./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash db09076fa9a5c529090d66c116e7ec6dbccd2fd7809e50a63c87ed8084989776 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:46:05,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:46:05,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 04:46:05,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:46:05,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:46:05,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:46:05,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:46:05,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:46:05,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:46:05,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:46:05,517 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:46:05,518 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:46:05,518 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:46:05,519 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:46:05,519 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:46:05,519 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:46:05,519 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:46:05,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:46:05,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:46:05,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:46:05,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:46:05,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:46:05,522 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:46:05,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:46:05,522 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db09076fa9a5c529090d66c116e7ec6dbccd2fd7809e50a63c87ed8084989776 [2024-11-14 04:46:05,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:46:05,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:46:05,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:46:05,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:46:05,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:46:05,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 04:46:07,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:46:08,110 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:46:08,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i [2024-11-14 04:46:08,130 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/data/dfe5ee24b/c273ae95665640bdbfdf53d5d3184440/FLAGc34421976 [2024-11-14 04:46:08,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/data/dfe5ee24b/c273ae95665640bdbfdf53d5d3184440 [2024-11-14 04:46:08,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:46:08,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:46:08,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:46:08,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:46:08,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:46:08,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:46:08" (1/1) ... [2024-11-14 04:46:08,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a872444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:08, skipping insertion in model container [2024-11-14 04:46:08,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:46:08" (1/1) ... [2024-11-14 04:46:08,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:46:08,785 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2024-11-14 04:46:08,787 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1269-1270] [2024-11-14 04:46:08,896 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_61db86d8-e695-4742-8c7f-1c91e68282d2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i[40937,40950] [2024-11-14 04:46:09,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:46:09,692 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:46:09,770 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2024-11-14 04:46:09,771 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1269-1270] [2024-11-14 04:46:09,790 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_61db86d8-e695-4742-8c7f-1c91e68282d2/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i[40937,40950] [2024-11-14 04:46:09,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:46:10,653 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:46:10,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10 WrapperNode [2024-11-14 04:46:10,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:46:10,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:46:10,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:46:10,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:46:10,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:10,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:12,094 INFO L138 Inliner]: procedures = 93, calls = 33281, calls flagged for inlining = 34, calls inlined = 31, statements flattened = 33892 [2024-11-14 04:46:12,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:46:12,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:46:12,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:46:12,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:46:12,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:12,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:12,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:12,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:46:13,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:46:13,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:46:13,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:46:13,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (1/1) ... [2024-11-14 04:46:13,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:46:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:46:13,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:46:13,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:46:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:46:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 04:46:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2024-11-14 04:46:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_unregister_n [2024-11-14 04:46:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_unregister_n [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 04:46:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 04:46:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 04:46:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:46:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:46:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure ff_validate [2024-11-14 04:46:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_validate [2024-11-14 04:46:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-14 04:46:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-14 04:46:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure ff_irq_request [2024-11-14 04:46:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_irq_request [2024-11-14 04:46:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 04:46:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 04:46:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2024-11-14 04:46:13,575 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2024-11-14 04:46:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure ff_reprogram [2024-11-14 04:46:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_reprogram [2024-11-14 04:46:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure ff_writel [2024-11-14 04:46:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_writel [2024-11-14 04:46:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:46:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:46:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:46:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure ff_readl [2024-11-14 04:46:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_readl [2024-11-14 04:46:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 04:46:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 04:46:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_register_n [2024-11-14 04:46:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_register_n [2024-11-14 04:46:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2024-11-14 04:46:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2024-11-14 04:46:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2024-11-14 04:46:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2024-11-14 04:46:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2024-11-14 04:46:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2024-11-14 04:46:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:46:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:46:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:46:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure ff_dev_create [2024-11-14 04:46:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_dev_create [2024-11-14 04:46:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:46:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-14 04:46:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-14 04:46:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-14 04:46:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:46:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:46:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-14 04:46:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-14 04:46:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-11-14 04:46:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-11-14 04:46:13,909 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:46:13,912 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:46:13,985 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 04:52:28,236 INFO L? ?]: Removed 386 outVars from TransFormulas that were not future-live. [2024-11-14 04:52:28,237 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:52:33,852 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:52:33,852 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:52:33,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:52:33 BoogieIcfgContainer [2024-11-14 04:52:33,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:52:33,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:52:33,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:52:33,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:52:33,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:46:08" (1/3) ... [2024-11-14 04:52:33,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:52:33, skipping insertion in model container [2024-11-14 04:52:33,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:46:10" (2/3) ... [2024-11-14 04:52:33,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:52:33, skipping insertion in model container [2024-11-14 04:52:33,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:52:33" (3/3) ... [2024-11-14 04:52:33,864 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i [2024-11-14 04:52:33,885 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:52:33,889 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i that has 22 procedures, 237 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-14 04:52:33,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:52:33,989 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;@7fda2c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:52:33,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:52:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 157 states have (on average 1.4394904458598725) internal successors, (226), 165 states have internal predecessors, (226), 57 states have call successors, (57), 21 states have call predecessors, (57), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-14 04:52:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:52:34,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:52:34,012 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:52:34,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:52:34,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:52:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1192443440, now seen corresponding path program 1 times [2024-11-14 04:52:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:52:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780454634] [2024-11-14 04:52:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:52:34,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:54:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:54:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:54:15,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:54:15,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780454634] [2024-11-14 04:54:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780454634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:54:15,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:54:15,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:54:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069273858] [2024-11-14 04:54:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:54:15,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:54:15,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:54:15,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:54:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:15,742 INFO L87 Difference]: Start difference. First operand has 236 states, 157 states have (on average 1.4394904458598725) internal successors, (226), 165 states have internal predecessors, (226), 57 states have call successors, (57), 21 states have call predecessors, (57), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:54:19,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:54:21,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:54:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:54:23,504 INFO L93 Difference]: Finished difference Result 466 states and 667 transitions. [2024-11-14 04:54:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:54:23,506 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2024-11-14 04:54:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:54:23,516 INFO L225 Difference]: With dead ends: 466 [2024-11-14 04:54:23,517 INFO L226 Difference]: Without dead ends: 231 [2024-11-14 04:54:23,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:54:23,524 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 5 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:54:23,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 575 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2024-11-14 04:54:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-14 04:54:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2024-11-14 04:54:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 154 states have (on average 1.396103896103896) internal successors, (215), 155 states have internal predecessors, (215), 51 states have call successors, (51), 20 states have call predecessors, (51), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-14 04:54:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2024-11-14 04:54:23,581 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 45 [2024-11-14 04:54:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:54:23,582 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2024-11-14 04:54:23,582 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:54:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2024-11-14 04:54:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:54:23,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:54:23,585 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:54:23,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:54:23,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:54:23,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:54:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1104471361, now seen corresponding path program 1 times [2024-11-14 04:54:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:54:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942454838] [2024-11-14 04:54:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:54:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:55:58,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942454838] [2024-11-14 04:55:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942454838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:58,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:55:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321160298] [2024-11-14 04:55:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:58,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:55:58,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:55:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:55:58,026 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:56:01,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:56:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:56:02,525 INFO L93 Difference]: Finished difference Result 625 states and 873 transitions. [2024-11-14 04:56:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:56:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-14 04:56:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:56:02,532 INFO L225 Difference]: With dead ends: 625 [2024-11-14 04:56:02,532 INFO L226 Difference]: Without dead ends: 412 [2024-11-14 04:56:02,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:56:02,534 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 268 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:56:02,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 528 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-14 04:56:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-14 04:56:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 409. [2024-11-14 04:56:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 284 states have (on average 1.4049295774647887) internal successors, (399), 285 states have internal predecessors, (399), 87 states have call successors, (87), 38 states have call predecessors, (87), 37 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-14 04:56:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 572 transitions. [2024-11-14 04:56:02,597 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 572 transitions. Word has length 51 [2024-11-14 04:56:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:56:02,598 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 572 transitions. [2024-11-14 04:56:02,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:56:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 572 transitions. [2024-11-14 04:56:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:56:02,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:56:02,601 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:56:02,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:56:02,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:56:02,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:56:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1834594313, now seen corresponding path program 1 times [2024-11-14 04:56:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:56:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140598495] [2024-11-14 04:56:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:56:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:57:33,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140598495] [2024-11-14 04:57:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140598495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:57:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836376129] [2024-11-14 04:57:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:33,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:57:33,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db86d8-e695-4742-8c7f-1c91e68282d2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:59:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:59:16,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 68876 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:59:16,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:59:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:59:16,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:59:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:59:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836376129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:59:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1407245019] [2024-11-14 04:59:16,645 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-14 04:59:16,645 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:59:16,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:59:16,652 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:59:16,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs