./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E --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 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:00:43,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:00:43,364 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:00:43,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:00:43,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:00:43,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:00:43,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:00:43,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:00:43,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:00:43,400 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:00:43,400 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:00:43,401 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:00:43,401 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:00:43,401 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:00:43,401 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:00:43,401 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:00:43,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:00:43,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:00:43,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:00:43,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:00:43,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:00:43,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:00:43,410 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:00:43,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:00:43,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:00:43,411 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:00:43,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:00:43,411 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E 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 -> 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 [2024-11-14 05:00:43,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:00:43,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:00:43,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:00:43,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:00:43,784 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:00:43,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 05:00:45,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:00:46,478 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:00:46,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2024-11-14 05:00:46,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/data/aaf715ec8/d3687b3d10ef47e9a4e981b571f37d0b/FLAGeb34d91d3 [2024-11-14 05:00:46,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/data/aaf715ec8/d3687b3d10ef47e9a4e981b571f37d0b [2024-11-14 05:00:46,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:00:46,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:00:46,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:00:46,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:00:46,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:00:46,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:00:46" (1/1) ... [2024-11-14 05:00:46,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e287fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:46, skipping insertion in model container [2024-11-14 05:00:46,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:00:46" (1/1) ... [2024-11-14 05:00:46,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:00:47,358 WARN L250 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_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2024-11-14 05:00:47,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:00:47,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:00:47,928 WARN L250 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_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2024-11-14 05:00:48,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:00:48,137 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:00:48,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48 WrapperNode [2024-11-14 05:00:48,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:00:48,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:00:48,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:00:48,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:00:48,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,351 INFO L138 Inliner]: procedures = 113, calls = 1240, calls flagged for inlining = 52, calls inlined = 49, statements flattened = 2688 [2024-11-14 05:00:48,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:00:48,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:00:48,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:00:48,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:00:48,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:00:48,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:00:48,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:00:48,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:00:48,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (1/1) ... [2024-11-14 05:00:48,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:00:48,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:00:48,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:00:48,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:00:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-11-14 05:00:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-11-14 05:00:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 05:00:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 05:00:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 05:00:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 05:00:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:00:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-14 05:00:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-14 05:00:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 05:00:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 05:00:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2024-11-14 05:00:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2024-11-14 05:00:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-14 05:00:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-14 05:00:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:00:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 05:00:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 05:00:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-11-14 05:00:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-14 05:00:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:00:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-14 05:00:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure gtco_disconnect [2024-11-14 05:00:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure gtco_disconnect [2024-11-14 05:00:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2024-11-14 05:00:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-14 05:00:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2024-11-14 05:00:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-14 05:00:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-14 05:00:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:00:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:00:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2024-11-14 05:00:48,654 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2024-11-14 05:00:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-14 05:00:48,654 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-14 05:00:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-14 05:00:48,654 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-14 05:00:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-14 05:00:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-14 05:00:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:00:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-14 05:00:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-14 05:00:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:00:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:00:49,254 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:00:49,259 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:00:49,437 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 05:00:49,543 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-14 05:00:57,009 INFO L? ?]: Removed 842 outVars from TransFormulas that were not future-live. [2024-11-14 05:00:57,009 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:00:57,624 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:00:57,624 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 05:00:57,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:00:57 BoogieIcfgContainer [2024-11-14 05:00:57,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:00:57,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:00:57,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:00:57,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:00:57,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:00:46" (1/3) ... [2024-11-14 05:00:57,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5696985b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:00:57, skipping insertion in model container [2024-11-14 05:00:57,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:00:48" (2/3) ... [2024-11-14 05:00:57,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5696985b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:00:57, skipping insertion in model container [2024-11-14 05:00:57,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:00:57" (3/3) ... [2024-11-14 05:00:57,636 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2024-11-14 05:00:57,654 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:00:57,657 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i that has 22 procedures, 408 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 05:00:57,751 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:00:57,770 INFO L333 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, 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;@6171a2aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:00:57,771 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:00:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 266 states have (on average 1.4248120300751879) internal successors, (379), 292 states have internal predecessors, (379), 119 states have call successors, (119), 21 states have call predecessors, (119), 19 states have return successors, (115), 103 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-14 05:00:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:00:57,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:00:57,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:00:57,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:00:57,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:00:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1077540093, now seen corresponding path program 1 times [2024-11-14 05:00:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:00:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508639082] [2024-11-14 05:00:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:00:57,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:01:01,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:01,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508639082] [2024-11-14 05:01:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508639082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:01,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:01,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:01,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960179584] [2024-11-14 05:01:01,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:01,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:01,893 INFO L87 Difference]: Start difference. First operand has 406 states, 266 states have (on average 1.4248120300751879) internal successors, (379), 292 states have internal predecessors, (379), 119 states have call successors, (119), 21 states have call predecessors, (119), 19 states have return successors, (115), 103 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:01:03,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:06,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:07,925 INFO L93 Difference]: Finished difference Result 1192 states and 1842 transitions. [2024-11-14 05:01:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:07,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-14 05:01:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:07,956 INFO L225 Difference]: With dead ends: 1192 [2024-11-14 05:01:07,956 INFO L226 Difference]: Without dead ends: 775 [2024-11-14 05:01:07,963 INFO L431 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 [2024-11-14 05:01:07,966 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 572 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:07,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1089 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2024-11-14 05:01:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-14 05:01:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2024-11-14 05:01:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 515 states have (on average 1.3922330097087379) internal successors, (717), 551 states have internal predecessors, (717), 223 states have call successors, (223), 37 states have call predecessors, (223), 36 states have return successors, (218), 194 states have call predecessors, (218), 218 states have call successors, (218) [2024-11-14 05:01:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1158 transitions. [2024-11-14 05:01:08,148 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1158 transitions. Word has length 17 [2024-11-14 05:01:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:08,149 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1158 transitions. [2024-11-14 05:01:08,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:01:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1158 transitions. [2024-11-14 05:01:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:01:08,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:08,152 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:08,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:01:08,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:08,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 608228010, now seen corresponding path program 1 times [2024-11-14 05:01:08,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:08,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416436203] [2024-11-14 05:01:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:08,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:01:10,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:10,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416436203] [2024-11-14 05:01:10,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416436203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:10,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515920465] [2024-11-14 05:01:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:10,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:10,875 INFO L87 Difference]: Start difference. First operand 775 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-14 05:01:12,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:14,330 INFO L93 Difference]: Finished difference Result 967 states and 1400 transitions. [2024-11-14 05:01:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 25 [2024-11-14 05:01:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:14,339 INFO L225 Difference]: With dead ends: 967 [2024-11-14 05:01:14,340 INFO L226 Difference]: Without dead ends: 964 [2024-11-14 05:01:14,341 INFO L431 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 [2024-11-14 05:01:14,342 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 122 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:14,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1065 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 05:01:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-14 05:01:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 952. [2024-11-14 05:01:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 635 states have (on average 1.3700787401574803) internal successors, (870), 675 states have internal predecessors, (870), 259 states have call successors, (259), 58 states have call predecessors, (259), 57 states have return successors, (254), 228 states have call predecessors, (254), 254 states have call successors, (254) [2024-11-14 05:01:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1383 transitions. [2024-11-14 05:01:14,418 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1383 transitions. Word has length 25 [2024-11-14 05:01:14,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:14,419 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1383 transitions. [2024-11-14 05:01:14,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-14 05:01:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1383 transitions. [2024-11-14 05:01:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:01:14,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:14,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:14,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:01:14,421 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:14,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1674931345, now seen corresponding path program 1 times [2024-11-14 05:01:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946393517] [2024-11-14 05:01:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:01:16,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:16,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946393517] [2024-11-14 05:01:16,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946393517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:16,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:16,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669839118] [2024-11-14 05:01:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:16,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:16,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:16,946 INFO L87 Difference]: Start difference. First operand 952 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-14 05:01:19,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:20,479 INFO L93 Difference]: Finished difference Result 2063 states and 2963 transitions. [2024-11-14 05:01:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:20,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 26 [2024-11-14 05:01:20,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:20,488 INFO L225 Difference]: With dead ends: 2063 [2024-11-14 05:01:20,489 INFO L226 Difference]: Without dead ends: 1120 [2024-11-14 05:01:20,493 INFO L431 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 [2024-11-14 05:01:20,494 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 104 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:20,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1063 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2024-11-14 05:01:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-11-14 05:01:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1110. [2024-11-14 05:01:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 744 states have (on average 1.3548387096774193) internal successors, (1008), 788 states have internal predecessors, (1008), 287 states have call successors, (287), 79 states have call predecessors, (287), 78 states have return successors, (282), 254 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-14 05:01:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1577 transitions. [2024-11-14 05:01:20,573 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1577 transitions. Word has length 26 [2024-11-14 05:01:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:20,574 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1577 transitions. [2024-11-14 05:01:20,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-14 05:01:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1577 transitions. [2024-11-14 05:01:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:01:20,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:20,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:20,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:01:20,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:20,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 383001229, now seen corresponding path program 1 times [2024-11-14 05:01:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:20,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082343047] [2024-11-14 05:01:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:01:22,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082343047] [2024-11-14 05:01:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082343047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:22,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737551229] [2024-11-14 05:01:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:22,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:22,161 INFO L87 Difference]: Start difference. First operand 1110 states and 1577 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-14 05:01:24,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:26,159 INFO L93 Difference]: Finished difference Result 1118 states and 1584 transitions. [2024-11-14 05:01:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:26,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 27 [2024-11-14 05:01:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:26,170 INFO L225 Difference]: With dead ends: 1118 [2024-11-14 05:01:26,170 INFO L226 Difference]: Without dead ends: 1115 [2024-11-14 05:01:26,171 INFO L431 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 [2024-11-14 05:01:26,172 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 101 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:26,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1060 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2024-11-14 05:01:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-14 05:01:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1111. [2024-11-14 05:01:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 745 states have (on average 1.3543624161073826) internal successors, (1009), 789 states have internal predecessors, (1009), 287 states have call successors, (287), 79 states have call predecessors, (287), 78 states have return successors, (282), 254 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-14 05:01:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1578 transitions. [2024-11-14 05:01:26,261 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1578 transitions. Word has length 27 [2024-11-14 05:01:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:26,262 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1578 transitions. [2024-11-14 05:01:26,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-14 05:01:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1578 transitions. [2024-11-14 05:01:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:01:26,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:26,267 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:01:26,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:01:26,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1012121836, now seen corresponding path program 1 times [2024-11-14 05:01:26,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:26,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704034239] [2024-11-14 05:01:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:01:28,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704034239] [2024-11-14 05:01:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704034239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:28,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775671097] [2024-11-14 05:01:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:28,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:28,150 INFO L87 Difference]: Start difference. First operand 1111 states and 1578 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-14 05:01:30,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:31,270 INFO L93 Difference]: Finished difference Result 1113 states and 1579 transitions. [2024-11-14 05:01:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:31,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 28 [2024-11-14 05:01:31,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:31,279 INFO L225 Difference]: With dead ends: 1113 [2024-11-14 05:01:31,280 INFO L226 Difference]: Without dead ends: 1110 [2024-11-14 05:01:31,280 INFO L431 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 [2024-11-14 05:01:31,283 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 574 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:31,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 532 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 05:01:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-14 05:01:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2024-11-14 05:01:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 745 states have (on average 1.353020134228188) internal successors, (1008), 788 states have internal predecessors, (1008), 286 states have call successors, (286), 79 states have call predecessors, (286), 78 states have return successors, (282), 254 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-14 05:01:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1576 transitions. [2024-11-14 05:01:31,354 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1576 transitions. Word has length 28 [2024-11-14 05:01:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:31,354 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1576 transitions. [2024-11-14 05:01:31,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-14 05:01:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1576 transitions. [2024-11-14 05:01:31,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:01:31,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:31,358 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:01:31,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:01:31,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:31,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1311259024, now seen corresponding path program 1 times [2024-11-14 05:01:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:31,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473847612] [2024-11-14 05:01:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:31,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:01:32,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473847612] [2024-11-14 05:01:32,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473847612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:32,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:32,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950267609] [2024-11-14 05:01:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:32,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:32,887 INFO L87 Difference]: Start difference. First operand 1110 states and 1576 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-14 05:01:34,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:35,931 INFO L93 Difference]: Finished difference Result 1112 states and 1577 transitions. [2024-11-14 05:01:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 29 [2024-11-14 05:01:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:35,942 INFO L225 Difference]: With dead ends: 1112 [2024-11-14 05:01:35,942 INFO L226 Difference]: Without dead ends: 1103 [2024-11-14 05:01:35,943 INFO L431 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 [2024-11-14 05:01:35,945 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 571 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:35,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 531 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 05:01:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2024-11-14 05:01:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2024-11-14 05:01:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 739 states have (on average 1.3518267929634642) internal successors, (999), 781 states have internal predecessors, (999), 285 states have call successors, (285), 79 states have call predecessors, (285), 78 states have return successors, (282), 254 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-14 05:01:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1566 transitions. [2024-11-14 05:01:36,098 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1566 transitions. Word has length 29 [2024-11-14 05:01:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:36,100 INFO L471 AbstractCegarLoop]: Abstraction has 1103 states and 1566 transitions. [2024-11-14 05:01:36,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-14 05:01:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1566 transitions. [2024-11-14 05:01:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 05:01:36,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:36,105 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:36,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:01:36,106 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:36,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -446397943, now seen corresponding path program 1 times [2024-11-14 05:01:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807216915] [2024-11-14 05:01:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 05:01:38,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807216915] [2024-11-14 05:01:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807216915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:01:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:01:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527945569] [2024-11-14 05:01:38,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:38,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:01:38,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:01:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:01:38,642 INFO L87 Difference]: Start difference. First operand 1103 states and 1566 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:01:40,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:01:42,429 INFO L93 Difference]: Finished difference Result 1740 states and 2467 transitions. [2024-11-14 05:01:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:01:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2024-11-14 05:01:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:01:42,434 INFO L225 Difference]: With dead ends: 1740 [2024-11-14 05:01:42,435 INFO L226 Difference]: Without dead ends: 646 [2024-11-14 05:01:42,438 INFO L431 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 [2024-11-14 05:01:42,439 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 36 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:01:42,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1050 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2024-11-14 05:01:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-14 05:01:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 635. [2024-11-14 05:01:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 441 states have (on average 1.3673469387755102) internal successors, (603), 463 states have internal predecessors, (603), 148 states have call successors, (148), 46 states have call predecessors, (148), 45 states have return successors, (145), 131 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-14 05:01:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 896 transitions. [2024-11-14 05:01:42,481 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 896 transitions. Word has length 83 [2024-11-14 05:01:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:01:42,482 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 896 transitions. [2024-11-14 05:01:42,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:01:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 896 transitions. [2024-11-14 05:01:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-14 05:01:42,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:01:42,484 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:01:42,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:01:42,484 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:01:42,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:01:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash -861622322, now seen corresponding path program 1 times [2024-11-14 05:01:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:01:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242494554] [2024-11-14 05:01:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:01:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 05:01:45,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:01:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242494554] [2024-11-14 05:01:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242494554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:01:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677160314] [2024-11-14 05:01:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:01:45,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:01:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:01:45,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:01:45,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:01:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:01:48,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:01:48,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:01:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:01:49,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:01:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677160314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:01:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:01:49,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-14 05:01:49,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584886043] [2024-11-14 05:01:49,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:01:49,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:01:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:01:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:01:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:01:49,488 INFO L87 Difference]: Start difference. First operand 635 states and 896 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-14 05:01:51,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:53,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:55,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:57,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:01:59,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:01,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:02:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:06,590 INFO L93 Difference]: Finished difference Result 1192 states and 1704 transitions. [2024-11-14 05:02:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:02:06,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-11-14 05:02:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:06,596 INFO L225 Difference]: With dead ends: 1192 [2024-11-14 05:02:06,596 INFO L226 Difference]: Without dead ends: 662 [2024-11-14 05:02:06,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:02:06,599 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 2 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:06,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3163 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 352 Invalid, 6 Unknown, 0 Unchecked, 17.0s Time] [2024-11-14 05:02:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-14 05:02:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 653. [2024-11-14 05:02:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 453 states have (on average 1.3576158940397351) internal successors, (615), 475 states have internal predecessors, (615), 148 states have call successors, (148), 46 states have call predecessors, (148), 51 states have return successors, (163), 137 states have call predecessors, (163), 145 states have call successors, (163) [2024-11-14 05:02:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 926 transitions. [2024-11-14 05:02:06,649 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 926 transitions. Word has length 89 [2024-11-14 05:02:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:02:06,650 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 926 transitions. [2024-11-14 05:02:06,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-14 05:02:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 926 transitions. [2024-11-14 05:02:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-14 05:02:06,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:06,652 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:02:06,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:02:06,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 05:02:06,853 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:02:06,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:02:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 851012753, now seen corresponding path program 1 times [2024-11-14 05:02:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:02:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549548954] [2024-11-14 05:02:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:02:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 05:02:10,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:02:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549548954] [2024-11-14 05:02:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549548954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:02:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946566853] [2024-11-14 05:02:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:10,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:02:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:02:10,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:02:10,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdf4aa7-b2a3-4c95-aeeb-3d62dfe62769/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:02:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:12,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:02:12,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:02:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:02:12,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:02:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 05:02:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946566853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:02:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [984758] [2024-11-14 05:02:14,348 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2024-11-14 05:02:14,349 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:02:14,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:02:14,358 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:02:14,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs