./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/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_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:55:22,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:55:22,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:55:22,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:55:22,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:55:22,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:55:22,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:55:22,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:55:22,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:55:22,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:55:22,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:55:22,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:55:22,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:55:22,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:55:22,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:55:22,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:55:22,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:55:22,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:55:22,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:55:22,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:55:22,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:55:22,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:55:22,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:55:22,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:55:22,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:55:22,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:55:22,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:55:22,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:55:22,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:55:22,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:55:22,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:55:22,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:55:22,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:55:22,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:55:22,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:55:22,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:55:22,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:55:22,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:55:22,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:55:22,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:55:22,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:55:22,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:55:22,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:55:22,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:55:22,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:55:22,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:55:22,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:55:22,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:55:22,307 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:55:22,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:55:22,307 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:55:22,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:55:22,308 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:55:22,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:55:22,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:55:22,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:55:22,309 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:55:22,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:55:22,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:55:22,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:55:22,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:55:22,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:55:22,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:55:22,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:55:22,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:55:22,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:55:22,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:55:22,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:55:22,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:55:22,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:55:22,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:55:22,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:55:22,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:55:22,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:55:22,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:55:22,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-11-25 19:55:22,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:55:22,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:55:22,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:55:22,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:55:22,617 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:55:22,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-25 19:55:22,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/data/692158554/9fb86bf980db4cf4be25719ef98c4cf3/FLAG7bc32fbba [2021-11-25 19:55:23,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:55:23,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-25 19:55:23,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/data/692158554/9fb86bf980db4cf4be25719ef98c4cf3/FLAG7bc32fbba [2021-11-25 19:55:23,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/data/692158554/9fb86bf980db4cf4be25719ef98c4cf3 [2021-11-25 19:55:23,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:55:23,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:55:23,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:55:23,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:55:23,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:55:23,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:55:23" (1/1) ... [2021-11-25 19:55:23,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60affa52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:23, skipping insertion in model container [2021-11-25 19:55:23,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:55:23" (1/1) ... [2021-11-25 19:55:23,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:55:23,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:55:24,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-25 19:55:24,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:55:24,925 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:55:25,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-11-25 19:55:25,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:55:25,559 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:55:25,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25 WrapperNode [2021-11-25 19:55:25,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:55:25,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:55:25,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:55:25,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:55:25,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,753 INFO L137 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1657 [2021-11-25 19:55:25,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:55:25,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:55:25,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:55:25,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:55:25,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:55:25,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:55:25,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:55:25,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:55:25,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (1/1) ... [2021-11-25 19:55:25,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:55:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:55:25,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:55:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:55:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:55:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:55:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2021-11-25 19:55:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-25 19:55:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:55:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:55:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:55:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:55:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:55:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2021-11-25 19:55:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2021-11-25 19:55:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2021-11-25 19:55:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2021-11-25 19:55:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2021-11-25 19:55:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2021-11-25 19:55:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:55:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:55:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 19:55:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 19:55:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:55:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:55:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2021-11-25 19:55:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2021-11-25 19:55:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 19:55:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 19:55:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:55:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-25 19:55:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-25 19:55:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-11-25 19:55:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-11-25 19:55:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-25 19:55:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-25 19:55:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:55:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:55:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:55:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:55:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:55:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:55:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:55:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 19:55:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 19:55:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:55:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:55:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:55:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:55:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:55:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:55:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:55:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2021-11-25 19:55:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2021-11-25 19:55:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:55:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2021-11-25 19:55:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2021-11-25 19:55:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 19:55:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 19:55:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 19:55:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 19:55:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:55:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:55:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2021-11-25 19:55:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2021-11-25 19:55:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-25 19:55:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-25 19:55:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:55:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:55:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 19:55:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 19:55:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:55:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:55:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:55:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:55:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 19:55:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 19:55:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:55:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:55:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-11-25 19:55:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-11-25 19:55:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:55:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-25 19:55:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-25 19:55:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:55:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 19:55:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:55:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:55:26,495 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:55:26,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:55:27,233 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-11-25 19:55:27,305 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:55:27,319 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:55:28,387 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-11-25 19:55:28,387 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-11-25 19:55:28,387 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-11-25 19:55:28,387 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-11-25 19:55:28,413 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:55:28,796 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:55:28,796 INFO L301 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-25 19:55:28,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:55:28 BoogieIcfgContainer [2021-11-25 19:55:28,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:55:28,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:55:28,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:55:28,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:55:28,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:55:23" (1/3) ... [2021-11-25 19:55:28,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f2b3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:55:28, skipping insertion in model container [2021-11-25 19:55:28,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:25" (2/3) ... [2021-11-25 19:55:28,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f2b3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:55:28, skipping insertion in model container [2021-11-25 19:55:28,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:55:28" (3/3) ... [2021-11-25 19:55:28,811 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-11-25 19:55:28,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:55:28,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:55:28,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:55:28,905 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:55:28,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:55:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 245 states have (on average 1.3142857142857143) internal successors, (322), 258 states have internal predecessors, (322), 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) [2021-11-25 19:55:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:55:28,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:28,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:55:28,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1823962436, now seen corresponding path program 1 times [2021-11-25 19:55:28,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756100818] [2021-11-25 19:55:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:28,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:55:29,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:29,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756100818] [2021-11-25 19:55:29,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756100818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:29,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:55:29,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:55:29,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635787207] [2021-11-25 19:55:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:29,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:55:29,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:55:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:29,583 INFO L87 Difference]: Start difference. First operand has 404 states, 245 states have (on average 1.3142857142857143) internal successors, (322), 258 states have internal predecessors, (322), 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) [2021-11-25 19:55:30,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:32,910 INFO L93 Difference]: Finished difference Result 1079 states and 1538 transitions. [2021-11-25 19:55:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:55:32,913 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 [2021-11-25 19:55:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:32,933 INFO L225 Difference]: With dead ends: 1079 [2021-11-25 19:55:32,933 INFO L226 Difference]: Without dead ends: 675 [2021-11-25 19:55:32,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:32,944 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 371 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:32,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 995 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 19:55:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-25 19:55:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2021-11-25 19:55:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 412 states have (on average 1.2548543689320388) internal successors, (517), 426 states have internal predecessors, (517), 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) [2021-11-25 19:55:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 902 transitions. [2021-11-25 19:55:33,094 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 902 transitions. Word has length 10 [2021-11-25 19:55:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 902 transitions. [2021-11-25 19:55:33,095 INFO L471 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) [2021-11-25 19:55:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 902 transitions. [2021-11-25 19:55:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:55:33,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:33,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:55:33,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:55:33,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 708001173, now seen corresponding path program 1 times [2021-11-25 19:55:33,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:33,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941895615] [2021-11-25 19:55:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:33,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:55:33,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:33,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941895615] [2021-11-25 19:55:33,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941895615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:33,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:55:33,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:55:33,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527586951] [2021-11-25 19:55:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:33,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:55:33,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:55:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:33,218 INFO L87 Difference]: Start difference. First operand 671 states and 902 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) [2021-11-25 19:55:34,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:35,244 INFO L93 Difference]: Finished difference Result 673 states and 903 transitions. [2021-11-25 19:55:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:55:35,245 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 [2021-11-25 19:55:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:35,251 INFO L225 Difference]: With dead ends: 673 [2021-11-25 19:55:35,251 INFO L226 Difference]: Without dead ends: 664 [2021-11-25 19:55:35,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:35,254 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 533 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:35,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 462 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 19:55:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-25 19:55:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-25 19:55:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 408 states have (on average 1.2426470588235294) internal successors, (507), 420 states have internal predecessors, (507), 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) [2021-11-25 19:55:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 889 transitions. [2021-11-25 19:55:35,301 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 889 transitions. Word has length 11 [2021-11-25 19:55:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:35,302 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 889 transitions. [2021-11-25 19:55:35,302 INFO L471 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) [2021-11-25 19:55:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 889 transitions. [2021-11-25 19:55:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:55:35,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:35,305 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:55:35,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:55:35,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1131503975, now seen corresponding path program 1 times [2021-11-25 19:55:35,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:35,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585481432] [2021-11-25 19:55:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:35,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:55:35,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:35,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585481432] [2021-11-25 19:55:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585481432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:35,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:55:35,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:55:35,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043695098] [2021-11-25 19:55:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:55:35,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:55:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:35,438 INFO L87 Difference]: Start difference. First operand 664 states and 889 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) [2021-11-25 19:55:38,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:38,771 INFO L93 Difference]: Finished difference Result 1574 states and 2170 transitions. [2021-11-25 19:55:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:55:38,772 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 [2021-11-25 19:55:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:38,781 INFO L225 Difference]: With dead ends: 1574 [2021-11-25 19:55:38,781 INFO L226 Difference]: Without dead ends: 915 [2021-11-25 19:55:38,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:55:38,785 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 185 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:38,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 879 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 19:55:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-25 19:55:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 911. [2021-11-25 19:55:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 573 states have (on average 1.2722513089005236) internal successors, (729), 593 states have internal predecessors, (729), 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) [2021-11-25 19:55:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1275 transitions. [2021-11-25 19:55:38,859 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1275 transitions. Word has length 35 [2021-11-25 19:55:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:38,860 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1275 transitions. [2021-11-25 19:55:38,860 INFO L471 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) [2021-11-25 19:55:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1275 transitions. [2021-11-25 19:55:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 19:55:38,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:38,866 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:55:38,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:55:38,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:38,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash 924748555, now seen corresponding path program 1 times [2021-11-25 19:55:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:38,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336464333] [2021-11-25 19:55:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:38,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:55:39,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336464333] [2021-11-25 19:55:39,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336464333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:39,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:55:39,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:55:39,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130351697] [2021-11-25 19:55:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:39,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:55:39,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:55:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:55:39,057 INFO L87 Difference]: Start difference. First operand 911 states and 1275 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) [2021-11-25 19:55:40,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:44,266 INFO L93 Difference]: Finished difference Result 1681 states and 2331 transitions. [2021-11-25 19:55:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:55:44,267 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 [2021-11-25 19:55:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:44,274 INFO L225 Difference]: With dead ends: 1681 [2021-11-25 19:55:44,274 INFO L226 Difference]: Without dead ends: 771 [2021-11-25 19:55:44,278 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:55:44,279 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 11 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:44,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1371 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 19:55:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-25 19:55:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 763. [2021-11-25 19:55:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 475 states have (on average 1.256842105263158) internal successors, (597), 491 states have internal predecessors, (597), 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) [2021-11-25 19:55:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1047 transitions. [2021-11-25 19:55:44,328 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1047 transitions. Word has length 53 [2021-11-25 19:55:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:44,329 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1047 transitions. [2021-11-25 19:55:44,329 INFO L471 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) [2021-11-25 19:55:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1047 transitions. [2021-11-25 19:55:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-25 19:55:44,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:44,334 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:55:44,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:55:44,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1617761461, now seen corresponding path program 1 times [2021-11-25 19:55:44,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:44,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315396930] [2021-11-25 19:55:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:44,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-25 19:55:44,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:44,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315396930] [2021-11-25 19:55:44,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315396930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:44,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:55:44,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:55:44,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355751667] [2021-11-25 19:55:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:44,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:55:44,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:55:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:55:44,612 INFO L87 Difference]: Start difference. First operand 763 states and 1047 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) [2021-11-25 19:55:46,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:49,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:50,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:55:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:55,773 INFO L93 Difference]: Finished difference Result 803 states and 1102 transitions. [2021-11-25 19:55:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:55:55,774 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 [2021-11-25 19:55:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:55,780 INFO L225 Difference]: With dead ends: 803 [2021-11-25 19:55:55,780 INFO L226 Difference]: Without dead ends: 765 [2021-11-25 19:55:55,781 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:55:55,782 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 4 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:55,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2624 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2021-11-25 19:55:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-25 19:55:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 763. [2021-11-25 19:55:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 475 states have (on average 1.2547368421052632) internal successors, (596), 491 states have internal predecessors, (596), 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) [2021-11-25 19:55:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1046 transitions. [2021-11-25 19:55:55,833 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1046 transitions. Word has length 109 [2021-11-25 19:55:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:55,834 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1046 transitions. [2021-11-25 19:55:55,834 INFO L471 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) [2021-11-25 19:55:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1046 transitions. [2021-11-25 19:55:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 19:55:55,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:55,839 INFO L514 BasicCegarLoop]: 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] [2021-11-25 19:55:55,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:55:55,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 855384837, now seen corresponding path program 1 times [2021-11-25 19:55:55,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401085174] [2021-11-25 19:55:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:55,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:55:56,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:56,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401085174] [2021-11-25 19:55:56,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401085174] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:55:56,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559995262] [2021-11-25 19:55:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:56,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:55:56,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:55:56,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:55:56,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad193f2a-1eea-446b-abaf-5a6db34e5104/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:55:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:57,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-25 19:55:57,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:55:57,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:55:57,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:55:57,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:57,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 39 [2021-11-25 19:55:57,974 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 19:55:57,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 40 treesize of output 39 [2021-11-25 19:55:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:58,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 73 treesize of output 66 [2021-11-25 19:55:58,322 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 19:55:58,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 79 treesize of output 72 [2021-11-25 19:55:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:58,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 139 treesize of output 129 [2021-11-25 19:55:58,942 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-25 19:55:58,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 157 treesize of output 147 [2021-11-25 19:55:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 180 treesize of output 126 [2021-11-25 19:55:59,690 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-25 19:55:59,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 138 treesize of output 84 [2021-11-25 19:55:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:55:59,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:56:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559995262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1124019858] [2021-11-25 19:56:00,794 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2021-11-25 19:56:00,794 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:56:00,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:56:00,804 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:56:00,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:56:02,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:56:02,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:56:02,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:56:17,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:17,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:17,175 INFO L244 Elim1Store]: Index analysis took 170 ms [2021-11-25 19:56:19,768 INFO L354 Elim1Store]: treesize reduction 1200, result has 25.4 percent of original size [2021-11-25 19:56:19,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 532 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 96 case distinctions, treesize of input 189 treesize of output 533 [2021-11-25 19:56:20,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:20,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:20,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 32 select indices, 32 select index equivalence classes, 563 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 267 [2021-11-25 19:56:23,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-25 19:56:23,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:56:25,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 563 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 [2021-11-25 19:56:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2021-11-25 19:56:28,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:28,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:28,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2021-11-25 19:56:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:29,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:29,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 563 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 [2021-11-25 19:58:51,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:51,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,433 INFO L354 Elim1Store]: treesize reduction 177, result has 27.5 percent of original size [2021-11-25 19:58:51,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,588 INFO L354 Elim1Store]: treesize reduction 159, result has 34.8 percent of original size [2021-11-25 19:58:51,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:51,744 INFO L354 Elim1Store]: treesize reduction 171, result has 33.2 percent of original size [2021-11-25 19:58:51,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:53,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:53,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:53,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:53,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:53,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:54,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:54,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:54,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:55,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:55,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:55,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:58:56,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:59:59,004 INFO L197 IcfgInterpreter]: Interpreting procedure usb_free_urb with input of size 116 for LOIs [2021-11-25 19:59:59,346 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 116 for LOIs [2021-11-25 19:59:59,402 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 85 for LOIs [2021-11-25 19:59:59,418 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 116 for LOIs [2021-11-25 19:59:59,502 INFO L197 IcfgInterpreter]: Interpreting procedure catc_init with input of size 1466 for LOIs [2021-11-25 20:00:00,339 INFO L197 IcfgInterpreter]: Interpreting procedure usb_alloc_urb with input of size 133 for LOIs [2021-11-25 20:00:01,680 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undefined_pointer with input of size 117 for LOIs [2021-11-25 20:00:02,362 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 86 for LOIs [2021-11-25 20:00:02,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 20:00:02,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2021-11-25 20:00:02,420 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_priv with input of size 1401 for LOIs [2021-11-25 20:00:06,016 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:00:19,303 WARN L227 SmtUtils]: Spent 12.53s on a formula simplification that was a NOOP. DAG size: 1466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:46,878 WARN L227 SmtUtils]: Spent 26.96s on a formula simplification. DAG size of input: 1519 DAG size of output: 1516 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:00,121 WARN L227 SmtUtils]: Spent 12.60s on a formula simplification that was a NOOP. DAG size: 1472 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:13,391 WARN L227 SmtUtils]: Spent 12.60s on a formula simplification that was a NOOP. DAG size: 1472 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:26,717 WARN L227 SmtUtils]: Spent 12.61s on a formula simplification that was a NOOP. DAG size: 1472 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:40,223 WARN L227 SmtUtils]: Spent 12.69s on a formula simplification that was a NOOP. DAG size: 1478 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:53,791 WARN L227 SmtUtils]: Spent 12.77s on a formula simplification that was a NOOP. DAG size: 1480 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:07,367 WARN L227 SmtUtils]: Spent 12.78s on a formula simplification that was a NOOP. DAG size: 1484 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:21,112 WARN L227 SmtUtils]: Spent 12.87s on a formula simplification that was a NOOP. DAG size: 1486 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:34,934 WARN L227 SmtUtils]: Spent 12.92s on a formula simplification that was a NOOP. DAG size: 1488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:48,861 WARN L227 SmtUtils]: Spent 12.98s on a formula simplification that was a NOOP. DAG size: 1490 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:02,905 WARN L227 SmtUtils]: Spent 13.05s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:17,188 WARN L227 SmtUtils]: Spent 13.21s on a formula simplification that was a NOOP. DAG size: 1494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:31,403 WARN L227 SmtUtils]: Spent 13.13s on a formula simplification that was a NOOP. DAG size: 1496 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:45,713 WARN L227 SmtUtils]: Spent 13.20s on a formula simplification that was a NOOP. DAG size: 1498 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:59,643 WARN L227 SmtUtils]: Spent 12.80s on a formula simplification that was a NOOP. DAG size: 1482 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:04:36,618 WARN L227 SmtUtils]: Spent 35.57s on a formula simplification. DAG size of input: 1710 DAG size of output: 1580 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:05:14,237 WARN L227 SmtUtils]: Spent 36.12s on a formula simplification. DAG size of input: 1724 DAG size of output: 1591 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:06:58,399 WARN L227 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 1683 DAG size of output: 1589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)