./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI --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 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:20:48,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:48,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:48,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:48,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:48,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:48,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:48,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:48,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:48,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:48,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:48,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:48,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:48,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:48,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:48,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:48,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:48,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:48,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:48,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:48,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:48,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:48,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:48,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:48,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:48,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:48,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:48,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:48,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:48,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:48,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:48,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:48,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:48,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:48,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:48,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:48,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:48,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:48,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:48,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:48,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:48,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:20:48,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:48,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:48,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:48,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:48,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:48,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:48,768 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:48,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:48,769 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:48,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:48,770 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:48,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:48,770 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:48,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:48,771 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:48,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:48,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:48,772 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:48,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:48,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:48,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:48,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:48,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:48,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:48,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:48,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:48,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:48,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:48,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:48,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:48,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:48,776 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:48,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:48,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:48,776 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:48,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:48,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:48,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:48,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 [2022-11-03 02:20:49,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:49,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:49,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:49,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:49,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:49,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-03 02:20:49,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/data/fc10fbb4d/a4484fb5ae8e4667b4b966056bf3082d/FLAGc11367cc0 [2022-11-03 02:20:50,368 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:50,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-03 02:20:50,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/data/fc10fbb4d/a4484fb5ae8e4667b4b966056bf3082d/FLAGc11367cc0 [2022-11-03 02:20:50,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/data/fc10fbb4d/a4484fb5ae8e4667b4b966056bf3082d [2022-11-03 02:20:50,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:50,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:50,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:50,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:50,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:50,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e3274e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50, skipping insertion in model container [2022-11-03 02:20:50,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:50,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:51,861 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_2b97de70-ddaa-4c8f-9129-2608cee733db/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2022-11-03 02:20:54,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:54,701 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:54,868 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_2b97de70-ddaa-4c8f-9129-2608cee733db/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2022-11-03 02:20:55,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:55,508 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:55,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55 WrapperNode [2022-11-03 02:20:55,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:55,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:55,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:55,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:55,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:55,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,008 INFO L138 Inliner]: procedures = 458, calls = 3190, calls flagged for inlining = 222, calls inlined = 195, statements flattened = 7513 [2022-11-03 02:20:56,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:56,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:56,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:56,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:56,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:56,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:56,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:56,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:56,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:56,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:56,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:56,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-03 02:20:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-03 02:20:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:20:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:20:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:20:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:20:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:20:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:20:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 02:20:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 02:20:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_function_pointers_vf [2022-11-03 02:20:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_function_pointers_vf [2022-11-03 02:20:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-03 02:20:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-03 02:20:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:20:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:20:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:20:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:20:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:20:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:20:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_alloc_rx_buffers [2022-11-03 02:20:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_alloc_rx_buffers [2022-11-03 02:20:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:20:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:20:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_mac_addr_vf [2022-11-03 02:20:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_mac_addr_vf [2022-11-03 02:20:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:20:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:20:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2022-11-03 02:20:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2022-11-03 02:20:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_maybe_stop_tx [2022-11-03 02:20:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_maybe_stop_tx [2022-11-03 02:20:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_mac [2022-11-03 02:20:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_mac [2022-11-03 02:20:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:20:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:20:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:20:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:20:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:20:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:20:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_irq [2022-11-03 02:20:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_irq [2022-11-03 02:20:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 02:20:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:20:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:20:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_suspend [2022-11-03 02:20:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_suspend [2022-11-03 02:20:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:20:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_ioctl [2022-11-03 02:20:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_ioctl [2022-11-03 02:20:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:20:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:20:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 02:20:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 02:20:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:20:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:20:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:20:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:20:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:20:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_assign_vector [2022-11-03 02:20:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_assign_vector [2022-11-03 02:20:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:20:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:20:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:20:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:20:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_change_mtu [2022-11-03 02:20:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_change_mtu [2022-11-03 02:20:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:20:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_desc_unused [2022-11-03 02:20:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_desc_unused [2022-11-03 02:20:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-03 02:20:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-03 02:20:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_error_detected [2022-11-03 02:20:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_error_detected [2022-11-03 02:20:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:20:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_netpoll [2022-11-03 02:20:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_netpoll [2022-11-03 02:20:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:20:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:20:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-03 02:20:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-03 02:20:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset_interrupt_capability [2022-11-03 02:20:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset_interrupt_capability [2022-11-03 02:20:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-03 02:20:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-03 02:20:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:20:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:20:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_msg_vf [2022-11-03 02:20:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_msg_vf [2022-11-03 02:20:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 02:20:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 02:20:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_tx_resources [2022-11-03 02:20:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_tx_resources [2022-11-03 02:20:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-03 02:20:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-03 02:20:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_3 [2022-11-03 02:20:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_3 [2022-11-03 02:20:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:20:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:20:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:20:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:20:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-03 02:20:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-03 02:20:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-03 02:20:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-03 02:20:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-03 02:20:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:20:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-03 02:20:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-03 02:20:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 02:20:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 02:20:56,687 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure_msix [2022-11-03 02:20:56,687 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure_msix [2022-11-03 02:20:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:20:56,688 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:20:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:20:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-03 02:20:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-03 02:20:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset [2022-11-03 02:20:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset [2022-11-03 02:20:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2022-11-03 02:20:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2022-11-03 02:20:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:20:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:20:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_enable [2022-11-03 02:20:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_enable [2022-11-03 02:20:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:20:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:20:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:20:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:20:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reinit_locked [2022-11-03 02:20:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reinit_locked [2022-11-03 02:20:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:20:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:20:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_update_stats [2022-11-03 02:20:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_update_stats [2022-11-03 02:20:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_add_vid [2022-11-03 02:20:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_add_vid [2022-11-03 02:20:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:20:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:20:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:20:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:20:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_bit_vf [2022-11-03 02:20:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_bit_vf [2022-11-03 02:20:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2022-11-03 02:20:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2022-11-03 02:20:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-03 02:20:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-03 02:20:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2022-11-03 02:20:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2022-11-03 02:20:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:20:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:20:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:20:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:20:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:20:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:20:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:20:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:20:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2022-11-03 02:20:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2022-11-03 02:20:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:20:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:20:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:20:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:20:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:20:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:20:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_down [2022-11-03 02:20:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_down [2022-11-03 02:20:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_regs_len [2022-11-03 02:20:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_regs_len [2022-11-03 02:20:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_6 [2022-11-03 02:20:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_6 [2022-11-03 02:20:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:20:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:20:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_irq [2022-11-03 02:20:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_irq [2022-11-03 02:20:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-03 02:20:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-03 02:20:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:20:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:20:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2022-11-03 02:20:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2022-11-03 02:20:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:20:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:20:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:20:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:20:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:20:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:20:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:20:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:20:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_ring [2022-11-03 02:20:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_ring [2022-11-03 02:20:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_v2p_mailbox [2022-11-03 02:20:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_v2p_mailbox [2022-11-03 02:20:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_3 [2022-11-03 02:20:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_3 [2022-11-03 02:20:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:20:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:20:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 02:20:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 02:20:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:20:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:20:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-03 02:20:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-03 02:20:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:20:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:20:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:20:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_remove [2022-11-03 02:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_remove [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_disable [2022-11-03 02:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_disable [2022-11-03 02:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 02:20:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 02:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_slot_reset [2022-11-03 02:20:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_slot_reset [2022-11-03 02:20:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure [2022-11-03 02:20:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure [2022-11-03 02:20:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_rx_resources [2022-11-03 02:20:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_rx_resources [2022-11-03 02:20:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_rx_ring [2022-11-03 02:20:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_rx_ring [2022-11-03 02:20:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:20:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:20:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_obtain_mbx_lock_vf [2022-11-03 02:20:56,713 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_obtain_mbx_lock_vf [2022-11-03 02:20:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 02:20:56,713 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 02:20:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:20:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_ack_vf [2022-11-03 02:20:56,714 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_ack_vf [2022-11-03 02:20:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:20:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:20:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 02:20:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 02:20:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:20:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:20:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_request_irq [2022-11-03 02:20:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_request_irq [2022-11-03 02:20:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:20:56,720 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:20:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:20:56,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:20:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_put_txbuf [2022-11-03 02:20:56,721 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_put_txbuf [2022-11-03 02:20:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:20:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:20:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2022-11-03 02:20:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2022-11-03 02:20:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-03 02:20:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-03 02:20:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:20:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:20:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:20:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:20:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:20:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:20:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_shutdown [2022-11-03 02:20:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_shutdown [2022-11-03 02:20:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 02:20:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 02:20:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:20:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:20:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_4 [2022-11-03 02:20:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_4 [2022-11-03 02:20:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 02:20:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 02:20:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_tx_resources [2022-11-03 02:20:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_tx_resources [2022-11-03 02:20:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:20:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:20:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_eeprom_len [2022-11-03 02:20:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_eeprom_len [2022-11-03 02:20:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:20:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_stats [2022-11-03 02:20:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_stats [2022-11-03 02:20:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:20:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:20:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:20:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:20:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_kill_vid [2022-11-03 02:20:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_kill_vid [2022-11-03 02:20:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-03 02:20:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-03 02:20:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:20:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:20:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:20:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:20:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-03 02:20:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-03 02:20:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_resume [2022-11-03 02:20:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_resume [2022-11-03 02:20:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:20:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:20:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_3 [2022-11-03 02:20:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_3 [2022-11-03 02:20:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:20:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:20:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_rx_resources [2022-11-03 02:20:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_rx_resources [2022-11-03 02:20:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_features [2022-11-03 02:20:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_features [2022-11-03 02:20:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_multi [2022-11-03 02:20:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_multi [2022-11-03 02:20:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_tx_timeout [2022-11-03 02:20:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_tx_timeout [2022-11-03 02:20:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:20:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:20:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:20:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:20:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2022-11-03 02:20:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2022-11-03 02:20:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 02:20:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 02:20:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_up [2022-11-03 02:20:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_up [2022-11-03 02:20:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:20:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:20:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 02:20:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 02:20:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:20:58,024 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:58,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:58,541 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:21:05,831 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:08,108 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:08,108 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:21:08,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:08 BoogieIcfgContainer [2022-11-03 02:21:08,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:08,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:08,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:08,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:08,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:50" (1/3) ... [2022-11-03 02:21:08,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd4adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:08, skipping insertion in model container [2022-11-03 02:21:08,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55" (2/3) ... [2022-11-03 02:21:08,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd4adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:08, skipping insertion in model container [2022-11-03 02:21:08,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:08" (3/3) ... [2022-11-03 02:21:08,124 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-03 02:21:08,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:08,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:21:08,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:08,243 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f853f66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:08,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:21:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 2262 states, 1397 states have (on average 1.3206871868289192) internal successors, (1845), 1457 states have internal predecessors, (1845), 709 states have call successors, (709), 155 states have call predecessors, (709), 154 states have return successors, (694), 680 states have call predecessors, (694), 694 states have call successors, (694) [2022-11-03 02:21:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:21:08,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:08,277 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:08,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -620801570, now seen corresponding path program 1 times [2022-11-03 02:21:08,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:08,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111696466] [2022-11-03 02:21:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:21:09,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111696466] [2022-11-03 02:21:09,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111696466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:09,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:09,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:09,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908396046] [2022-11-03 02:21:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:09,468 INFO L87 Difference]: Start difference. First operand has 2262 states, 1397 states have (on average 1.3206871868289192) internal successors, (1845), 1457 states have internal predecessors, (1845), 709 states have call successors, (709), 155 states have call predecessors, (709), 154 states have return successors, (694), 680 states have call predecessors, (694), 694 states have call successors, (694) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 02:21:11,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:12,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:16,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:18,515 INFO L93 Difference]: Finished difference Result 6711 states and 9709 transitions. [2022-11-03 02:21:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 79 [2022-11-03 02:21:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:18,581 INFO L225 Difference]: With dead ends: 6711 [2022-11-03 02:21:18,582 INFO L226 Difference]: Without dead ends: 4422 [2022-11-03 02:21:18,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:18,610 INFO L413 NwaCegarLoop]: 3607 mSDtfsCounter, 3159 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 6528 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:18,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 6528 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 636 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:21:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-11-03 02:21:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-11-03 02:21:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 2748 states have (on average 1.3038573508005822) internal successors, (3583), 2834 states have internal predecessors, (3583), 1367 states have call successors, (1367), 307 states have call predecessors, (1367), 306 states have return successors, (1366), 1338 states have call predecessors, (1366), 1366 states have call successors, (1366) [2022-11-03 02:21:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6316 transitions. [2022-11-03 02:21:18,983 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6316 transitions. Word has length 79 [2022-11-03 02:21:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:18,984 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 6316 transitions. [2022-11-03 02:21:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 02:21:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6316 transitions. [2022-11-03 02:21:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:21:19,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:19,001 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:21:19,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:19,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash -749753895, now seen corresponding path program 1 times [2022-11-03 02:21:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:19,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572599219] [2022-11-03 02:21:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:19,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:21:20,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572599219] [2022-11-03 02:21:20,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572599219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:20,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:20,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351016748] [2022-11-03 02:21:20,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:20,011 INFO L87 Difference]: Start difference. First operand 4422 states and 6316 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:21:24,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:29,591 INFO L93 Difference]: Finished difference Result 8407 states and 12030 transitions. [2022-11-03 02:21:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:21:29,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2022-11-03 02:21:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:29,652 INFO L225 Difference]: With dead ends: 8407 [2022-11-03 02:21:29,653 INFO L226 Difference]: Without dead ends: 8402 [2022-11-03 02:21:29,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:29,661 INFO L413 NwaCegarLoop]: 3606 mSDtfsCounter, 2845 mSDsluCounter, 7134 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 10091 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:29,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2845 Valid, 10091 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1011 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:21:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2022-11-03 02:21:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8394. [2022-11-03 02:21:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8394 states, 5235 states have (on average 1.3052531041069724) internal successors, (6833), 5383 states have internal predecessors, (6833), 2558 states have call successors, (2558), 601 states have call predecessors, (2558), 600 states have return successors, (2623), 2513 states have call predecessors, (2623), 2557 states have call successors, (2623) [2022-11-03 02:21:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8394 states to 8394 states and 12014 transitions. [2022-11-03 02:21:30,122 INFO L78 Accepts]: Start accepts. Automaton has 8394 states and 12014 transitions. Word has length 81 [2022-11-03 02:21:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:30,124 INFO L495 AbstractCegarLoop]: Abstraction has 8394 states and 12014 transitions. [2022-11-03 02:21:30,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:21:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8394 states and 12014 transitions. [2022-11-03 02:21:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 02:21:30,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:30,256 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2022-11-03 02:21:30,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:21:30,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1251889600, now seen corresponding path program 1 times [2022-11-03 02:21:30,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:30,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121439503] [2022-11-03 02:21:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:30,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:21:30,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:30,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121439503] [2022-11-03 02:21:30,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121439503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:30,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:30,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865008720] [2022-11-03 02:21:30,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:30,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:30,876 INFO L87 Difference]: Start difference. First operand 8394 states and 12014 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:21:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:37,804 INFO L93 Difference]: Finished difference Result 24088 states and 34396 transitions. [2022-11-03 02:21:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 143 [2022-11-03 02:21:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:37,949 INFO L225 Difference]: With dead ends: 24088 [2022-11-03 02:21:37,949 INFO L226 Difference]: Without dead ends: 15717 [2022-11-03 02:21:38,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:38,013 INFO L413 NwaCegarLoop]: 3507 mSDtfsCounter, 2614 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:38,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 6333 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 02:21:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15717 states. [2022-11-03 02:21:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15717 to 15712. [2022-11-03 02:21:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15712 states, 9845 states have (on average 1.306348400203149) internal successors, (12861), 10101 states have internal predecessors, (12861), 4714 states have call successors, (4714), 1153 states have call predecessors, (4714), 1152 states have return successors, (4833), 4641 states have call predecessors, (4833), 4713 states have call successors, (4833) [2022-11-03 02:21:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15712 states to 15712 states and 22408 transitions. [2022-11-03 02:21:39,026 INFO L78 Accepts]: Start accepts. Automaton has 15712 states and 22408 transitions. Word has length 143 [2022-11-03 02:21:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:39,029 INFO L495 AbstractCegarLoop]: Abstraction has 15712 states and 22408 transitions. [2022-11-03 02:21:39,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:21:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15712 states and 22408 transitions. [2022-11-03 02:21:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 02:21:39,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:39,067 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:39,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:21:39,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -949154851, now seen corresponding path program 1 times [2022-11-03 02:21:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:39,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840330201] [2022-11-03 02:21:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-03 02:21:40,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:40,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840330201] [2022-11-03 02:21:40,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840330201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:40,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:40,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397095775] [2022-11-03 02:21:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:21:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:21:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:21:40,305 INFO L87 Difference]: Start difference. First operand 15712 states and 22408 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:21:42,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:44,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:50,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:53,279 INFO L93 Difference]: Finished difference Result 23773 states and 33991 transitions. [2022-11-03 02:21:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:21:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 211 [2022-11-03 02:21:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:53,430 INFO L225 Difference]: With dead ends: 23773 [2022-11-03 02:21:53,430 INFO L226 Difference]: Without dead ends: 23768 [2022-11-03 02:21:53,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:53,455 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 3111 mSDsluCounter, 7073 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3111 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:53,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3111 Valid, 10028 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 946 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2022-11-03 02:21:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23768 states. [2022-11-03 02:21:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23768 to 23756. [2022-11-03 02:21:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23756 states, 14874 states have (on average 1.3061718434852763) internal successors, (19428), 15270 states have internal predecessors, (19428), 7147 states have call successors, (7147), 1735 states have call predecessors, (7147), 1734 states have return successors, (7392), 7032 states have call predecessors, (7392), 7146 states have call successors, (7392) [2022-11-03 02:21:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23756 states to 23756 states and 33967 transitions. [2022-11-03 02:21:54,774 INFO L78 Accepts]: Start accepts. Automaton has 23756 states and 33967 transitions. Word has length 211 [2022-11-03 02:21:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:54,776 INFO L495 AbstractCegarLoop]: Abstraction has 23756 states and 33967 transitions. [2022-11-03 02:21:54,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:21:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23756 states and 33967 transitions. [2022-11-03 02:21:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-03 02:21:54,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:54,856 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 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] [2022-11-03 02:21:54,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:21:54,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:54,857 INFO L85 PathProgramCache]: Analyzing trace with hash -260329812, now seen corresponding path program 1 times [2022-11-03 02:21:54,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:54,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672084674] [2022-11-03 02:21:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:54,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-03 02:21:55,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:55,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672084674] [2022-11-03 02:21:55,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672084674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:55,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:55,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:55,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263609612] [2022-11-03 02:21:55,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:55,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:55,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:55,432 INFO L87 Difference]: Start difference. First operand 23756 states and 33967 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:21:57,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:00,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:02,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:06,201 INFO L93 Difference]: Finished difference Result 70252 states and 100490 transitions. [2022-11-03 02:22:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 306 [2022-11-03 02:22:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:06,461 INFO L225 Difference]: With dead ends: 70252 [2022-11-03 02:22:06,461 INFO L226 Difference]: Without dead ends: 46519 [2022-11-03 02:22:06,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:06,567 INFO L413 NwaCegarLoop]: 3900 mSDtfsCounter, 3083 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3096 SdHoareTripleChecker+Valid, 6721 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:06,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3096 Valid, 6721 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 704 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:22:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46519 states. [2022-11-03 02:22:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46519 to 46511. [2022-11-03 02:22:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46511 states, 29123 states have (on average 1.3043642481887168) internal successors, (37987), 29898 states have internal predecessors, (37987), 13999 states have call successors, (13999), 3389 states have call predecessors, (13999), 3388 states have return successors, (14552), 13767 states have call predecessors, (14552), 13998 states have call successors, (14552) [2022-11-03 02:22:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46511 states to 46511 states and 66538 transitions. [2022-11-03 02:22:09,318 INFO L78 Accepts]: Start accepts. Automaton has 46511 states and 66538 transitions. Word has length 306 [2022-11-03 02:22:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:09,319 INFO L495 AbstractCegarLoop]: Abstraction has 46511 states and 66538 transitions. [2022-11-03 02:22:09,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 02:22:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 46511 states and 66538 transitions. [2022-11-03 02:22:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-03 02:22:09,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:09,734 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:09,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1204074052, now seen corresponding path program 1 times [2022-11-03 02:22:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:09,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474236590] [2022-11-03 02:22:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-03 02:22:10,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474236590] [2022-11-03 02:22:10,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474236590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:10,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:10,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626195099] [2022-11-03 02:22:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:10,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:10,359 INFO L87 Difference]: Start difference. First operand 46511 states and 66538 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 02:22:13,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:15,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:20,915 INFO L93 Difference]: Finished difference Result 113030 states and 160766 transitions. [2022-11-03 02:22:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 392 [2022-11-03 02:22:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:21,441 INFO L225 Difference]: With dead ends: 113030 [2022-11-03 02:22:21,441 INFO L226 Difference]: Without dead ends: 66542 [2022-11-03 02:22:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:21,614 INFO L413 NwaCegarLoop]: 3531 mSDtfsCounter, 2395 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:21,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 6254 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 756 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:22:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66542 states. [2022-11-03 02:22:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66542 to 66433. [2022-11-03 02:22:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66433 states, 41591 states have (on average 1.3000649178908898) internal successors, (54071), 42708 states have internal predecessors, (54071), 19665 states have call successors, (19665), 5185 states have call predecessors, (19665), 5176 states have return successors, (20378), 19271 states have call predecessors, (20378), 19664 states have call successors, (20378) [2022-11-03 02:22:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66433 states to 66433 states and 94114 transitions. [2022-11-03 02:22:25,408 INFO L78 Accepts]: Start accepts. Automaton has 66433 states and 94114 transitions. Word has length 392 [2022-11-03 02:22:25,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:25,409 INFO L495 AbstractCegarLoop]: Abstraction has 66433 states and 94114 transitions. [2022-11-03 02:22:25,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 02:22:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 66433 states and 94114 transitions. [2022-11-03 02:22:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-03 02:22:25,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:25,922 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:25,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:22:25,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1721476967, now seen corresponding path program 1 times [2022-11-03 02:22:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:25,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085776294] [2022-11-03 02:22:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-03 02:22:26,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:26,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085776294] [2022-11-03 02:22:26,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085776294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:26,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:26,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284336159] [2022-11-03 02:22:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:26,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:26,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:26,502 INFO L87 Difference]: Start difference. First operand 66433 states and 94114 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-03 02:22:32,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:38,091 INFO L93 Difference]: Finished difference Result 166226 states and 235428 transitions. [2022-11-03 02:22:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:38,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 374 [2022-11-03 02:22:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:38,606 INFO L225 Difference]: With dead ends: 166226 [2022-11-03 02:22:38,606 INFO L226 Difference]: Without dead ends: 99816 [2022-11-03 02:22:39,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:39,102 INFO L413 NwaCegarLoop]: 5111 mSDtfsCounter, 3115 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 7957 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:39,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 7957 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 874 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 02:22:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99816 states. [2022-11-03 02:22:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99816 to 99806. [2022-11-03 02:22:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99806 states, 62550 states have (on average 1.2988649080735413) internal successors, (81244), 64230 states have internal predecessors, (81244), 29469 states have call successors, (29469), 7799 states have call predecessors, (29469), 7786 states have return successors, (30426), 28876 states have call predecessors, (30426), 29468 states have call successors, (30426) [2022-11-03 02:22:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99806 states to 99806 states and 141139 transitions. [2022-11-03 02:22:43,527 INFO L78 Accepts]: Start accepts. Automaton has 99806 states and 141139 transitions. Word has length 374 [2022-11-03 02:22:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:43,527 INFO L495 AbstractCegarLoop]: Abstraction has 99806 states and 141139 transitions. [2022-11-03 02:22:43,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-03 02:22:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 99806 states and 141139 transitions. [2022-11-03 02:22:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-03 02:22:43,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:43,712 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:43,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:22:43,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 698879777, now seen corresponding path program 1 times [2022-11-03 02:22:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:43,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590887369] [2022-11-03 02:22:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-11-03 02:22:45,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590887369] [2022-11-03 02:22:45,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590887369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:45,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:45,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:22:45,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771108476] [2022-11-03 02:22:45,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:45,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:22:45,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:22:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:45,519 INFO L87 Difference]: Start difference. First operand 99806 states and 141139 transitions. Second operand has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-03 02:22:48,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:50,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:52,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:54,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:57,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:07,748 INFO L93 Difference]: Finished difference Result 200069 states and 284024 transitions. [2022-11-03 02:23:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:23:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 374 [2022-11-03 02:23:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:08,327 INFO L225 Difference]: With dead ends: 200069 [2022-11-03 02:23:08,327 INFO L226 Difference]: Without dead ends: 100286 [2022-11-03 02:23:08,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:23:08,600 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 11 mSDsluCounter, 19004 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19989 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:08,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19989 Invalid, 2417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2404 Invalid, 3 Unknown, 0 Unchecked, 18.3s Time] [2022-11-03 02:23:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100286 states. [2022-11-03 02:23:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100286 to 99986. [2022-11-03 02:23:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99986 states, 62670 states have (on average 1.2982926440082974) internal successors, (81364), 64290 states have internal predecessors, (81364), 29529 states have call successors, (29529), 7799 states have call predecessors, (29529), 7786 states have return successors, (30486), 28936 states have call predecessors, (30486), 29528 states have call successors, (30486) [2022-11-03 02:23:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99986 states to 99986 states and 141379 transitions. [2022-11-03 02:23:13,030 INFO L78 Accepts]: Start accepts. Automaton has 99986 states and 141379 transitions. Word has length 374 [2022-11-03 02:23:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:13,031 INFO L495 AbstractCegarLoop]: Abstraction has 99986 states and 141379 transitions. [2022-11-03 02:23:13,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-03 02:23:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 99986 states and 141379 transitions. [2022-11-03 02:23:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-03 02:23:13,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:13,182 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:23:13,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:13,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1937040827, now seen corresponding path program 1 times [2022-11-03 02:23:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:13,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899164424] [2022-11-03 02:23:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-03 02:23:13,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899164424] [2022-11-03 02:23:13,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899164424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:13,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:13,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873311988] [2022-11-03 02:23:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:13,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:13,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:13,766 INFO L87 Difference]: Start difference. First operand 99986 states and 141379 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 02:23:17,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:19,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:24,172 INFO L93 Difference]: Finished difference Result 141501 states and 201249 transitions. [2022-11-03 02:23:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:24,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 377 [2022-11-03 02:23:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:24,901 INFO L225 Difference]: With dead ends: 141501 [2022-11-03 02:23:24,901 INFO L226 Difference]: Without dead ends: 100094 [2022-11-03 02:23:25,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:25,081 INFO L413 NwaCegarLoop]: 2880 mSDtfsCounter, 4 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5754 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:25,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5754 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 02:23:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100094 states. [2022-11-03 02:23:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100094 to 100094. [2022-11-03 02:23:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100094 states, 62754 states have (on average 1.2978933613793544) internal successors, (81448), 64398 states have internal predecessors, (81448), 29529 states have call successors, (29529), 7799 states have call predecessors, (29529), 7810 states have return successors, (30510), 28936 states have call predecessors, (30510), 29528 states have call successors, (30510) [2022-11-03 02:23:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100094 states to 100094 states and 141487 transitions. [2022-11-03 02:23:29,313 INFO L78 Accepts]: Start accepts. Automaton has 100094 states and 141487 transitions. Word has length 377 [2022-11-03 02:23:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:29,315 INFO L495 AbstractCegarLoop]: Abstraction has 100094 states and 141487 transitions. [2022-11-03 02:23:29,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 02:23:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 100094 states and 141487 transitions. [2022-11-03 02:23:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-03 02:23:29,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:29,484 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:23:29,485 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:29,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1735746270, now seen corresponding path program 1 times [2022-11-03 02:23:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:29,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076045900] [2022-11-03 02:23:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-03 02:23:31,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:31,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076045900] [2022-11-03 02:23:31,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076045900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:31,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175358350] [2022-11-03 02:23:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:31,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:31,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:32,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b97de70-ddaa-4c8f-9129-2608cee733db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:23:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:33,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 4810 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:23:33,819 INFO L286 TraceCheckSpWp]: Computing forward predicates...