./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/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_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 05:03:19,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:03:19,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:03:19,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:03:19,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:03:19,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:03:19,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:03:19,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:03:19,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:03:19,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:03:19,382 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:03:19,383 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:03:19,383 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:03:19,384 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:03:19,384 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:03:19,385 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:03:19,388 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:03:19,392 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:03:19,392 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:03:19,393 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:03:19,393 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:03:19,397 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:03:19,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:03:19,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:03:19,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:03:19,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:03:19,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:03:19,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:03:19,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:03:19,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:03:19,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:03:19,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:03:19,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:03:19,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:03:19,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:03:19,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:03:19,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:03:19,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:03:19,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:03:19,407 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:03:19,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:03:19,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:03:19,408 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:03:19,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:03:19,410 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 [2024-11-09 05:03:19,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:03:19,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:03:19,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:03:19,785 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:03:19,786 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:03:19,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/../../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++" [2024-11-09 05:03:22,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:03:22,619 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:03:22,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/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 [2024-11-09 05:03:22,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/data/4c5f44fa1/6efb1f4ea9ac4f298c29837299e8af6a/FLAGdf388e39b [2024-11-09 05:03:23,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/data/4c5f44fa1/6efb1f4ea9ac4f298c29837299e8af6a [2024-11-09 05:03:23,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:03:23,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:03:23,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:03:23,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:03:23,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:03:23,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:03:23" (1/1) ... [2024-11-09 05:03:23,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a464a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:23, skipping insertion in model container [2024-11-09 05:03:23,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:03:23" (1/1) ... [2024-11-09 05:03:23,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:03:24,220 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_79d1a959-660b-45c8-a3cc-4885600235ac/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] [2024-11-09 05:03:24,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:03:24,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:03:24,942 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_79d1a959-660b-45c8-a3cc-4885600235ac/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] [2024-11-09 05:03:25,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:03:25,217 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:03:25,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25 WrapperNode [2024-11-09 05:03:25,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:03:25,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:03:25,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:03:25,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:03:25,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,443 INFO L138 Inliner]: procedures = 113, calls = 1240, calls flagged for inlining = 52, calls inlined = 49, statements flattened = 2688 [2024-11-09 05:03:25,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:03:25,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:03:25,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:03:25,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:03:25,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:03:25,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:03:25,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:03:25,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:03:25,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (1/1) ... [2024-11-09 05:03:25,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:03:25,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:25,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:03:25,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:03:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-11-09 05:03:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-11-09 05:03:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:03:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:03:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 05:03:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 05:03:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:03:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-09 05:03:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-09 05:03:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 05:03:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 05:03:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2024-11-09 05:03:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2024-11-09 05:03:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 05:03:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 05:03:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:03:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 05:03:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 05:03:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-11-09 05:03:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-11-09 05:03:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 05:03:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 05:03:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:03:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:03:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:03:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-09 05:03:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-09 05:03:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure gtco_disconnect [2024-11-09 05:03:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure gtco_disconnect [2024-11-09 05:03:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2024-11-09 05:03:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2024-11-09 05:03:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:03:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-09 05:03:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-09 05:03:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:03:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:03:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2024-11-09 05:03:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2024-11-09 05:03:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-09 05:03:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-09 05:03:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:03:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:03:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2024-11-09 05:03:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2024-11-09 05:03:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-09 05:03:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-09 05:03:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-09 05:03:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-09 05:03:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-09 05:03:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-09 05:03:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:03:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-09 05:03:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-09 05:03:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:03:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:03:26,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:03:26,418 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:03:26,568 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 05:03:26,682 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-09 05:03:34,083 INFO L? ?]: Removed 842 outVars from TransFormulas that were not future-live. [2024-11-09 05:03:34,083 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:03:34,645 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:03:34,645 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 05:03:34,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:34 BoogieIcfgContainer [2024-11-09 05:03:34,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:03:34,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:03:34,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:03:34,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:03:34,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:03:23" (1/3) ... [2024-11-09 05:03:34,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ba16a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:34, skipping insertion in model container [2024-11-09 05:03:34,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:25" (2/3) ... [2024-11-09 05:03:34,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ba16a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:34, skipping insertion in model container [2024-11-09 05:03:34,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:34" (3/3) ... [2024-11-09 05:03:34,656 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2024-11-09 05:03:34,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:03:34,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:03:34,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:03:34,790 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;@2318295a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:03:34,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:03:34,797 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) [2024-11-09 05:03:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:03:34,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:34,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:34,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:34,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1077540093, now seen corresponding path program 1 times [2024-11-09 05:03:34,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:34,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790792688] [2024-11-09 05:03:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:34,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:03:38,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790792688] [2024-11-09 05:03:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790792688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:38,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:38,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106764387] [2024-11-09 05:03:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:38,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:03:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:03:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:03:38,895 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) [2024-11-09 05:03:40,992 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 [] [2024-11-09 05:03:43,028 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 [] [2024-11-09 05:03:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:45,077 INFO L93 Difference]: Finished difference Result 1192 states and 1842 transitions. [2024-11-09 05:03:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:03:45,080 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 [2024-11-09 05:03:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:45,101 INFO L225 Difference]: With dead ends: 1192 [2024-11-09 05:03:45,102 INFO L226 Difference]: Without dead ends: 775 [2024-11-09 05:03:45,109 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 [2024-11-09 05:03:45,112 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 572 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:45,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1089 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 05:03:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-09 05:03:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2024-11-09 05:03:45,273 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) [2024-11-09 05:03:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1158 transitions. [2024-11-09 05:03:45,287 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1158 transitions. Word has length 17 [2024-11-09 05:03:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:45,289 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1158 transitions. [2024-11-09 05:03:45,289 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) [2024-11-09 05:03:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1158 transitions. [2024-11-09 05:03:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:03:45,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:45,292 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] [2024-11-09 05:03:45,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:03:45,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:45,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 608228010, now seen corresponding path program 1 times [2024-11-09 05:03:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113510095] [2024-11-09 05:03:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:03:48,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113510095] [2024-11-09 05:03:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113510095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:48,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025369524] [2024-11-09 05:03:48,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:48,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:03:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:03:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:03:48,638 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) [2024-11-09 05:03:50,693 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 [] [2024-11-09 05:03:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:52,306 INFO L93 Difference]: Finished difference Result 967 states and 1400 transitions. [2024-11-09 05:03:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:03:52,308 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 [2024-11-09 05:03:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:52,317 INFO L225 Difference]: With dead ends: 967 [2024-11-09 05:03:52,318 INFO L226 Difference]: Without dead ends: 964 [2024-11-09 05:03:52,319 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 [2024-11-09 05:03:52,320 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 122 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:52,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1065 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 05:03:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-09 05:03:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 952. [2024-11-09 05:03:52,401 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) [2024-11-09 05:03:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1383 transitions. [2024-11-09 05:03:52,410 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1383 transitions. Word has length 25 [2024-11-09 05:03:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:52,411 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1383 transitions. [2024-11-09 05:03:52,411 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) [2024-11-09 05:03:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1383 transitions. [2024-11-09 05:03:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:03:52,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:52,413 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] [2024-11-09 05:03:52,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:03:52,414 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:52,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1674931345, now seen corresponding path program 1 times [2024-11-09 05:03:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:52,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899822063] [2024-11-09 05:03:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:03:54,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899822063] [2024-11-09 05:03:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899822063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:54,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103830306] [2024-11-09 05:03:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:54,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:03:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:03:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:03:54,908 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) [2024-11-09 05:03:56,959 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 [] [2024-11-09 05:03:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:58,662 INFO L93 Difference]: Finished difference Result 2063 states and 2963 transitions. [2024-11-09 05:03:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:03:58,664 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 [2024-11-09 05:03:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:58,672 INFO L225 Difference]: With dead ends: 2063 [2024-11-09 05:03:58,673 INFO L226 Difference]: Without dead ends: 1120 [2024-11-09 05:03:58,676 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 [2024-11-09 05:03:58,678 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 104 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:58,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1063 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 05:03:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-11-09 05:03:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1110. [2024-11-09 05:03:58,752 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) [2024-11-09 05:03:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1577 transitions. [2024-11-09 05:03:58,761 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1577 transitions. Word has length 26 [2024-11-09 05:03:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:58,762 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1577 transitions. [2024-11-09 05:03:58,762 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) [2024-11-09 05:03:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1577 transitions. [2024-11-09 05:03:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:03:58,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:58,764 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] [2024-11-09 05:03:58,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:03:58,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:58,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 383001229, now seen corresponding path program 1 times [2024-11-09 05:03:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164923000] [2024-11-09 05:03:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:04:00,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:00,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164923000] [2024-11-09 05:04:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164923000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:00,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:04:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221547079] [2024-11-09 05:04:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:00,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:04:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:04:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:04:00,803 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) [2024-11-09 05:04:02,856 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 [] [2024-11-09 05:04:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:04,863 INFO L93 Difference]: Finished difference Result 1118 states and 1584 transitions. [2024-11-09 05:04:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:04:04,865 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 [2024-11-09 05:04:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:04,874 INFO L225 Difference]: With dead ends: 1118 [2024-11-09 05:04:04,874 INFO L226 Difference]: Without dead ends: 1115 [2024-11-09 05:04:04,875 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 [2024-11-09 05:04:04,876 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 101 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:04,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1060 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 05:04:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-09 05:04:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1111. [2024-11-09 05:04:04,940 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) [2024-11-09 05:04:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1578 transitions. [2024-11-09 05:04:04,948 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1578 transitions. Word has length 27 [2024-11-09 05:04:04,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:04,949 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1578 transitions. [2024-11-09 05:04:04,949 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) [2024-11-09 05:04:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1578 transitions. [2024-11-09 05:04:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:04:04,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:04,955 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] [2024-11-09 05:04:04,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:04:04,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1012121836, now seen corresponding path program 1 times [2024-11-09 05:04:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:04,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999980473] [2024-11-09 05:04:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:04:07,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999980473] [2024-11-09 05:04:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999980473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:07,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:04:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652258875] [2024-11-09 05:04:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:07,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:04:07,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:04:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:04:07,248 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) [2024-11-09 05:04:09,302 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 [] [2024-11-09 05:04:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:10,203 INFO L93 Difference]: Finished difference Result 1113 states and 1579 transitions. [2024-11-09 05:04:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:04:10,205 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 [2024-11-09 05:04:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:10,213 INFO L225 Difference]: With dead ends: 1113 [2024-11-09 05:04:10,213 INFO L226 Difference]: Without dead ends: 1110 [2024-11-09 05:04:10,214 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 [2024-11-09 05:04:10,216 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 574 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:10,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 532 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 05:04:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-09 05:04:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2024-11-09 05:04:10,289 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) [2024-11-09 05:04:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1576 transitions. [2024-11-09 05:04:10,297 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1576 transitions. Word has length 28 [2024-11-09 05:04:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:10,297 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1576 transitions. [2024-11-09 05:04:10,297 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) [2024-11-09 05:04:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1576 transitions. [2024-11-09 05:04:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:04:10,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:10,302 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] [2024-11-09 05:04:10,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:04:10,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:10,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1311259024, now seen corresponding path program 1 times [2024-11-09 05:04:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766449341] [2024-11-09 05:04:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:04:12,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:12,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766449341] [2024-11-09 05:04:12,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766449341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:12,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:12,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:04:12,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970781651] [2024-11-09 05:04:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:12,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:04:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:04:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:04:12,099 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) [2024-11-09 05:04:14,152 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 [] [2024-11-09 05:04:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:15,193 INFO L93 Difference]: Finished difference Result 1112 states and 1577 transitions. [2024-11-09 05:04:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:04:15,194 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 [2024-11-09 05:04:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:15,202 INFO L225 Difference]: With dead ends: 1112 [2024-11-09 05:04:15,203 INFO L226 Difference]: Without dead ends: 1103 [2024-11-09 05:04:15,203 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 [2024-11-09 05:04:15,206 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 571 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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 [2024-11-09 05:04:15,206 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] [2024-11-09 05:04:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2024-11-09 05:04:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2024-11-09 05:04:15,266 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) [2024-11-09 05:04:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1566 transitions. [2024-11-09 05:04:15,272 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1566 transitions. Word has length 29 [2024-11-09 05:04:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:15,273 INFO L471 AbstractCegarLoop]: Abstraction has 1103 states and 1566 transitions. [2024-11-09 05:04:15,273 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) [2024-11-09 05:04:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1566 transitions. [2024-11-09 05:04:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 05:04:15,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:15,277 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] [2024-11-09 05:04:15,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:04:15,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:15,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -446397943, now seen corresponding path program 1 times [2024-11-09 05:04:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133112690] [2024-11-09 05:04:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 05:04:17,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133112690] [2024-11-09 05:04:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133112690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:17,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:04:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542892584] [2024-11-09 05:04:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:17,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:04:17,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:04:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:04:17,371 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) [2024-11-09 05:04:19,423 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 [] [2024-11-09 05:04:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:21,126 INFO L93 Difference]: Finished difference Result 1740 states and 2467 transitions. [2024-11-09 05:04:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:04:21,128 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 [2024-11-09 05:04:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:21,133 INFO L225 Difference]: With dead ends: 1740 [2024-11-09 05:04:21,133 INFO L226 Difference]: Without dead ends: 646 [2024-11-09 05:04:21,137 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 [2024-11-09 05:04:21,138 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 [2024-11-09 05:04:21,139 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] [2024-11-09 05:04:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-09 05:04:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 635. [2024-11-09 05:04:21,180 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) [2024-11-09 05:04:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 896 transitions. [2024-11-09 05:04:21,185 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 896 transitions. Word has length 83 [2024-11-09 05:04:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:21,186 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 896 transitions. [2024-11-09 05:04:21,186 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) [2024-11-09 05:04:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 896 transitions. [2024-11-09 05:04:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 05:04:21,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:21,188 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] [2024-11-09 05:04:21,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:04:21,189 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:21,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash -861622322, now seen corresponding path program 1 times [2024-11-09 05:04:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:21,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471314521] [2024-11-09 05:04:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:04:24,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471314521] [2024-11-09 05:04:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471314521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225277403] [2024-11-09 05:04:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:24,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:24,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:24,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:04:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:28,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:04:28,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:04:28,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:04:28,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225277403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:28,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:04:28,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-09 05:04:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224862007] [2024-11-09 05:04:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:28,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:04:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:04:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:04:28,532 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) [2024-11-09 05:04:30,588 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 [] [2024-11-09 05:04:32,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:04:34,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:04:36,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:04:38,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:04:40,729 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 [] [2024-11-09 05:04:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:44,805 INFO L93 Difference]: Finished difference Result 1192 states and 1704 transitions. [2024-11-09 05:04:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:04:44,807 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 [2024-11-09 05:04:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:44,812 INFO L225 Difference]: With dead ends: 1192 [2024-11-09 05:04:44,812 INFO L226 Difference]: Without dead ends: 662 [2024-11-09 05:04:44,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:04:44,815 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 2 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:44,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3169 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 352 Invalid, 6 Unknown, 0 Unchecked, 16.2s Time] [2024-11-09 05:04:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-09 05:04:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 653. [2024-11-09 05:04:44,860 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) [2024-11-09 05:04:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 926 transitions. [2024-11-09 05:04:44,865 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 926 transitions. Word has length 89 [2024-11-09 05:04:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:44,866 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 926 transitions. [2024-11-09 05:04:44,866 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) [2024-11-09 05:04:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 926 transitions. [2024-11-09 05:04:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:04:44,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:44,869 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] [2024-11-09 05:04:44,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:04:45,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:45,070 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:45,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash 851012753, now seen corresponding path program 1 times [2024-11-09 05:04:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131798369] [2024-11-09 05:04:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:45,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:04:48,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131798369] [2024-11-09 05:04:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131798369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989035323] [2024-11-09 05:04:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:48,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:48,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d1a959-660b-45c8-a3cc-4885600235ac/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:04:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:51,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:04:51,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:04:52,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:04:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:04:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989035323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:04:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671132343] [2024-11-09 05:04:53,579 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2024-11-09 05:04:53,580 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:04:53,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:04:53,591 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:04:53,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs