226 Difference]: Without dead ends: 3360 [2021-11-21 01:17:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:26,707 INFO L933 BasicCegarLoop]: 3089 mSDtfsCounter, 2158 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:26,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 5530 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 01:17:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2021-11-21 01:17:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3356. [2021-11-21 01:17:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 1824 states have (on average 1.2450657894736843) internal successors, (2271), 1888 states have internal predecessors, (2271), 1289 states have call successors, (1289), 244 states have call predecessors, (1289), 242 states have return successors, (1290), 1267 states have call predecessors, (1290), 1289 states have call successors, (1290) [2021-11-21 01:17:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4850 transitions. [2021-11-21 01:17:27,123 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4850 transitions. Word has length 194 [2021-11-21 01:17:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:27,128 INFO L470 AbstractCegarLoop]: Abstraction has 3356 states and 4850 transitions. [2021-11-21 01:17:27,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:17:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4850 transitions. [2021-11-21 01:17:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-21 01:17:27,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:27,155 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 5, 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] [2021-11-21 01:17:27,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:17:27,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1032850254, now seen corresponding path program 1 times [2021-11-21 01:17:27,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366919294] [2021-11-21 01:17:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:27,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-21 01:17:27,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:27,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366919294] [2021-11-21 01:17:27,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366919294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:27,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:27,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:17:27,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952948830] [2021-11-21 01:17:27,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:27,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:27,520 INFO L87 Difference]: Start difference. First operand 3356 states and 4850 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:17:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:30,937 INFO L93 Difference]: Finished difference Result 9662 states and 13925 transitions. [2021-11-21 01:17:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 253 [2021-11-21 01:17:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:30,997 INFO L225 Difference]: With dead ends: 9662 [2021-11-21 01:17:30,998 INFO L226 Difference]: Without dead ends: 6337 [2021-11-21 01:17:31,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:31,027 INFO L933 BasicCegarLoop]: 3071 mSDtfsCounter, 2614 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 5356 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:31,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 5356 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-21 01:17:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2021-11-21 01:17:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6331. [2021-11-21 01:17:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 3483 states have (on average 1.248636233132357) internal successors, (4349), 3601 states have internal predecessors, (4349), 2378 states have call successors, (2378), 479 states have call predecessors, (2378), 469 states have return successors, (2387), 2326 states have call predecessors, (2387), 2378 states have call successors, (2387) [2021-11-21 01:17:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9114 transitions. [2021-11-21 01:17:31,624 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9114 transitions. Word has length 253 [2021-11-21 01:17:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:31,625 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 9114 transitions. [2021-11-21 01:17:31,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:17:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9114 transitions. [2021-11-21 01:17:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-21 01:17:31,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:31,638 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 9, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:31,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:17:31,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1485288081, now seen corresponding path program 1 times [2021-11-21 01:17:31,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009859313] [2021-11-21 01:17:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2021-11-21 01:17:31,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:31,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009859313] [2021-11-21 01:17:31,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009859313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:31,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:31,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:17:31,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990839405] [2021-11-21 01:17:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:31,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:31,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:31,907 INFO L87 Difference]: Start difference. First operand 6331 states and 9114 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:17:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:35,710 INFO L93 Difference]: Finished difference Result 16138 states and 23193 transitions. [2021-11-21 01:17:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:35,711 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 313 [2021-11-21 01:17:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:35,803 INFO L225 Difference]: With dead ends: 16138 [2021-11-21 01:17:35,803 INFO L226 Difference]: Without dead ends: 9838 [2021-11-21 01:17:35,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:35,850 INFO L933 BasicCegarLoop]: 3872 mSDtfsCounter, 1910 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 6274 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:35,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 6274 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-21 01:17:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9838 states. [2021-11-21 01:17:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9838 to 9832. [2021-11-21 01:17:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9832 states, 5480 states have (on average 1.2490875912408759) internal successors, (6845), 5647 states have internal predecessors, (6845), 3603 states have call successors, (3603), 758 states have call predecessors, (3603), 748 states have return successors, (3612), 3539 states have call predecessors, (3612), 3603 states have call successors, (3612) [2021-11-21 01:17:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 14060 transitions. [2021-11-21 01:17:36,669 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 14060 transitions. Word has length 313 [2021-11-21 01:17:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:36,670 INFO L470 AbstractCegarLoop]: Abstraction has 9832 states and 14060 transitions. [2021-11-21 01:17:36,671 INFO L471 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, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 01:17:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 14060 transitions. [2021-11-21 01:17:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-21 01:17:36,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:36,684 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 9, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:17:36,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1242738919, now seen corresponding path program 1 times [2021-11-21 01:17:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112544783] [2021-11-21 01:17:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:36,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2021-11-21 01:17:36,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112544783] [2021-11-21 01:17:36,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112544783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:36,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:36,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:17:36,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817067234] [2021-11-21 01:17:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:36,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:36,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:36,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:36,947 INFO L87 Difference]: Start difference. First operand 9832 states and 14060 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, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:17:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:41,007 INFO L93 Difference]: Finished difference Result 23136 states and 33081 transitions. [2021-11-21 01:17:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:41,008 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, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 360 [2021-11-21 01:17:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:41,108 INFO L225 Difference]: With dead ends: 23136 [2021-11-21 01:17:41,109 INFO L226 Difference]: Without dead ends: 13335 [2021-11-21 01:17:41,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:41,160 INFO L933 BasicCegarLoop]: 4102 mSDtfsCounter, 1911 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:41,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 6496 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:17:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13335 states. [2021-11-21 01:17:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13335 to 13329. [2021-11-21 01:17:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13329 states, 7473 states have (on average 1.2494312859627994) internal successors, (9337), 7689 states have internal predecessors, (9337), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-21 01:17:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13329 states to 13329 states and 19002 transitions. [2021-11-21 01:17:42,044 INFO L78 Accepts]: Start accepts. Automaton has 13329 states and 19002 transitions. Word has length 360 [2021-11-21 01:17:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:42,045 INFO L470 AbstractCegarLoop]: Abstraction has 13329 states and 19002 transitions. [2021-11-21 01:17:42,046 INFO L471 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, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 01:17:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 13329 states and 19002 transitions. [2021-11-21 01:17:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-21 01:17:42,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:42,063 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 9, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:42,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:17:42,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1031051200, now seen corresponding path program 1 times [2021-11-21 01:17:42,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:42,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422645617] [2021-11-21 01:17:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:42,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-21 01:17:42,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422645617] [2021-11-21 01:17:42,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422645617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:42,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:42,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:17:42,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854678182] [2021-11-21 01:17:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:42,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:42,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:42,395 INFO L87 Difference]: Start difference. First operand 13329 states and 19002 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:17:46,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:47,573 INFO L93 Difference]: Finished difference Result 26891 states and 38444 transitions. [2021-11-21 01:17:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:47,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 422 [2021-11-21 01:17:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:47,650 INFO L225 Difference]: With dead ends: 26891 [2021-11-21 01:17:47,650 INFO L226 Difference]: Without dead ends: 13593 [2021-11-21 01:17:47,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:47,704 INFO L933 BasicCegarLoop]: 2441 mSDtfsCounter, 13 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:47,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 4858 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 01:17:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13593 states. [2021-11-21 01:17:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13593 to 13369. [2021-11-21 01:17:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 7513 states have (on average 1.2481032876347664) internal successors, (9377), 7729 states have internal predecessors, (9377), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-21 01:17:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 19042 transitions. [2021-11-21 01:17:48,465 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 19042 transitions. Word has length 422 [2021-11-21 01:17:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:48,468 INFO L470 AbstractCegarLoop]: Abstraction has 13369 states and 19042 transitions. [2021-11-21 01:17:48,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:17:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 19042 transitions. [2021-11-21 01:17:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-21 01:17:48,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:48,479 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:48,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:17:48,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2147469820, now seen corresponding path program 1 times [2021-11-21 01:17:48,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:48,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559477254] [2021-11-21 01:17:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:48,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2021-11-21 01:17:48,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559477254] [2021-11-21 01:17:48,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559477254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:17:48,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355745227] [2021-11-21 01:17:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:48,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:17:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:48,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:17:48,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:17:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:50,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 4168 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:17:50,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1312 trivial. 0 not checked. [2021-11-21 01:17:51,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:17:51,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355745227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:51,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:17:51,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:17:51,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601183667] [2021-11-21 01:17:51,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:51,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:51,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:51,196 INFO L87 Difference]: Start difference. First operand 13369 states and 19042 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-21 01:17:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:53,838 INFO L93 Difference]: Finished difference Result 26715 states and 38082 transitions. [2021-11-21 01:17:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 464 [2021-11-21 01:17:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:53,927 INFO L225 Difference]: With dead ends: 26715 [2021-11-21 01:17:53,928 INFO L226 Difference]: Without dead ends: 13377 [2021-11-21 01:17:53,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:53,990 INFO L933 BasicCegarLoop]: 2436 mSDtfsCounter, 0 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:53,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4867 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 01:17:54,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13377 states. [2021-11-21 01:17:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13377 to 13377. [2021-11-21 01:17:54,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 7521 states have (on average 1.2478393830607633) internal successors, (9385), 7737 states have internal predecessors, (9385), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-21 01:17:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 19050 transitions. [2021-11-21 01:17:54,786 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 19050 transitions. Word has length 464 [2021-11-21 01:17:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:54,788 INFO L470 AbstractCegarLoop]: Abstraction has 13377 states and 19050 transitions. [2021-11-21 01:17:54,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-21 01:17:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 19050 transitions. [2021-11-21 01:17:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-21 01:17:54,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:54,799 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 9, 8, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:54,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:55,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:17:55,026 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1868297841, now seen corresponding path program 1 times [2021-11-21 01:17:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:55,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492354032] [2021-11-21 01:17:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:55,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2021-11-21 01:17:55,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:55,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492354032] [2021-11-21 01:17:55,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492354032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:17:55,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381369000] [2021-11-21 01:17:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:55,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:17:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:55,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:17:55,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:17:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 4182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:17:56,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-11-21 01:17:57,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:17:57,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381369000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:57,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:17:57,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:17:57,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470056220] [2021-11-21 01:17:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:57,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:57,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:57,579 INFO L87 Difference]: Start difference. First operand 13377 states and 19050 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 01:18:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:00,780 INFO L93 Difference]: Finished difference Result 26793 states and 38235 transitions. [2021-11-21 01:18:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:18:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 461 [2021-11-21 01:18:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:00,859 INFO L225 Difference]: With dead ends: 26793 [2021-11-21 01:18:00,859 INFO L226 Difference]: Without dead ends: 13447 [2021-11-21 01:18:00,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:18:00,917 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 5 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:00,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4869 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 01:18:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2021-11-21 01:18:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 13387. [2021-11-21 01:18:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 7531 states have (on average 1.2475102907980349) internal successors, (9395), 7747 states have internal predecessors, (9395), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-21 01:18:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 19060 transitions. [2021-11-21 01:18:01,595 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 19060 transitions. Word has length 461 [2021-11-21 01:18:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:01,596 INFO L470 AbstractCegarLoop]: Abstraction has 13387 states and 19060 transitions. [2021-11-21 01:18:01,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-21 01:18:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 19060 transitions. [2021-11-21 01:18:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-21 01:18:01,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:01,607 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:01,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:01,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:01,823 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -9295882, now seen corresponding path program 1 times [2021-11-21 01:18:01,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:01,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107849400] [2021-11-21 01:18:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:01,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2021-11-21 01:18:02,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:02,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107849400] [2021-11-21 01:18:02,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107849400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:18:02,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467999252] [2021-11-21 01:18:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:02,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:02,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:02,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:18:02,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deba37be-5b09-496b-9374-5ca8d61b3810/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:18:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:03,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 4187 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:18:03,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-21 01:18:04,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2021-11-21 01:18:05,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467999252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:18:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1942039150] [2021-11-21 01:18:05,598 INFO L159 IcfgInterpreter]: Started Sifa with 244 locations of interest [2021-11-21 01:18:05,598 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:18:05,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:18:05,610 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:18:05,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs