./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:20:56,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:20:56,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:20:56,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:20:56,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:20:56,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:20:56,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:20:56,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:20:56,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:20:56,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:20:56,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:20:56,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:20:56,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:20:56,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:20:56,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:20:56,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:20:56,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:20:56,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:20:56,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:20:56,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:20:56,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:20:56,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:20:56,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:20:56,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:20:56,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:20:56,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:20:56,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:20:56,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:20:56,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:20:56,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:20:56,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:20:56,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:20:56,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:20:56,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:20:56,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:20:56,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:20:56,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:20:56,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:20:56,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:20:56,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:20:56,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:20:56,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:20:56,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:20:56,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:20:56,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:20:56,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:20:56,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:20:56,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:20:56,316 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:20:56,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:20:56,316 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:20:56,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:20:56,317 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:20:56,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:20:56,318 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:20:56,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:20:56,318 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:20:56,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:20:56,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:20:56,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:20:56,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:20:56,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:20:56,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:20:56,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:20:56,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:20:56,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:20:56,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:20:56,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:20:56,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:20:56,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:20:56,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:20:56,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:56,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:20:56,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:20:56,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:20:56,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:20:56,324 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:20:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:20:56,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:20:56,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:20:56,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 [2022-11-22 01:20:56,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:20:56,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:20:56,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:20:56,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:20:56,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:20:56,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-22 01:20:59,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:21:00,170 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:21:00,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-22 01:21:00,206 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/data/e6a513364/5bec28a05a454efb859fc138fe44c11e/FLAGc1be62a07 [2022-11-22 01:21:00,222 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/data/e6a513364/5bec28a05a454efb859fc138fe44c11e [2022-11-22 01:21:00,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:21:00,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:21:00,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:21:00,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:21:00,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:21:00,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:21:00" (1/1) ... [2022-11-22 01:21:00,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748b7aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:00, skipping insertion in model container [2022-11-22 01:21:00,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:21:00" (1/1) ... [2022-11-22 01:21:00,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:21:00,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:21:01,615 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i[222523,222536] [2022-11-22 01:21:01,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:21:01,719 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:21:02,189 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i[222523,222536] [2022-11-22 01:21:02,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:21:02,235 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:21:02,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02 WrapperNode [2022-11-22 01:21:02,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:21:02,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:21:02,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:21:02,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:21:02,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,350 INFO L138 Inliner]: procedures = 127, calls = 982, calls flagged for inlining = 54, calls inlined = 42, statements flattened = 864 [2022-11-22 01:21:02,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:21:02,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:21:02,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:21:02,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:21:02,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:21:02,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:21:02,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:21:02,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:21:02,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (1/1) ... [2022-11-22 01:21:02,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:21:02,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:02,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:21:02,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:21:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:21:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:21:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_exit [2022-11-22 01:21:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_exit [2022-11-22 01:21:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-22 01:21:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-22 01:21:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:21:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-22 01:21:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-22 01:21:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:21:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:21:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_exit [2022-11-22 01:21:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_exit [2022-11-22 01:21:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:21:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:21:02,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:21:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:21:02,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:21:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_kfree [2022-11-22 01:21:02,542 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_kfree [2022-11-22 01:21:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:21:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:21:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:21:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:21:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_transfer_exit [2022-11-22 01:21:02,544 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_transfer_exit [2022-11-22 01:21:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:21:02,545 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-22 01:21:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-22 01:21:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:21:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:21:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:21:03,123 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:21:03,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:21:04,966 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:21:05,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:21:05,524 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:21:05,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:21:05 BoogieIcfgContainer [2022-11-22 01:21:05,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:21:05,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:21:05,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:21:05,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:21:05,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:21:00" (1/3) ... [2022-11-22 01:21:05,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf7451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:21:05, skipping insertion in model container [2022-11-22 01:21:05,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:02" (2/3) ... [2022-11-22 01:21:05,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf7451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:21:05, skipping insertion in model container [2022-11-22 01:21:05,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:21:05" (3/3) ... [2022-11-22 01:21:05,541 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-22 01:21:05,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:21:05,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:21:05,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:21:05,653 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@295ac78b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:21:05,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:21:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 74 states have (on average 1.472972972972973) internal successors, (109), 80 states have internal predecessors, (109), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-22 01:21:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:21:05,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:05,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:05,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2035234533, now seen corresponding path program 1 times [2022-11-22 01:21:05,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:05,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108859354] [2022-11-22 01:21:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:05,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:06,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:06,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108859354] [2022-11-22 01:21:06,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108859354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141265979] [2022-11-22 01:21:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:06,522 INFO L87 Difference]: Start difference. First operand has 111 states, 74 states have (on average 1.472972972972973) internal successors, (109), 80 states have internal predecessors, (109), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:08,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:08,948 INFO L93 Difference]: Finished difference Result 280 states and 393 transitions. [2022-11-22 01:21:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 01:21:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:08,975 INFO L225 Difference]: With dead ends: 280 [2022-11-22 01:21:08,975 INFO L226 Difference]: Without dead ends: 166 [2022-11-22 01:21:08,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:08,987 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:08,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 235 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:21:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-22 01:21:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-22 01:21:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 115 states have internal predecessors, (155), 36 states have call successors, (36), 19 states have call predecessors, (36), 18 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-22 01:21:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 224 transitions. [2022-11-22 01:21:09,097 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 224 transitions. Word has length 11 [2022-11-22 01:21:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:09,097 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 224 transitions. [2022-11-22 01:21:09,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 224 transitions. [2022-11-22 01:21:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:21:09,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:09,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:21:09,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash 440737709, now seen corresponding path program 1 times [2022-11-22 01:21:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:09,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428103473] [2022-11-22 01:21:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:09,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428103473] [2022-11-22 01:21:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428103473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:09,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857383450] [2022-11-22 01:21:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:09,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:09,349 INFO L87 Difference]: Start difference. First operand 166 states and 224 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:11,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:11,657 INFO L93 Difference]: Finished difference Result 233 states and 310 transitions. [2022-11-22 01:21:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:21:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:11,660 INFO L225 Difference]: With dead ends: 233 [2022-11-22 01:21:11,661 INFO L226 Difference]: Without dead ends: 230 [2022-11-22 01:21:11,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,663 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:11,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 228 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:21:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-22 01:21:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2022-11-22 01:21:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.392156862745098) internal successors, (213), 157 states have internal predecessors, (213), 48 states have call successors, (48), 27 states have call predecessors, (48), 26 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-22 01:21:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 306 transitions. [2022-11-22 01:21:11,695 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 306 transitions. Word has length 13 [2022-11-22 01:21:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:11,695 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 306 transitions. [2022-11-22 01:21:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:11,696 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 306 transitions. [2022-11-22 01:21:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:21:11,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:11,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:21:11,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 777865434, now seen corresponding path program 1 times [2022-11-22 01:21:11,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969446613] [2022-11-22 01:21:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:11,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:11,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969446613] [2022-11-22 01:21:11,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969446613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:11,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:11,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66544600] [2022-11-22 01:21:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:11,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:11,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,944 INFO L87 Difference]: Start difference. First operand 228 states and 306 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:13,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:14,208 INFO L93 Difference]: Finished difference Result 234 states and 311 transitions. [2022-11-22 01:21:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 01:21:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:14,211 INFO L225 Difference]: With dead ends: 234 [2022-11-22 01:21:14,211 INFO L226 Difference]: Without dead ends: 231 [2022-11-22 01:21:14,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:14,213 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 75 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:14,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 231 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 01:21:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-22 01:21:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2022-11-22 01:21:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 154 states have (on average 1.3896103896103895) internal successors, (214), 158 states have internal predecessors, (214), 48 states have call successors, (48), 27 states have call predecessors, (48), 26 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-22 01:21:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 307 transitions. [2022-11-22 01:21:14,260 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 307 transitions. Word has length 14 [2022-11-22 01:21:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:14,262 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 307 transitions. [2022-11-22 01:21:14,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 307 transitions. [2022-11-22 01:21:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:21:14,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:14,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:14,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:21:14,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1656072112, now seen corresponding path program 1 times [2022-11-22 01:21:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:14,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901565710] [2022-11-22 01:21:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:14,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:14,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901565710] [2022-11-22 01:21:14,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901565710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:14,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:14,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435056096] [2022-11-22 01:21:14,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:14,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:14,428 INFO L87 Difference]: Start difference. First operand 229 states and 307 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:16,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:16,634 INFO L93 Difference]: Finished difference Result 233 states and 310 transitions. [2022-11-22 01:21:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:21:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:16,636 INFO L225 Difference]: With dead ends: 233 [2022-11-22 01:21:16,636 INFO L226 Difference]: Without dead ends: 226 [2022-11-22 01:21:16,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:16,638 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 71 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:16,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 235 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 01:21:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-22 01:21:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-22 01:21:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 151 states have (on average 1.3841059602649006) internal successors, (209), 155 states have internal predecessors, (209), 48 states have call successors, (48), 27 states have call predecessors, (48), 26 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-22 01:21:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 302 transitions. [2022-11-22 01:21:16,658 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 302 transitions. Word has length 15 [2022-11-22 01:21:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:16,658 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 302 transitions. [2022-11-22 01:21:16,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 302 transitions. [2022-11-22 01:21:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:21:16,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:16,661 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:21:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:21:16,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1017398270, now seen corresponding path program 1 times [2022-11-22 01:21:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:16,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562519397] [2022-11-22 01:21:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:16,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562519397] [2022-11-22 01:21:16,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562519397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:16,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:16,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700520909] [2022-11-22 01:21:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:16,803 INFO L87 Difference]: Start difference. First operand 226 states and 302 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:18,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:18,990 INFO L93 Difference]: Finished difference Result 428 states and 585 transitions. [2022-11-22 01:21:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-22 01:21:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:18,992 INFO L225 Difference]: With dead ends: 428 [2022-11-22 01:21:18,992 INFO L226 Difference]: Without dead ends: 203 [2022-11-22 01:21:18,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:18,994 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 22 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:18,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 212 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 01:21:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-22 01:21:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2022-11-22 01:21:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.4532374100719425) internal successors, (202), 143 states have internal predecessors, (202), 36 states have call successors, (36), 19 states have call predecessors, (36), 18 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-22 01:21:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 271 transitions. [2022-11-22 01:21:19,008 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 271 transitions. Word has length 29 [2022-11-22 01:21:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:19,008 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 271 transitions. [2022-11-22 01:21:19,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 271 transitions. [2022-11-22 01:21:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 01:21:19,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:19,011 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 01:21:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:21:19,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1280543086, now seen corresponding path program 1 times [2022-11-22 01:21:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:19,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31511444] [2022-11-22 01:21:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:19,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:21:19,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:19,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31511444] [2022-11-22 01:21:19,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31511444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:19,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:19,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142427034] [2022-11-22 01:21:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:19,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:19,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:19,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:19,260 INFO L87 Difference]: Start difference. First operand 194 states and 271 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:21,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:21,168 INFO L93 Difference]: Finished difference Result 196 states and 272 transitions. [2022-11-22 01:21:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:21,169 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-22 01:21:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:21,170 INFO L225 Difference]: With dead ends: 196 [2022-11-22 01:21:21,170 INFO L226 Difference]: Without dead ends: 193 [2022-11-22 01:21:21,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:21,171 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:21,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 105 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:21:21,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-22 01:21:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-11-22 01:21:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 142 states have internal predecessors, (201), 35 states have call successors, (35), 19 states have call predecessors, (35), 18 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-22 01:21:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 269 transitions. [2022-11-22 01:21:21,186 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 269 transitions. Word has length 37 [2022-11-22 01:21:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:21,187 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 269 transitions. [2022-11-22 01:21:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 269 transitions. [2022-11-22 01:21:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 01:21:21,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:21,189 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 01:21:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:21:21,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1042231659, now seen corresponding path program 1 times [2022-11-22 01:21:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462919540] [2022-11-22 01:21:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:21:21,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:21,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462919540] [2022-11-22 01:21:21,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462919540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:21,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:21,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119104997] [2022-11-22 01:21:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:21,405 INFO L87 Difference]: Start difference. First operand 193 states and 269 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:23,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:23,562 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2022-11-22 01:21:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-11-22 01:21:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:23,564 INFO L225 Difference]: With dead ends: 195 [2022-11-22 01:21:23,564 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 01:21:23,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:23,565 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:23,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 103 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 01:21:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 01:21:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-22 01:21:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 139 states have (on average 1.4388489208633093) internal successors, (200), 141 states have internal predecessors, (200), 34 states have call successors, (34), 19 states have call predecessors, (34), 18 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-22 01:21:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 267 transitions. [2022-11-22 01:21:23,587 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 267 transitions. Word has length 38 [2022-11-22 01:21:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:23,590 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 267 transitions. [2022-11-22 01:21:23,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 267 transitions. [2022-11-22 01:21:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 01:21:23,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:23,600 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 01:21:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:21:23,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:21:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2050460149, now seen corresponding path program 1 times [2022-11-22 01:21:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:23,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416737708] [2022-11-22 01:21:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:21:23,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:23,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416737708] [2022-11-22 01:21:23,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416737708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:23,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:23,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:23,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572389040] [2022-11-22 01:21:23,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:23,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:23,806 INFO L87 Difference]: Start difference. First operand 192 states and 267 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:25,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:21:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:25,344 INFO L93 Difference]: Finished difference Result 192 states and 267 transitions. [2022-11-22 01:21:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-11-22 01:21:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:25,345 INFO L225 Difference]: With dead ends: 192 [2022-11-22 01:21:25,345 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:21:25,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:25,347 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 115 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:25,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 101 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 01:21:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:21:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:21:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:21:25,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-11-22 01:21:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:25,349 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:21:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:21:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:21:25,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:21:25,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:21:25,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:21:25,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:21:25,850 INFO L899 garLoopResultBuilder]: For program point L6653-1(lines 6653 6654) no Hoare annotation was computed. [2022-11-22 01:21:25,851 INFO L902 garLoopResultBuilder]: At program point L6653(lines 6653 6654) the Hoare annotation is: true [2022-11-22 01:21:25,851 INFO L899 garLoopResultBuilder]: For program point get_dma_opsEXIT(lines 6650 6661) no Hoare annotation was computed. [2022-11-22 01:21:25,851 INFO L902 garLoopResultBuilder]: At program point get_dma_opsENTRY(lines 6650 6661) the Hoare annotation is: true [2022-11-22 01:21:25,851 INFO L902 garLoopResultBuilder]: At program point flexcop_device_kfreeENTRY(lines 8049 8051) the Hoare annotation is: true [2022-11-22 01:21:25,851 INFO L899 garLoopResultBuilder]: For program point flexcop_device_kfreeEXIT(lines 8049 8051) no Hoare annotation was computed. [2022-11-22 01:21:25,851 INFO L902 garLoopResultBuilder]: At program point usb_set_intfdataENTRY(lines 6608 6614) the Hoare annotation is: true [2022-11-22 01:21:25,851 INFO L899 garLoopResultBuilder]: For program point usb_set_intfdataEXIT(lines 6608 6614) no Hoare annotation was computed. [2022-11-22 01:21:25,851 INFO L902 garLoopResultBuilder]: At program point flexcop_device_exitENTRY(lines 8042 8044) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L899 garLoopResultBuilder]: For program point flexcop_device_exitEXIT(lines 8042 8044) no Hoare annotation was computed. [2022-11-22 01:21:25,852 INFO L899 garLoopResultBuilder]: For program point usb_submit_urbEXIT(lines 8107 8109) no Hoare annotation was computed. [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point usb_submit_urbENTRY(lines 8107 8109) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L899 garLoopResultBuilder]: For program point L6555-1(lines 6555 6556) no Hoare annotation was computed. [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point L6555(lines 6555 6556) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point L6741-1(line 6741) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point L6741(line 6741) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point L6560(lines 6557 6562) the Hoare annotation is: true [2022-11-22 01:21:25,852 INFO L902 garLoopResultBuilder]: At program point L7233(lines 7219 7246) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L899 garLoopResultBuilder]: For program point flexcop_usb_transfer_exitEXIT(lines 7217 7247) no Hoare annotation was computed. [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point L6742-2(lines 6742 6746) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point L6747(line 6747) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point L6557(lines 6557 6563) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point flexcop_usb_transfer_exitENTRY(lines 7217 7247) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L899 garLoopResultBuilder]: For program point L6736-1(line 6736) no Hoare annotation was computed. [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point L6736(line 6736) the Hoare annotation is: true [2022-11-22 01:21:25,853 INFO L899 garLoopResultBuilder]: For program point L7240-2(lines 7217 7247) no Hoare annotation was computed. [2022-11-22 01:21:25,853 INFO L899 garLoopResultBuilder]: For program point L7240(lines 7240 7244) no Hoare annotation was computed. [2022-11-22 01:21:25,853 INFO L902 garLoopResultBuilder]: At program point __create_pipeENTRY(lines 6634 6639) the Hoare annotation is: true [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point __create_pipeEXIT(lines 6634 6639) no Hoare annotation was computed. [2022-11-22 01:21:25,854 INFO L902 garLoopResultBuilder]: At program point ldv_mallocENTRY(lines 8030 8034) the Hoare annotation is: true [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point ldv_mallocEXIT(lines 8030 8034) no Hoare annotation was computed. [2022-11-22 01:21:25,854 INFO L902 garLoopResultBuilder]: At program point ldv_errorENTRY(lines 7668 7673) the Hoare annotation is: true [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7671) no Hoare annotation was computed. [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point ldv_errorEXIT(lines 7668 7673) no Hoare annotation was computed. [2022-11-22 01:21:25,854 INFO L902 garLoopResultBuilder]: At program point flexcop_usb_exitENTRY(lines 7382 7388) the Hoare annotation is: true [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point flexcop_usb_exitEXIT(lines 7382 7388) no Hoare annotation was computed. [2022-11-22 01:21:25,854 INFO L899 garLoopResultBuilder]: For program point L7385-1(line 7385) no Hoare annotation was computed. [2022-11-22 01:21:25,855 INFO L902 garLoopResultBuilder]: At program point L7385(line 7385) the Hoare annotation is: true [2022-11-22 01:21:25,855 INFO L899 garLoopResultBuilder]: For program point L7451-1(line 7451) no Hoare annotation was computed. [2022-11-22 01:21:25,855 INFO L895 garLoopResultBuilder]: At program point L7451(line 7451) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,855 INFO L899 garLoopResultBuilder]: For program point L7517(line 7517) no Hoare annotation was computed. [2022-11-22 01:21:25,855 INFO L895 garLoopResultBuilder]: At program point L7286(lines 7259 7356) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,855 INFO L899 garLoopResultBuilder]: For program point L8013-1(lines 8006 8020) no Hoare annotation was computed. [2022-11-22 01:21:25,856 INFO L895 garLoopResultBuilder]: At program point L8013(line 8013) the Hoare annotation is: false [2022-11-22 01:21:25,856 INFO L899 garLoopResultBuilder]: For program point L7270(lines 7270 7273) no Hoare annotation was computed. [2022-11-22 01:21:25,856 INFO L899 garLoopResultBuilder]: For program point L7369(line 7369) no Hoare annotation was computed. [2022-11-22 01:21:25,856 INFO L895 garLoopResultBuilder]: At program point L7518(lines 7518 7526) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,856 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-22 01:21:25,856 INFO L899 garLoopResultBuilder]: For program point L7452-1(line 7452) no Hoare annotation was computed. [2022-11-22 01:21:25,856 INFO L895 garLoopResultBuilder]: At program point L7452(line 7452) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,856 INFO L899 garLoopResultBuilder]: For program point L7354(line 7354) no Hoare annotation was computed. [2022-11-22 01:21:25,857 INFO L895 garLoopResultBuilder]: At program point L7420(lines 7420 7423) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,857 INFO L899 garLoopResultBuilder]: For program point L7453-1(line 7453) no Hoare annotation was computed. [2022-11-22 01:21:25,857 INFO L895 garLoopResultBuilder]: At program point L7453(line 7453) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,857 INFO L895 garLoopResultBuilder]: At program point L7437(lines 7395 7443) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,857 INFO L899 garLoopResultBuilder]: For program point L7305-1(line 7305) no Hoare annotation was computed. [2022-11-22 01:21:25,857 INFO L895 garLoopResultBuilder]: At program point L7305(line 7305) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,857 INFO L895 garLoopResultBuilder]: At program point L7454(line 7454) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L7355(lines 7248 7357) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L7454-1(line 7454) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L8083-1(line 8083) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L8083(line 8083) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L7439(lines 7395 7443) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,858 INFO L902 garLoopResultBuilder]: At program point L8017-1(lines 8004 8021) the Hoare annotation is: true [2022-11-22 01:21:25,858 INFO L895 garLoopResultBuilder]: At program point L8017(line 8017) the Hoare annotation is: false [2022-11-22 01:21:25,858 INFO L899 garLoopResultBuilder]: For program point L7373(line 7373) no Hoare annotation was computed. [2022-11-22 01:21:25,858 INFO L899 garLoopResultBuilder]: For program point L7555(line 7555) no Hoare annotation was computed. [2022-11-22 01:21:25,859 INFO L895 garLoopResultBuilder]: At program point L7324(lines 7259 7356) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,859 INFO L895 garLoopResultBuilder]: At program point L7556(lines 7556 7568) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,860 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:21:25,861 INFO L895 garLoopResultBuilder]: At program point L7342(lines 7259 7356) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,861 INFO L899 garLoopResultBuilder]: For program point L7441(line 7441) no Hoare annotation was computed. [2022-11-22 01:21:25,861 INFO L895 garLoopResultBuilder]: At program point L8036-1(line 8036) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,861 INFO L895 garLoopResultBuilder]: At program point L8036(line 8036) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,861 INFO L899 garLoopResultBuilder]: For program point L7425(lines 7425 7428) no Hoare annotation was computed. [2022-11-22 01:21:25,862 INFO L895 garLoopResultBuilder]: At program point L7442(lines 7389 7444) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,862 INFO L895 garLoopResultBuilder]: At program point L8053-1(line 8053) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,862 INFO L895 garLoopResultBuilder]: At program point L8053(line 8053) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,862 INFO L899 garLoopResultBuilder]: For program point L7558-2(lines 7556 7567) no Hoare annotation was computed. [2022-11-22 01:21:25,862 INFO L895 garLoopResultBuilder]: At program point L7377(lines 7360 7380) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,862 INFO L899 garLoopResultBuilder]: For program point L7543(line 7543) no Hoare annotation was computed. [2022-11-22 01:21:25,863 INFO L895 garLoopResultBuilder]: At program point L7378(line 7378) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,863 INFO L899 garLoopResultBuilder]: For program point L7378-1(line 7378) no Hoare annotation was computed. [2022-11-22 01:21:25,863 INFO L899 garLoopResultBuilder]: For program point L7544(lines 7544 7575) no Hoare annotation was computed. [2022-11-22 01:21:25,863 INFO L895 garLoopResultBuilder]: At program point L7379(lines 7358 7381) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,863 INFO L899 garLoopResultBuilder]: For program point L7280(lines 7280 7284) no Hoare annotation was computed. [2022-11-22 01:21:25,863 INFO L899 garLoopResultBuilder]: For program point L8007(lines 8007 8010) no Hoare annotation was computed. [2022-11-22 01:21:25,864 INFO L899 garLoopResultBuilder]: For program point L7528(line 7528) no Hoare annotation was computed. [2022-11-22 01:21:25,864 INFO L899 garLoopResultBuilder]: For program point L7363(line 7363) no Hoare annotation was computed. [2022-11-22 01:21:25,864 INFO L895 garLoopResultBuilder]: At program point L6703-1(line 6703) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,864 INFO L895 garLoopResultBuilder]: At program point L6703(line 6703) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,864 INFO L899 garLoopResultBuilder]: For program point L7430(lines 7430 7433) no Hoare annotation was computed. [2022-11-22 01:21:25,864 INFO L899 garLoopResultBuilder]: For program point L7529(lines 7529 7534) no Hoare annotation was computed. [2022-11-22 01:21:25,865 INFO L899 garLoopResultBuilder]: For program point L7331-1(line 7331) no Hoare annotation was computed. [2022-11-22 01:21:25,865 INFO L895 garLoopResultBuilder]: At program point L7331(line 7331) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,865 INFO L899 garLoopResultBuilder]: For program point L7513(line 7513) no Hoare annotation was computed. [2022-11-22 01:21:25,865 INFO L895 garLoopResultBuilder]: At program point L7431(lines 7395 7443) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,865 INFO L899 garLoopResultBuilder]: For program point L8009-1(lines 8006 8020) no Hoare annotation was computed. [2022-11-22 01:21:25,866 INFO L895 garLoopResultBuilder]: At program point L8009(line 8009) the Hoare annotation is: false [2022-11-22 01:21:25,866 INFO L899 garLoopResultBuilder]: For program point L7332(lines 7332 7336) no Hoare annotation was computed. [2022-11-22 01:21:25,866 INFO L899 garLoopResultBuilder]: For program point L7514(lines 7514 7541) no Hoare annotation was computed. [2022-11-22 01:21:25,866 INFO L895 garLoopResultBuilder]: At program point L-1-3(line -1) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,866 INFO L899 garLoopResultBuilder]: For program point L7547(line 7547) no Hoare annotation was computed. [2022-11-22 01:21:25,866 INFO L895 garLoopResultBuilder]: At program point L7580(lines 7505 7585) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,866 INFO L895 garLoopResultBuilder]: At program point L7564(lines 7505 7585) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,867 INFO L899 garLoopResultBuilder]: For program point L7366(line 7366) no Hoare annotation was computed. [2022-11-22 01:21:25,867 INFO L895 garLoopResultBuilder]: At program point L7548(lines 7548 7553) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,867 INFO L895 garLoopResultBuilder]: At program point L7334(lines 7259 7356) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,867 INFO L895 garLoopResultBuilder]: At program point L7401(lines 7401 7405) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_cred_guard_mutex_of_signal_struct~0 1)) [2022-11-22 01:21:25,867 INFO L902 garLoopResultBuilder]: At program point ldv__builtin_expectENTRY(lines 7675 7680) the Hoare annotation is: true [2022-11-22 01:21:25,868 INFO L899 garLoopResultBuilder]: For program point ldv__builtin_expectEXIT(lines 7675 7680) no Hoare annotation was computed. [2022-11-22 01:21:25,871 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:25,873 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:21:25,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:21:25 BoogieIcfgContainer [2022-11-22 01:21:25,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:21:25,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:21:25,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:21:25,891 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:21:25,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:21:05" (3/4) ... [2022-11-22 01:21:25,894 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:21:25,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dma_ops [2022-11-22 01:21:25,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure flexcop_device_kfree [2022-11-22 01:21:25,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-11-22 01:21:25,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2022-11-22 01:21:25,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure flexcop_usb_exit [2022-11-22 01:21:25,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usb_set_intfdata [2022-11-22 01:21:25,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure flexcop_device_exit [2022-11-22 01:21:25,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usb_submit_urb [2022-11-22 01:21:25,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure flexcop_usb_transfer_exit [2022-11-22 01:21:25,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __create_pipe [2022-11-22 01:21:25,902 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv__builtin_expect [2022-11-22 01:21:25,916 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 192 nodes and edges [2022-11-22 01:21:25,918 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2022-11-22 01:21:25,919 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-22 01:21:25,921 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 01:21:25,922 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:21:25,923 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:21:25,925 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:21:26,041 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:21:26,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:21:26,042 INFO L158 Benchmark]: Toolchain (without parser) took 25812.74ms. Allocated memory was 165.7MB in the beginning and 308.3MB in the end (delta: 142.6MB). Free memory was 118.0MB in the beginning and 209.5MB in the end (delta: -91.4MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,042 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:21:26,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2002.67ms. Allocated memory was 165.7MB in the beginning and 213.9MB in the end (delta: 48.2MB). Free memory was 118.0MB in the beginning and 122.2MB in the end (delta: -4.2MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.09ms. Allocated memory is still 213.9MB. Free memory was 122.2MB in the beginning and 113.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,043 INFO L158 Benchmark]: Boogie Preprocessor took 89.30ms. Allocated memory is still 213.9MB. Free memory was 113.8MB in the beginning and 105.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,043 INFO L158 Benchmark]: RCFGBuilder took 3087.20ms. Allocated memory is still 213.9MB. Free memory was 105.5MB in the beginning and 101.9MB in the end (delta: 3.6MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,044 INFO L158 Benchmark]: TraceAbstraction took 20358.85ms. Allocated memory was 213.9MB in the beginning and 308.3MB in the end (delta: 94.4MB). Free memory was 100.8MB in the beginning and 225.2MB in the end (delta: -124.4MB). Peak memory consumption was 116.9MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,044 INFO L158 Benchmark]: Witness Printer took 150.93ms. Allocated memory is still 308.3MB. Free memory was 225.2MB in the beginning and 209.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 01:21:26,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2002.67ms. Allocated memory was 165.7MB in the beginning and 213.9MB in the end (delta: 48.2MB). Free memory was 118.0MB in the beginning and 122.2MB in the end (delta: -4.2MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.09ms. Allocated memory is still 213.9MB. Free memory was 122.2MB in the beginning and 113.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.30ms. Allocated memory is still 213.9MB. Free memory was 113.8MB in the beginning and 105.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3087.20ms. Allocated memory is still 213.9MB. Free memory was 105.5MB in the beginning and 101.9MB in the end (delta: 3.6MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20358.85ms. Allocated memory was 213.9MB in the beginning and 308.3MB in the end (delta: 94.4MB). Free memory was 100.8MB in the beginning and 225.2MB in the end (delta: -124.4MB). Peak memory consumption was 116.9MB. Max. memory is 16.1GB. * Witness Printer took 150.93ms. Allocated memory is still 308.3MB. Free memory was 225.2MB in the beginning and 209.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7671]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 672 SdHoareTripleChecker+Valid, 16.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 672 mSDsluCounter, 1450 SdHoareTripleChecker+Invalid, 16.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 521 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 570 IncrementalHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 929 mSDtfsCounter, 570 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 250 PreInvPairs, 292 NumberOfFragments, 377 HoareAnnotationTreeSize, 250 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 62 FomulaSimplificationsInter, 530 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 29/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6608]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7259]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7548]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7556]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7395]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7259]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7395]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 8036]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7360]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 6557]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6703]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7358]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8053]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7505]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7259]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 8083]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 6747]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8004]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7454]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7518]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7401]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7420]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7505]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7395]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 6557]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7248]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7259]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7219]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 7389]: Loop Invariant Derived loop invariant: (1 == ldv_mutex_mutex_of_device && ldv_mutex_lock == 1) && ldv_mutex_cred_guard_mutex_of_signal_struct == 1 - InvariantResult [Line: 6741]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-22 01:21:26,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_883fe7d9-86d0-4d80-a7c6-9a8ce38f2c8b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE