./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 177820d4eabfc5ee57ceefc8e45d1c58baa48df59132cf6258d84a611844e62c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:10:41,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:10:41,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:10:41,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:10:41,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:10:41,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:10:41,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:10:41,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:10:41,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:10:41,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:10:41,327 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:10:41,328 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:10:41,328 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:10:41,329 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:10:41,330 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:10:41,330 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:10:41,331 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:10:41,332 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:10:41,332 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:10:41,333 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:10:41,334 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:10:41,335 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:10:41,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:10:41,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:10:41,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:10:41,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:10:41,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:10:41,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:10:41,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:10:41,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:10:41,340 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:10:41,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:10:41,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:10:41,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:10:41,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:10:41,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:10:41,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:10:41,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:10:41,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:10:41,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:10:41,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:10:41,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:10:41,344 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:10:41,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:10:41,344 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 177820d4eabfc5ee57ceefc8e45d1c58baa48df59132cf6258d84a611844e62c [2023-12-02 15:10:41,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:10:41,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:10:41,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:10:41,639 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:10:41,640 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:10:41,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-12-02 15:10:45,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:10:45,658 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:10:45,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-12-02 15:10:45,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/data/9eb86d368/a1d20f3a91c34e5082230e444d8deaf8/FLAG279d6575c [2023-12-02 15:10:45,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/data/9eb86d368/a1d20f3a91c34e5082230e444d8deaf8 [2023-12-02 15:10:45,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:10:45,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:10:45,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:10:45,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:10:45,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:10:45,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:10:45" (1/1) ... [2023-12-02 15:10:45,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cc411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:45, skipping insertion in model container [2023-12-02 15:10:45,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:10:45" (1/1) ... [2023-12-02 15:10:45,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:10:46,392 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2023-12-02 15:10:46,409 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2023-12-02 15:10:46,410 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2023-12-02 15:10:46,766 WARN L240 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_2efb206e-1a12-4440-814a-afebad40b056/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i[151293,151306] [2023-12-02 15:10:47,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:10:47,390 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:10:47,507 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2023-12-02 15:10:47,516 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2023-12-02 15:10:47,516 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2023-12-02 15:10:47,518 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4906] [2023-12-02 15:10:47,525 WARN L240 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_2efb206e-1a12-4440-814a-afebad40b056/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i[151293,151306] [2023-12-02 15:10:47,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:10:47,774 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:10:47,782 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:10:47,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47 WrapperNode [2023-12-02 15:10:47,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:10:47,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:10:47,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:10:47,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:10:47,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:47,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:48,625 INFO L138 Inliner]: procedures = 183, calls = 2530, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 5394 [2023-12-02 15:10:48,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:10:48,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:10:48,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:10:48,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:10:48,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:48,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:10:49,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:10:49,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:10:49,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:10:49,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (1/1) ... [2023-12-02 15:10:49,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:10:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:10:50,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:10:50,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:10:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-12-02 15:10:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-12-02 15:10:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-12-02 15:10:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-12-02 15:10:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 15:10:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 15:10:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:10:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_try_fmt [2023-12-02 15:10:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_try_fmt [2023-12-02 15:10:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:10:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:10:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_frame_size [2023-12-02 15:10:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_frame_size [2023-12-02 15:10:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 15:10:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 15:10:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:10:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dma_contig_free [2023-12-02 15:10:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dma_contig_free [2023-12-02 15:10:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 15:10:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 15:10:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_poll [2023-12-02 15:10:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_poll [2023-12-02 15:10:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 15:10:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 15:10:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:10:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:10:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 15:10:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 15:10:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:10:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 15:10:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 15:10:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 15:10:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 15:10:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 15:10:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 15:10:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_querystd [2023-12-02 15:10:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_querystd [2023-12-02 15:10:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2023-12-02 15:10:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2023-12-02 15:10:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_mmap [2023-12-02 15:10:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_mmap [2023-12-02 15:10:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 15:10:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 15:10:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2023-12-02 15:10:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2023-12-02 15:10:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:10:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:10:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:10:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 15:10:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 15:10:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 15:10:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 15:10:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_get_norm [2023-12-02 15:10:50,081 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_get_norm [2023-12-02 15:10:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:10:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2023-12-02 15:10:50,081 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2023-12-02 15:10:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 15:10:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 15:10:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2023-12-02 15:10:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2023-12-02 15:10:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-12-02 15:10:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-12-02 15:10:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:10:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-12-02 15:10:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-12-02 15:10:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:10:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_cap_set [2023-12-02 15:10:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_cap_set [2023-12-02 15:10:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 15:10:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 15:10:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 15:10:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 15:10:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_bytes_per_line [2023-12-02 15:10:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_bytes_per_line [2023-12-02 15:10:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:10:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:10:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 15:10:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 15:10:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 15:10:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:10:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:10:50,913 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:10:50,917 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:10:51,119 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 15:11:02,250 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:11:03,904 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:11:03,904 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:11:03,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:11:03 BoogieIcfgContainer [2023-12-02 15:11:03,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:11:03,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:11:03,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:11:03,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:11:03,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:10:45" (1/3) ... [2023-12-02 15:11:03,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8d5d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:11:03, skipping insertion in model container [2023-12-02 15:11:03,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:10:47" (2/3) ... [2023-12-02 15:11:03,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8d5d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:11:03, skipping insertion in model container [2023-12-02 15:11:03,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:11:03" (3/3) ... [2023-12-02 15:11:03,918 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-12-02 15:11:03,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:11:03,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:11:04,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:11:04,022 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=LoopHeads, 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;@2a594bd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:11:04,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:11:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 429 states have (on average 1.3613053613053614) internal successors, (584), 440 states have internal predecessors, (584), 203 states have call successors, (203), 35 states have call predecessors, (203), 34 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-02 15:11:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-02 15:11:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:04,079 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:04,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:11:04,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash -687916302, now seen corresponding path program 1 times [2023-12-02 15:11:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:04,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955196004] [2023-12-02 15:11:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2023-12-02 15:11:05,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955196004] [2023-12-02 15:11:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955196004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:11:05,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838401384] [2023-12-02 15:11:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:05,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:05,203 INFO L87 Difference]: Start difference. First operand has 668 states, 429 states have (on average 1.3613053613053614) internal successors, (584), 440 states have internal predecessors, (584), 203 states have call successors, (203), 35 states have call predecessors, (203), 34 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 15:11:08,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:12,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:14,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:15,414 INFO L93 Difference]: Finished difference Result 1727 states and 2533 transitions. [2023-12-02 15:11:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 272 [2023-12-02 15:11:15,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:15,455 INFO L225 Difference]: With dead ends: 1727 [2023-12-02 15:11:15,455 INFO L226 Difference]: Without dead ends: 1119 [2023-12-02 15:11:15,464 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 [2023-12-02 15:11:15,468 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 794 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:15,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1631 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 15:11:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-12-02 15:11:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1118. [2023-12-02 15:11:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 741 states have (on average 1.3562753036437247) internal successors, (1005), 746 states have internal predecessors, (1005), 313 states have call successors, (313), 64 states have call predecessors, (313), 63 states have return successors, (312), 311 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-02 15:11:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1630 transitions. [2023-12-02 15:11:15,666 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1630 transitions. Word has length 272 [2023-12-02 15:11:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:15,669 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1630 transitions. [2023-12-02 15:11:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 15:11:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1630 transitions. [2023-12-02 15:11:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-02 15:11:15,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:15,689 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:11:15,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:11:15,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1060282865, now seen corresponding path program 1 times [2023-12-02 15:11:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347348569] [2023-12-02 15:11:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3466 trivial. 0 not checked. [2023-12-02 15:11:17,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347348569] [2023-12-02 15:11:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347348569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:11:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052740665] [2023-12-02 15:11:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:17,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:11:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:11:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:11:17,344 INFO L87 Difference]: Start difference. First operand 1118 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 15:11:20,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:23,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:26,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:28,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:30,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:32,001 INFO L93 Difference]: Finished difference Result 2119 states and 3103 transitions. [2023-12-02 15:11:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:11:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 324 [2023-12-02 15:11:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:32,020 INFO L225 Difference]: With dead ends: 2119 [2023-12-02 15:11:32,020 INFO L226 Difference]: Without dead ends: 2116 [2023-12-02 15:11:32,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:32,023 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 827 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:32,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2488 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 5 Unknown, 0 Unchecked, 14.5s Time] [2023-12-02 15:11:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2023-12-02 15:11:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2102. [2023-12-02 15:11:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 1412 states have (on average 1.3718130311614731) internal successors, (1937), 1424 states have internal predecessors, (1937), 574 states have call successors, (574), 118 states have call predecessors, (574), 115 states have return successors, (573), 565 states have call predecessors, (573), 573 states have call successors, (573) [2023-12-02 15:11:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3084 transitions. [2023-12-02 15:11:32,192 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3084 transitions. Word has length 324 [2023-12-02 15:11:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:32,194 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 3084 transitions. [2023-12-02 15:11:32,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 15:11:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3084 transitions. [2023-12-02 15:11:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-02 15:11:32,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:32,218 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:32,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:11:32,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:11:32,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1736308508, now seen corresponding path program 1 times [2023-12-02 15:11:32,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:32,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67271665] [2023-12-02 15:11:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:32,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:32,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:11:32,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676641512] [2023-12-02 15:11:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:32,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:32,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:32,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:11:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:34,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 4349 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:11:34,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 877 proven. 0 refuted. 0 times theorem prover too weak. 2608 trivial. 0 not checked. [2023-12-02 15:11:34,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:34,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67271665] [2023-12-02 15:11:34,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:11:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676641512] [2023-12-02 15:11:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676641512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:34,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:34,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:11:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173008362] [2023-12-02 15:11:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:34,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:11:34,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:11:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:34,773 INFO L87 Difference]: Start difference. First operand 2102 states and 3084 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2023-12-02 15:11:37,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:40,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:42,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:43,881 INFO L93 Difference]: Finished difference Result 6034 states and 8838 transitions. [2023-12-02 15:11:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:11:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 378 [2023-12-02 15:11:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:43,920 INFO L225 Difference]: With dead ends: 6034 [2023-12-02 15:11:43,921 INFO L226 Difference]: Without dead ends: 4011 [2023-12-02 15:11:43,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:11:43,932 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 911 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:43,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1564 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 15:11:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2023-12-02 15:11:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4008. [2023-12-02 15:11:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2717 states have (on average 1.3761501656238497) internal successors, (3739), 2735 states have internal predecessors, (3739), 1060 states have call successors, (1060), 235 states have call predecessors, (1060), 230 states have return successors, (1059), 1049 states have call predecessors, (1059), 1059 states have call successors, (1059) [2023-12-02 15:11:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5858 transitions. [2023-12-02 15:11:44,242 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5858 transitions. Word has length 378 [2023-12-02 15:11:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:44,243 INFO L495 AbstractCegarLoop]: Abstraction has 4008 states and 5858 transitions. [2023-12-02 15:11:44,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2023-12-02 15:11:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5858 transitions. [2023-12-02 15:11:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-02 15:11:44,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:44,277 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:44,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:44,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:11:44,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1670475950, now seen corresponding path program 1 times [2023-12-02 15:11:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708048713] [2023-12-02 15:11:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:44,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:11:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709507939] [2023-12-02 15:11:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:44,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:44,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:44,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:44,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:11:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:46,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 4349 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:11:46,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 989 proven. 0 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2023-12-02 15:11:46,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:11:46,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:11:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708048713] [2023-12-02 15:11:46,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:11:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709507939] [2023-12-02 15:11:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709507939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:11:46,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:11:46,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:11:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112500702] [2023-12-02 15:11:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:11:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:11:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:11:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:11:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:11:46,654 INFO L87 Difference]: Start difference. First operand 4008 states and 5858 transitions. Second operand has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 15:11:50,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:53,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:55,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:11:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:11:56,916 INFO L93 Difference]: Finished difference Result 7960 states and 11640 transitions. [2023-12-02 15:11:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:11:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 378 [2023-12-02 15:11:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:11:56,950 INFO L225 Difference]: With dead ends: 7960 [2023-12-02 15:11:56,950 INFO L226 Difference]: Without dead ends: 4020 [2023-12-02 15:11:56,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:11:56,966 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:11:56,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2600 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 285 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 15:11:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2023-12-02 15:11:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 4020. [2023-12-02 15:11:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 2725 states have (on average 1.37651376146789) internal successors, (3751), 2747 states have internal predecessors, (3751), 1060 states have call successors, (1060), 235 states have call predecessors, (1060), 234 states have return successors, (1063), 1049 states have call predecessors, (1063), 1059 states have call successors, (1063) [2023-12-02 15:11:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5874 transitions. [2023-12-02 15:11:57,200 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5874 transitions. Word has length 378 [2023-12-02 15:11:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:11:57,201 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5874 transitions. [2023-12-02 15:11:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 15:11:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5874 transitions. [2023-12-02 15:11:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-02 15:11:57,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:11:57,226 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:11:57,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 15:11:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:57,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:11:57,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:11:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1374414458, now seen corresponding path program 1 times [2023-12-02 15:11:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:11:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895194681] [2023-12-02 15:11:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:11:57,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:11:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209331937] [2023-12-02 15:11:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:11:57,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:57,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:57,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2efb206e-1a12-4440-814a-afebad40b056/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:11:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:11:59,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 4409 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:11:59,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 998 proven. 1 refuted. 0 times theorem prover too weak. 2508 trivial. 0 not checked. [2023-12-02 15:11:59,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2023-12-02 15:12:00,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895194681] [2023-12-02 15:12:00,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:12:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209331937] [2023-12-02 15:12:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209331937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658050151] [2023-12-02 15:12:00,034 INFO L159 IcfgInterpreter]: Started Sifa with 189 locations of interest [2023-12-02 15:12:00,034 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:00,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:00,046 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:00,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:13:46,400 WARN L293 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 3403 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:13:51,944 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 3403 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:14:00,120 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 3408 DAG size of output: 3400 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:14:05,598 WARN L293 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 3403 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:14:11,089 WARN L293 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 3403 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:14:19,177 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 3408 DAG size of output: 3400 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:19:30,090 WARN L293 SmtUtils]: Spent 11.05s on a formula simplification that was a NOOP. DAG size: 3426 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:19:41,546 WARN L293 SmtUtils]: Spent 11.33s on a formula simplification that was a NOOP. DAG size: 3426 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)