./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:37:32,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:37:32,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:37:32,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:37:32,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:37:32,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:37:32,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:37:32,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:37:32,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:37:32,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:37:32,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:37:32,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:37:32,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:37:32,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:37:32,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:37:32,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:37:32,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:37:32,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:37:32,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:37:32,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:37:32,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:37:32,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:37:32,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:37:32,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:37:32,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:37:32,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:37:32,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:37:32,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:37:32,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:37:32,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:37:32,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:37:32,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:37:32,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:37:32,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:37:32,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:37:32,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:37:32,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:37:32,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:37:32,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:37:32,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:37:32,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:37:32,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:37:32,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:37:32,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:37:32,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:37:32,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:37:32,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:37:32,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:37:32,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:37:32,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:37:32,707 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:37:32,707 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:37:32,707 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:37:32,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:37:32,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:37:32,708 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:37:32,708 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:37:32,709 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:37:32,709 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:37:32,709 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:37:32,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:37:32,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:37:32,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:37:32,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:37:32,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:37:32,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:37:32,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:37:32,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:37:32,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:37:32,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:37:32,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:37:32,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:32,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:37:32,712 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:37:32,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:37:32,714 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_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2022-11-23 14:37:32,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:37:32,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:37:32,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:37:32,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:37:32,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:37:32,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-23 14:37:36,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:37:36,708 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:37:36,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-23 14:37:36,757 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/data/c7fdd0035/f648a4263fce41989c5161eb725d1dde/FLAG67cc03df2 [2022-11-23 14:37:36,778 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/data/c7fdd0035/f648a4263fce41989c5161eb725d1dde [2022-11-23 14:37:36,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:37:36,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:37:36,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:36,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:37:36,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:37:36,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:36" (1/1) ... [2022-11-23 14:37:36,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccab8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:36, skipping insertion in model container [2022-11-23 14:37:36,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:36" (1/1) ... [2022-11-23 14:37:36,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:37:36,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:37:38,398 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2022-11-23 14:37:38,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:38,516 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:37:38,844 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2022-11-23 14:37:38,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:37:39,334 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:37:39,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39 WrapperNode [2022-11-23 14:37:39,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:37:39,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:39,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:37:39,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:37:39,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,531 INFO L138 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1682 [2022-11-23 14:37:39,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:37:39,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:37:39,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:37:39,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:37:39,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:37:39,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:37:39,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:37:39,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:37:39,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (1/1) ... [2022-11-23 14:37:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:37:39,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:39,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:37:39,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:37:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:37:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:37:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2022-11-23 14:37:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2022-11-23 14:37:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:37:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-23 14:37:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-23 14:37:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:37:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:37:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:37:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:37:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:37:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:37:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:37:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2022-11-23 14:37:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2022-11-23 14:37:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2022-11-23 14:37:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2022-11-23 14:37:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2022-11-23 14:37:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2022-11-23 14:37:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:37:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:37:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 14:37:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 14:37:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:37:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:37:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2022-11-23 14:37:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2022-11-23 14:37:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 14:37:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 14:37:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:37:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-23 14:37:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-23 14:37:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-23 14:37:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-23 14:37:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 14:37:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 14:37:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:37:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:37:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:37:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:37:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:37:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:37:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:37:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-23 14:37:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-23 14:37:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:37:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:37:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:37:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:37:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:37:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:37:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:37:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2022-11-23 14:37:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2022-11-23 14:37:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:37:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2022-11-23 14:37:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2022-11-23 14:37:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 14:37:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 14:37:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 14:37:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 14:37:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:37:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:37:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2022-11-23 14:37:39,799 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2022-11-23 14:37:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-23 14:37:39,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-23 14:37:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:37:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:37:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:37:39,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:37:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:37:39,801 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:37:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:37:39,801 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:37:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-23 14:37:39,802 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-23 14:37:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:37:39,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:37:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-23 14:37:39,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-23 14:37:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:37:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-23 14:37:39,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-23 14:37:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:37:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-23 14:37:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:37:39,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:37:40,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:37:40,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:37:41,281 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-23 14:37:41,377 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:37:41,392 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:37:42,904 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2022-11-23 14:37:42,904 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2022-11-23 14:37:42,904 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-11-23 14:37:42,904 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-11-23 14:37:42,943 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:37:43,458 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:37:43,458 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-23 14:37:43,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:43 BoogieIcfgContainer [2022-11-23 14:37:43,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:37:43,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:37:43,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:37:43,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:37:43,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:37:36" (1/3) ... [2022-11-23 14:37:43,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5868bea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:43, skipping insertion in model container [2022-11-23 14:37:43,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:39" (2/3) ... [2022-11-23 14:37:43,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5868bea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:43, skipping insertion in model container [2022-11-23 14:37:43,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:43" (3/3) ... [2022-11-23 14:37:43,480 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2022-11-23 14:37:43,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:37:43,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:37:43,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:37:43,590 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;@28b055e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:37:43,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:37:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 246 states have (on average 1.3170731707317074) internal successors, (324), 259 states have internal predecessors, (324), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) [2022-11-23 14:37:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:37:43,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:43,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:43,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 275245242, now seen corresponding path program 1 times [2022-11-23 14:37:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:43,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633054623] [2022-11-23 14:37:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:43,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:37:44,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:44,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633054623] [2022-11-23 14:37:44,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633054623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:37:44,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:37:44,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:37:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876580075] [2022-11-23 14:37:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:37:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:37:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:37:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:44,236 INFO L87 Difference]: Start difference. First operand has 405 states, 246 states have (on average 1.3170731707317074) internal successors, (324), 259 states have internal predecessors, (324), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:37:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:47,490 INFO L93 Difference]: Finished difference Result 1082 states and 1544 transitions. [2022-11-23 14:37:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:37:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-23 14:37:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:47,509 INFO L225 Difference]: With dead ends: 1082 [2022-11-23 14:37:47,509 INFO L226 Difference]: Without dead ends: 677 [2022-11-23 14:37:47,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:47,520 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 373 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 995 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:37:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-23 14:37:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 673. [2022-11-23 14:37:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 414 states have (on average 1.2584541062801933) internal successors, (521), 428 states have internal predecessors, (521), 194 states have call successors, (194), 66 states have call predecessors, (194), 64 states have return successors, (191), 187 states have call predecessors, (191), 191 states have call successors, (191) [2022-11-23 14:37:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 906 transitions. [2022-11-23 14:37:47,728 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 906 transitions. Word has length 10 [2022-11-23 14:37:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:47,730 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 906 transitions. [2022-11-23 14:37:47,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:37:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 906 transitions. [2022-11-23 14:37:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:37:47,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:47,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:47,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:37:47,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -57591555, now seen corresponding path program 1 times [2022-11-23 14:37:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:47,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898828499] [2022-11-23 14:37:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:37:47,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:47,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898828499] [2022-11-23 14:37:47,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898828499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:37:47,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:37:47,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:37:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459591600] [2022-11-23 14:37:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:37:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:37:47,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:47,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:37:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:47,958 INFO L87 Difference]: Start difference. First operand 673 states and 906 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:37:49,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:37:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:50,761 INFO L93 Difference]: Finished difference Result 675 states and 907 transitions. [2022-11-23 14:37:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:37:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 14:37:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:50,768 INFO L225 Difference]: With dead ends: 675 [2022-11-23 14:37:50,768 INFO L226 Difference]: Without dead ends: 666 [2022-11-23 14:37:50,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:50,770 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 535 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:50,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 462 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 14:37:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-23 14:37:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-11-23 14:37:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 410 states have (on average 1.2463414634146341) internal successors, (511), 422 states have internal predecessors, (511), 192 states have call successors, (192), 65 states have call predecessors, (192), 63 states have return successors, (190), 186 states have call predecessors, (190), 190 states have call successors, (190) [2022-11-23 14:37:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 893 transitions. [2022-11-23 14:37:50,868 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 893 transitions. Word has length 11 [2022-11-23 14:37:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:50,868 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 893 transitions. [2022-11-23 14:37:50,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:37:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 893 transitions. [2022-11-23 14:37:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:37:50,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:50,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:37:50,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1647487605, now seen corresponding path program 1 times [2022-11-23 14:37:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:50,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591554567] [2022-11-23 14:37:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:37:51,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591554567] [2022-11-23 14:37:51,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591554567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:37:51,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:37:51,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:37:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862667654] [2022-11-23 14:37:51,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:37:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:37:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:37:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:51,241 INFO L87 Difference]: Start difference. First operand 666 states and 893 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:37:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:53,808 INFO L93 Difference]: Finished difference Result 1578 states and 2178 transitions. [2022-11-23 14:37:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:37:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-23 14:37:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:53,816 INFO L225 Difference]: With dead ends: 1578 [2022-11-23 14:37:53,816 INFO L226 Difference]: Without dead ends: 917 [2022-11-23 14:37:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:53,821 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 185 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 908 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 14:37:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-23 14:37:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 913. [2022-11-23 14:37:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 575 states have (on average 1.2747826086956522) internal successors, (733), 595 states have internal predecessors, (733), 274 states have call successors, (274), 65 states have call predecessors, (274), 63 states have return successors, (272), 266 states have call predecessors, (272), 272 states have call successors, (272) [2022-11-23 14:37:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1279 transitions. [2022-11-23 14:37:53,905 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1279 transitions. Word has length 35 [2022-11-23 14:37:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:53,907 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1279 transitions. [2022-11-23 14:37:53,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:37:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1279 transitions. [2022-11-23 14:37:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 14:37:53,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:53,918 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:37:53,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:37:53,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2000378301, now seen corresponding path program 1 times [2022-11-23 14:37:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:53,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936824775] [2022-11-23 14:37:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:37:54,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936824775] [2022-11-23 14:37:54,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936824775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:37:54,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:37:54,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:37:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468273973] [2022-11-23 14:37:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:37:54,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:37:54,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:37:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:37:54,200 INFO L87 Difference]: Start difference. First operand 913 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:37:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:59,598 INFO L93 Difference]: Finished difference Result 1685 states and 2339 transitions. [2022-11-23 14:37:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:37:59,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2022-11-23 14:37:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:59,604 INFO L225 Difference]: With dead ends: 1685 [2022-11-23 14:37:59,605 INFO L226 Difference]: Without dead ends: 773 [2022-11-23 14:37:59,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:37:59,609 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 11 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:59,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1371 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:37:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-23 14:37:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 765. [2022-11-23 14:37:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 477 states have (on average 1.259958071278826) internal successors, (601), 493 states have internal predecessors, (601), 226 states have call successors, (226), 63 states have call predecessors, (226), 61 states have return successors, (224), 219 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-23 14:37:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1051 transitions. [2022-11-23 14:37:59,657 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1051 transitions. Word has length 53 [2022-11-23 14:37:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:59,657 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1051 transitions. [2022-11-23 14:37:59,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:37:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1051 transitions. [2022-11-23 14:37:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-23 14:37:59,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:59,660 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-23 14:37:59,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:37:59,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:59,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -817177854, now seen corresponding path program 1 times [2022-11-23 14:37:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:59,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722956847] [2022-11-23 14:37:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-23 14:38:00,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:00,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722956847] [2022-11-23 14:38:00,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722956847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:00,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:00,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:38:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616108081] [2022-11-23 14:38:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:38:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:38:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:38:00,646 INFO L87 Difference]: Start difference. First operand 765 states and 1051 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-23 14:38:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:38:09,677 INFO L93 Difference]: Finished difference Result 805 states and 1106 transitions. [2022-11-23 14:38:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:38:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2022-11-23 14:38:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:38:09,683 INFO L225 Difference]: With dead ends: 805 [2022-11-23 14:38:09,683 INFO L226 Difference]: Without dead ends: 767 [2022-11-23 14:38:09,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:38:09,685 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 4 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:38:09,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2564 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 14:38:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-23 14:38:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2022-11-23 14:38:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 477 states have (on average 1.2578616352201257) internal successors, (600), 493 states have internal predecessors, (600), 226 states have call successors, (226), 63 states have call predecessors, (226), 61 states have return successors, (224), 219 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-23 14:38:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1050 transitions. [2022-11-23 14:38:09,731 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1050 transitions. Word has length 109 [2022-11-23 14:38:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:09,732 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1050 transitions. [2022-11-23 14:38:09,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-23 14:38:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1050 transitions. [2022-11-23 14:38:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 14:38:09,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:09,735 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-23 14:38:09,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:38:09,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:09,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash -96327092, now seen corresponding path program 1 times [2022-11-23 14:38:09,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:09,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556867346] [2022-11-23 14:38:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:09,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-23 14:38:14,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556867346] [2022-11-23 14:38:14,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556867346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:38:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160899705] [2022-11-23 14:38:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:14,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:14,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082098f3-b558-43cc-b7a4-07670fbb8753/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:38:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:14,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-23 14:38:14,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:15,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:38:15,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:38:15,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2022-11-23 14:38:15,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-23 14:38:16,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 14:38:16,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 79 [2022-11-23 14:38:16,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 85 [2022-11-23 14:38:17,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 14:38:18,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-11-23 14:38:18,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:38:18,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 224 treesize of output 220 [2022-11-23 14:38:19,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 199 [2022-11-23 14:38:19,434 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:38:19,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 211 treesize of output 115 [2022-11-23 14:38:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:38:19,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:38:21,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 14:38:22,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 14:38:22,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160899705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:38:22,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302500667] [2022-11-23 14:38:22,637 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-23 14:38:22,638 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:38:22,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:38:22,648 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:38:22,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:38:23,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 121 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 61 [2022-11-23 14:38:24,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1774 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 266 [2022-11-23 14:38:24,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1055 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 201 [2022-11-23 14:38:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:42,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:42,298 INFO L217 Elim1Store]: Index analysis took 132 ms [2022-11-23 14:38:45,161 INFO L321 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-23 14:38:45,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-23 14:38:45,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:45,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 530 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 259 [2022-11-23 14:38:49,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:38:49,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 14:38:52,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-23 14:38:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:52,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-23 14:38:56,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:56,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-23 14:38:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:38:57,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-23 14:42:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:05,196 INFO L321 Elim1Store]: treesize reduction 147, result has 36.6 percent of original size [2022-11-23 14:42:05,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 101 [2022-11-23 14:42:05,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:05,397 INFO L321 Elim1Store]: treesize reduction 159, result has 34.8 percent of original size [2022-11-23 14:42:05,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 94 [2022-11-23 14:42:05,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:42:05,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:42:05,551 INFO L321 Elim1Store]: treesize reduction 165, result has 28.9 percent of original size [2022-11-23 14:42:05,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 83 [2022-11-23 14:42:07,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-23 14:42:07,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-23 14:42:07,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2022-11-23 14:42:08,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 14:42:08,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:08,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:09,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 14:42:09,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:09,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:09,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 14:42:09,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:09,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:10,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:10,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:10,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 14:43:31,290 INFO L197 IcfgInterpreter]: Interpreting procedure usb_free_urb with input of size 118 for LOIs [2022-11-23 14:43:31,673 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 125 for LOIs [2022-11-23 14:43:31,738 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 85 for LOIs [2022-11-23 14:43:31,750 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 116 for LOIs [2022-11-23 14:43:31,846 INFO L197 IcfgInterpreter]: Interpreting procedure catc_init with input of size 1462 for LOIs [2022-11-23 14:43:33,288 INFO L197 IcfgInterpreter]: Interpreting procedure usb_alloc_urb with input of size 135 for LOIs [2022-11-23 14:43:34,852 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undefined_pointer with input of size 119 for LOIs [2022-11-23 14:43:35,449 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 86 for LOIs [2022-11-23 14:43:35,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:43:35,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 14:43:35,512 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_priv with input of size 1401 for LOIs [2022-11-23 14:43:40,726 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:44:02,365 WARN L233 SmtUtils]: Spent 15.70s on a formula simplification that was a NOOP. DAG size: 1462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:37,968 WARN L233 SmtUtils]: Spent 33.85s on a formula simplification. DAG size of input: 1515 DAG size of output: 1512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:44:54,941 WARN L233 SmtUtils]: Spent 15.64s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:45:11,988 WARN L233 SmtUtils]: Spent 15.70s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:45:29,103 WARN L233 SmtUtils]: Spent 15.73s on a formula simplification that was a NOOP. DAG size: 1468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:45:46,291 WARN L233 SmtUtils]: Spent 15.74s on a formula simplification that was a NOOP. DAG size: 1474 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:03,848 WARN L233 SmtUtils]: Spent 15.76s on a formula simplification that was a NOOP. DAG size: 1476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:21,409 WARN L233 SmtUtils]: Spent 15.86s on a formula simplification that was a NOOP. DAG size: 1480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:38,885 WARN L233 SmtUtils]: Spent 15.92s on a formula simplification that was a NOOP. DAG size: 1482 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:56,529 WARN L233 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 1484 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:14,302 WARN L233 SmtUtils]: Spent 16.13s on a formula simplification that was a NOOP. DAG size: 1486 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:32,161 WARN L233 SmtUtils]: Spent 16.12s on a formula simplification that was a NOOP. DAG size: 1488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:50,180 WARN L233 SmtUtils]: Spent 16.14s on a formula simplification that was a NOOP. DAG size: 1490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:08,194 WARN L233 SmtUtils]: Spent 16.21s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:26,323 WARN L233 SmtUtils]: Spent 16.27s on a formula simplification that was a NOOP. DAG size: 1494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:43,991 WARN L233 SmtUtils]: Spent 15.80s on a formula simplification that was a NOOP. DAG size: 1478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:28,214 WARN L233 SmtUtils]: Spent 41.94s on a formula simplification. DAG size of input: 1705 DAG size of output: 1576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:50:13,199 WARN L233 SmtUtils]: Spent 42.60s on a formula simplification. DAG size of input: 1716 DAG size of output: 1587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)