./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/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_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/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 32bit --witnessprinter.graph.data.programhash 7c7779f94f1738e754b88f9a8a8e36de7065a4e94578f4135106bd0ff9ddb13d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:01:14,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:01:14,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:01:14,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:01:14,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:01:14,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:01:14,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:01:14,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:01:14,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:01:14,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:01:14,431 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:01:14,436 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:01:14,436 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:01:14,437 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:01:14,437 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:01:14,437 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:01:14,438 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:01:14,438 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:01:14,438 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:01:14,442 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:01:14,443 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:01:14,447 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:01:14,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:01:14,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:01:14,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:01:14,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:01:14,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:01:14,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:01:14,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:01:14,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:01:14,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:01:14,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:01:14,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:01:14,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:01:14,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:01:14,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:01:14,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:01:14,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:01:14,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:01:14,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:01:14,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:01:14,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:01:14,457 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:01:14,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:01:14,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:01:14,457 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:01:14,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:01:14,458 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_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c7779f94f1738e754b88f9a8a8e36de7065a4e94578f4135106bd0ff9ddb13d [2024-11-09 05:01:14,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:01:14,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:01:14,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:01:14,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:01:14,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:01:14,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c Unable to find full path for "g++" [2024-11-09 05:01:16,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:01:16,947 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:01:16,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c [2024-11-09 05:01:16,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/data/63d16fb0f/f4846df233ee495b87ac02ea32ca981e/FLAG48468c013 [2024-11-09 05:01:17,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/data/63d16fb0f/f4846df233ee495b87ac02ea32ca981e [2024-11-09 05:01:17,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:01:17,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:01:17,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:01:17,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:01:17,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:01:17,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17, skipping insertion in model container [2024-11-09 05:01:17,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:01:17,622 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_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c[15018,15031] [2024-11-09 05:01:17,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:01:17,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:01:17,693 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-09 05:01:17,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [415] [2024-11-09 05:01:17,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [519] [2024-11-09 05:01:17,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [554] [2024-11-09 05:01:17,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [583] [2024-11-09 05:01:17,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [691] [2024-11-09 05:01:17,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [700] [2024-11-09 05:01:17,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [958] [2024-11-09 05:01:17,766 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_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c[15018,15031] [2024-11-09 05:01:17,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:01:17,817 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:01:17,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17 WrapperNode [2024-11-09 05:01:17,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:01:17,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:01:17,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:01:17,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:01:17,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,869 INFO L138 Inliner]: procedures = 58, calls = 106, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 240 [2024-11-09 05:01:17,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:01:17,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:01:17,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:01:17,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:01:17,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:01:17,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:01:17,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:01:17,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:01:17,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (1/1) ... [2024-11-09 05:01:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:01:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:17,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:01:17,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:01:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:01:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:01:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:01:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:01:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:01:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:01:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:01:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:01:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:01:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:01:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:01:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:01:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:01:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 05:01:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 05:01:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 05:01:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 05:01:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:01:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:01:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:01:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:01:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:01:18,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:01:18,067 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:01:18,407 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-09 05:01:18,408 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:01:18,543 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:01:18,543 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:01:18,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:01:18 BoogieIcfgContainer [2024-11-09 05:01:18,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:01:18,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:01:18,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:01:18,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:01:18,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:01:17" (1/3) ... [2024-11-09 05:01:18,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:01:18, skipping insertion in model container [2024-11-09 05:01:18,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:01:17" (2/3) ... [2024-11-09 05:01:18,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:01:18, skipping insertion in model container [2024-11-09 05:01:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:01:18" (3/3) ... [2024-11-09 05:01:18,558 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2024-11-09 05:01:18,577 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:01:18,578 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:01:18,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:01:18,651 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;@58e8a757, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:01:18,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:01:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 56 states have internal predecessors, (65), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 05:01:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:01:18,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:18,665 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:18,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:18,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash -817276919, now seen corresponding path program 1 times [2024-11-09 05:01:18,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:18,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032264889] [2024-11-09 05:01:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:18,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:18,847 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 05:01:18,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032264889] [2024-11-09 05:01:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032264889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:01:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837229865] [2024-11-09 05:01:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:18,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:01:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:01:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:01:18,877 INFO L87 Difference]: Start difference. First operand has 73 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 56 states have internal predecessors, (65), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:18,974 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2024-11-09 05:01:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:01:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:01:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:18,987 INFO L225 Difference]: With dead ends: 144 [2024-11-09 05:01:18,987 INFO L226 Difference]: Without dead ends: 68 [2024-11-09 05:01:18,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:01:18,997 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:19,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-09 05:01:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-09 05:01:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 52 states have internal predecessors, (57), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:01:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2024-11-09 05:01:19,057 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 12 [2024-11-09 05:01:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:19,059 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2024-11-09 05:01:19,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2024-11-09 05:01:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:01:19,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:19,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:19,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:01:19,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:19,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1864408449, now seen corresponding path program 1 times [2024-11-09 05:01:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:19,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654338333] [2024-11-09 05:01:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:19,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:19,223 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 05:01:19,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:19,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654338333] [2024-11-09 05:01:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654338333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:19,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:19,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:01:19,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829521636] [2024-11-09 05:01:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:19,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:01:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:01:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:01:19,231 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:19,305 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2024-11-09 05:01:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:01:19,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:01:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:19,309 INFO L225 Difference]: With dead ends: 108 [2024-11-09 05:01:19,309 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 05:01:19,310 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 05:01:19,313 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:19,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 111 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 05:01:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-09 05:01:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 47 states have internal predecessors, (51), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:01:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-09 05:01:19,324 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 13 [2024-11-09 05:01:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:19,324 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-09 05:01:19,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-11-09 05:01:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:01:19,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:19,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:19,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:01:19,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:19,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash -537314970, now seen corresponding path program 1 times [2024-11-09 05:01:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600652335] [2024-11-09 05:01:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:19,439 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 05:01:19,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600652335] [2024-11-09 05:01:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600652335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:19,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:19,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:01:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474892953] [2024-11-09 05:01:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:19,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:01:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:01:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:01:19,442 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:19,523 INFO L93 Difference]: Finished difference Result 176 states and 234 transitions. [2024-11-09 05:01:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:01:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 05:01:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:19,526 INFO L225 Difference]: With dead ends: 176 [2024-11-09 05:01:19,526 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 05:01:19,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:01:19,528 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 66 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:19,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 134 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 05:01:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2024-11-09 05:01:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 89 states have internal predecessors, (97), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 17 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 05:01:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2024-11-09 05:01:19,595 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 16 [2024-11-09 05:01:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:19,595 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2024-11-09 05:01:19,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2024-11-09 05:01:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:01:19,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:19,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:19,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:01:19,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:19,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1355759013, now seen corresponding path program 1 times [2024-11-09 05:01:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:19,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754176256] [2024-11-09 05:01:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:19,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:19,787 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 05:01:19,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754176256] [2024-11-09 05:01:19,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754176256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:19,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:19,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:01:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966043925] [2024-11-09 05:01:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:19,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:01:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:01:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:01:19,791 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:19,954 INFO L93 Difference]: Finished difference Result 302 states and 413 transitions. [2024-11-09 05:01:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:01:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 05:01:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:19,960 INFO L225 Difference]: With dead ends: 302 [2024-11-09 05:01:19,960 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 05:01:19,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:01:19,963 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:19,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 170 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 05:01:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-09 05:01:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 140 states have internal predecessors, (161), 34 states have call successors, (34), 30 states have call predecessors, (34), 30 states have return successors, (46), 29 states have call predecessors, (46), 34 states have call successors, (46) [2024-11-09 05:01:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2024-11-09 05:01:20,014 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 19 [2024-11-09 05:01:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:20,015 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2024-11-09 05:01:20,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2024-11-09 05:01:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:01:20,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:20,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:20,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:01:20,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:20,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash 713575124, now seen corresponding path program 1 times [2024-11-09 05:01:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140293475] [2024-11-09 05:01:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:20,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:20,331 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 05:01:20,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140293475] [2024-11-09 05:01:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140293475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:20,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:20,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:01:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287268591] [2024-11-09 05:01:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:20,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:01:20,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:01:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:01:20,337 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:01:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:20,595 INFO L93 Difference]: Finished difference Result 534 states and 690 transitions. [2024-11-09 05:01:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:01:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 05:01:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:20,601 INFO L225 Difference]: With dead ends: 534 [2024-11-09 05:01:20,602 INFO L226 Difference]: Without dead ends: 348 [2024-11-09 05:01:20,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:01:20,605 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 97 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:20,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 245 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:01:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-09 05:01:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 306. [2024-11-09 05:01:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 209 states have (on average 1.2966507177033493) internal successors, (271), 229 states have internal predecessors, (271), 47 states have call successors, (47), 43 states have call predecessors, (47), 49 states have return successors, (65), 47 states have call predecessors, (65), 47 states have call successors, (65) [2024-11-09 05:01:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2024-11-09 05:01:20,676 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 383 transitions. Word has length 33 [2024-11-09 05:01:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:20,677 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 383 transitions. [2024-11-09 05:01:20,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:01:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 383 transitions. [2024-11-09 05:01:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 05:01:20,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:20,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:20,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:01:20,683 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:20,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 882324319, now seen corresponding path program 1 times [2024-11-09 05:01:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:20,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644895693] [2024-11-09 05:01:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:20,980 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 05:01:20,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:20,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644895693] [2024-11-09 05:01:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644895693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:20,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:01:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568906612] [2024-11-09 05:01:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:20,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:01:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:01:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:01:20,985 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:01:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:21,555 INFO L93 Difference]: Finished difference Result 760 states and 967 transitions. [2024-11-09 05:01:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:01:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-09 05:01:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:21,564 INFO L225 Difference]: With dead ends: 760 [2024-11-09 05:01:21,564 INFO L226 Difference]: Without dead ends: 528 [2024-11-09 05:01:21,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:01:21,567 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 186 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:21,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 240 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:01:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-09 05:01:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 496. [2024-11-09 05:01:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 339 states have (on average 1.2861356932153392) internal successors, (436), 374 states have internal predecessors, (436), 76 states have call successors, (76), 64 states have call predecessors, (76), 80 states have return successors, (110), 80 states have call predecessors, (110), 76 states have call successors, (110) [2024-11-09 05:01:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 622 transitions. [2024-11-09 05:01:21,652 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 622 transitions. Word has length 36 [2024-11-09 05:01:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:21,652 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 622 transitions. [2024-11-09 05:01:21,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:01:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 622 transitions. [2024-11-09 05:01:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 05:01:21,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:21,655 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:01:21,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:01:21,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:21,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1890340065, now seen corresponding path program 1 times [2024-11-09 05:01:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190844272] [2024-11-09 05:01:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:01:21,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190844272] [2024-11-09 05:01:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190844272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:01:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399591035] [2024-11-09 05:01:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:21,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:01:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:01:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:01:21,721 INFO L87 Difference]: Start difference. First operand 496 states and 622 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:01:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:21,886 INFO L93 Difference]: Finished difference Result 580 states and 729 transitions. [2024-11-09 05:01:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:01:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2024-11-09 05:01:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:21,889 INFO L225 Difference]: With dead ends: 580 [2024-11-09 05:01:21,890 INFO L226 Difference]: Without dead ends: 241 [2024-11-09 05:01:21,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:01:21,893 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 97 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:21,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 130 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-09 05:01:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 224. [2024-11-09 05:01:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 151 states have (on average 1.218543046357616) internal successors, (184), 167 states have internal predecessors, (184), 35 states have call successors, (35), 30 states have call predecessors, (35), 37 states have return successors, (51), 36 states have call predecessors, (51), 35 states have call successors, (51) [2024-11-09 05:01:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 270 transitions. [2024-11-09 05:01:21,932 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 270 transitions. Word has length 53 [2024-11-09 05:01:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:21,932 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 270 transitions. [2024-11-09 05:01:21,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:01:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 270 transitions. [2024-11-09 05:01:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:01:21,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:21,936 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:21,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:01:21,936 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:21,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 43979278, now seen corresponding path program 1 times [2024-11-09 05:01:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547926992] [2024-11-09 05:01:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:01:22,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547926992] [2024-11-09 05:01:22,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547926992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:22,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482531125] [2024-11-09 05:01:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:22,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:22,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:22,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:01:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:22,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:01:22,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:01:22,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482531125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:22,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:01:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-09 05:01:22,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541844800] [2024-11-09 05:01:22,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:22,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:01:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:22,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:01:22,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:01:22,559 INFO L87 Difference]: Start difference. First operand 224 states and 270 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:01:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:22,748 INFO L93 Difference]: Finished difference Result 348 states and 427 transitions. [2024-11-09 05:01:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:01:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-09 05:01:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:22,755 INFO L225 Difference]: With dead ends: 348 [2024-11-09 05:01:22,756 INFO L226 Difference]: Without dead ends: 244 [2024-11-09 05:01:22,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:01:22,757 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 23 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:22,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 283 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:01:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-09 05:01:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 226. [2024-11-09 05:01:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 168 states have internal predecessors, (184), 35 states have call successors, (35), 30 states have call predecessors, (35), 37 states have return successors, (51), 37 states have call predecessors, (51), 35 states have call successors, (51) [2024-11-09 05:01:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 270 transitions. [2024-11-09 05:01:22,798 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 270 transitions. Word has length 67 [2024-11-09 05:01:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:22,798 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 270 transitions. [2024-11-09 05:01:22,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:01:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 270 transitions. [2024-11-09 05:01:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:01:22,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:22,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:01:22,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:01:23,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:01:23,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:23,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash -320677937, now seen corresponding path program 1 times [2024-11-09 05:01:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449434575] [2024-11-09 05:01:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:01:23,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449434575] [2024-11-09 05:01:23,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449434575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:23,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648655026] [2024-11-09 05:01:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:23,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:23,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:23,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:01:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:23,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:01:23,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:01:24,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:01:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 05:01:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648655026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:01:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928639606] [2024-11-09 05:01:24,608 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 05:01:24,608 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:01:24,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:01:24,618 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:01:24,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:01:32,045 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2024-11-09 05:01:32,158 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 18 for LOIs [2024-11-09 05:01:32,250 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 30 for LOIs [2024-11-09 05:01:32,334 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 42 for LOIs [2024-11-09 05:01:32,445 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 36 for LOIs [2024-11-09 05:01:32,461 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 13 for LOIs [2024-11-09 05:01:32,465 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:01:35,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7691#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:01:35,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:01:35,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:01:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 10] total 26 [2024-11-09 05:01:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848297986] [2024-11-09 05:01:35,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:01:35,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:01:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:01:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2857, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 05:01:35,817 INFO L87 Difference]: Start difference. First operand 226 states and 270 transitions. Second operand has 26 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-09 05:01:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:39,873 INFO L93 Difference]: Finished difference Result 842 states and 1091 transitions. [2024-11-09 05:01:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-09 05:01:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) Word has length 71 [2024-11-09 05:01:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:39,878 INFO L225 Difference]: With dead ends: 842 [2024-11-09 05:01:39,878 INFO L226 Difference]: Without dead ends: 618 [2024-11-09 05:01:39,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 172 SyntacticMatches, 11 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5248 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1795, Invalid=12011, Unknown=0, NotChecked=0, Total=13806 [2024-11-09 05:01:39,885 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1498 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:39,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 822 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1107 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 05:01:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-09 05:01:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 526. [2024-11-09 05:01:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 363 states have (on average 1.1900826446280992) internal successors, (432), 395 states have internal predecessors, (432), 75 states have call successors, (75), 64 states have call predecessors, (75), 87 states have return successors, (129), 88 states have call predecessors, (129), 75 states have call successors, (129) [2024-11-09 05:01:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 636 transitions. [2024-11-09 05:01:39,945 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 636 transitions. Word has length 71 [2024-11-09 05:01:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:39,946 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 636 transitions. [2024-11-09 05:01:39,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-09 05:01:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 636 transitions. [2024-11-09 05:01:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 05:01:39,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:39,948 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-09 05:01:39,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:40,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:40,152 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:40,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1816143662, now seen corresponding path program 1 times [2024-11-09 05:01:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873216854] [2024-11-09 05:01:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:01:40,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873216854] [2024-11-09 05:01:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873216854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947464892] [2024-11-09 05:01:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:40,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:40,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:40,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:01:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:40,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:01:40,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 78 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:01:41,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:01:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 73 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 05:01:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947464892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:01:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662062132] [2024-11-09 05:01:41,812 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-09 05:01:41,813 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:01:41,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:01:41,814 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:01:41,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:01:47,082 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2024-11-09 05:01:47,294 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 18 for LOIs [2024-11-09 05:01:47,521 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 1 for LOIs [2024-11-09 05:01:47,552 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 14 for LOIs [2024-11-09 05:01:47,586 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2024-11-09 05:01:47,591 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 7 for LOIs [2024-11-09 05:01:47,592 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 46 for LOIs [2024-11-09 05:01:47,609 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:01:51,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10629#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:01:51,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:01:51,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:01:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 28 [2024-11-09 05:01:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936329027] [2024-11-09 05:01:51,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:01:51,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:01:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:01:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3475, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 05:01:51,020 INFO L87 Difference]: Start difference. First operand 526 states and 636 transitions. Second operand has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-09 05:01:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:53,559 INFO L93 Difference]: Finished difference Result 1144 states and 1405 transitions. [2024-11-09 05:01:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 05:01:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 126 [2024-11-09 05:01:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:53,562 INFO L225 Difference]: With dead ends: 1144 [2024-11-09 05:01:53,562 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:01:53,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 328 SyntacticMatches, 7 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3052 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1248, Invalid=9464, Unknown=0, NotChecked=0, Total=10712 [2024-11-09 05:01:53,567 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 434 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:53,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 836 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:01:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:01:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:01:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:01:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:01:53,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2024-11-09 05:01:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:53,569 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:01:53,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-09 05:01:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:01:53,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:01:53,572 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:01:53,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:53,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:01:53,775 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:53,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:01:59,006 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:01:59,037 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (not (= ~waterLevel~0 1)))) (and (or (< 2 ~waterLevel~0) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not .cse0) (and (<= ~waterLevel~0 1) (or .cse1 (= |old(~pumpRunning~0)| 0)))) (or .cse0 (and .cse1 (not (= 0 ~systemActive~0)))))) Eliminated clause: (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0)))) [2024-11-09 05:01:59,047 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse1) (and .cse0 .cse2))) (or (not .cse3) .cse4 .cse2) (or .cse3 (not .cse4) .cse2))) Eliminated clause: (let ((.cse2 (= 0 ~systemActive~0))) (and (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse1) (and .cse0 .cse2))) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0))) (and (or (not .cse3) .cse4 .cse2) (or .cse3 (not .cse4) .cse2)))))) [2024-11-09 05:01:59,051 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:01:59,057 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse2 (= 0 ~systemActive~0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= |old(~waterLevel~0)| 1)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~waterLevel~0 1))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (< |old(~waterLevel~0)| 2) .cse0) (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse1 (= |old(~waterLevel~0)| 2)) .cse2 (and .cse3 .cse1))) (or (not .cse2) (and .cse4 (or .cse0 .cse5))) (or (not .cse3) (and .cse4 .cse5)))) Eliminated clause: (exists ((|old(~waterLevel~0)| Int)) (let ((.cse2 (= 0 ~systemActive~0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= |old(~waterLevel~0)| 1)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~waterLevel~0 1))) (and (or (< |old(~waterLevel~0)| 2) .cse0) (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse1 (= |old(~waterLevel~0)| 2)) .cse2 (and .cse3 .cse1))) (or (not .cse2) (and .cse4 (or .cse0 .cse5))) (or (not .cse3) (and .cse4 .cse5))))) [2024-11-09 05:01:59,063 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:01:59,066 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 0))) (or (and (<= ~waterLevel~0 1) .cse0 .cse1) (and (= 2 ~waterLevel~0) .cse0 .cse1)))) Eliminated clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= 1 ~systemActive~0))) (or (and (<= ~waterLevel~0 1) .cse0) (and (= 2 ~waterLevel~0) .cse0)))) [2024-11-09 05:01:59,071 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~waterLevel~0)| 2))) (and (or (= 2 ~waterLevel~0) (not .cse0) (not .cse1)) (let ((.cse2 (= ~pumpRunning~0 0))) (or (and .cse2 (= |old(~waterLevel~0)| 1) .cse0) (and .cse0 .cse1) (and .cse2 (= 0 ~systemActive~0)))) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)))) Eliminated clause: (exists ((|old(~waterLevel~0)| Int)) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~waterLevel~0)| 2))) (and (or (= 2 ~waterLevel~0) (not .cse0) (not .cse1)) (let ((.cse2 (= ~pumpRunning~0 0))) (or (and .cse2 (= |old(~waterLevel~0)| 1) .cse0) (and .cse0 .cse1) (and .cse2 (= 0 ~systemActive~0)))) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1))))) [2024-11-09 05:01:59,075 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:01:59,079 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= 1 ~systemActive~0))) (or (and (<= ~waterLevel~0 1) .cse0 .cse1) (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~methaneLevelCritical~0 0) .cse0 (<= ~waterLevel~0 2)))) (or (= ~pumpRunning~0 0) (<= 1 ~waterLevel~0))) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0))) (and (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1) (and .cse0 (= 2 ~waterLevel~0) .cse1) (and (= ~methaneLevelCritical~0 0) .cse1 (<= ~waterLevel~0 2)))) (or .cse0 (< 0 ~waterLevel~0)))) [2024-11-09 05:01:59,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:01:59 BoogieIcfgContainer [2024-11-09 05:01:59,087 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:01:59,088 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:01:59,088 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:01:59,088 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:01:59,089 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:01:18" (3/4) ... [2024-11-09 05:01:59,091 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:01:59,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 05:01:59,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:01:59,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:01:59,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:01:59,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:01:59,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:01:59,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:01:59,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:01:59,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 05:01:59,106 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-09 05:01:59,107 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 05:01:59,107 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:01:59,108 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:01:59,108 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:01:59,141 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning)) && ((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel))) && ((((1 == systemActive) && (\old(waterLevel) == 2)) || (0 == systemActive)) || ((\old(waterLevel) == 1) && (1 == systemActive)))) && ((0 != systemActive) || ((pumpRunning == 0) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) [2024-11-09 05:01:59,189 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning)) && ((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel))) && ((((1 == systemActive) && (\old(waterLevel) == 2)) || (0 == systemActive)) || ((\old(waterLevel) == 1) && (1 == systemActive)))) && ((0 != systemActive) || ((pumpRunning == 0) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) [2024-11-09 05:01:59,285 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:01:59,285 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:01:59,285 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:01:59,286 INFO L158 Benchmark]: Toolchain (without parser) took 42041.08ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 964.7MB). Free memory was 118.2MB in the beginning and 1.1GB in the end (delta: -961.7MB). Peak memory consumption was 524.6MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,286 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:01:59,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.80ms. Allocated memory is still 159.4MB. Free memory was 117.7MB in the beginning and 95.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.90ms. Allocated memory is still 159.4MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,287 INFO L158 Benchmark]: Boogie Preprocessor took 30.71ms. Allocated memory is still 159.4MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,287 INFO L158 Benchmark]: RCFGBuilder took 644.64ms. Allocated memory is still 159.4MB. Free memory was 91.5MB in the beginning and 104.9MB in the end (delta: -13.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,288 INFO L158 Benchmark]: TraceAbstraction took 40538.39ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 964.7MB). Free memory was 103.7MB in the beginning and 570.9MB in the end (delta: -467.2MB). Peak memory consumption was 658.9MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,295 INFO L158 Benchmark]: Witness Printer took 197.44ms. Allocated memory is still 1.1GB. Free memory was 570.9MB in the beginning and 1.1GB in the end (delta: -509.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-11-09 05:01:59,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.80ms. Allocated memory is still 159.4MB. Free memory was 117.7MB in the beginning and 95.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.90ms. Allocated memory is still 159.4MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.71ms. Allocated memory is still 159.4MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 644.64ms. Allocated memory is still 159.4MB. Free memory was 91.5MB in the beginning and 104.9MB in the end (delta: -13.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 40538.39ms. Allocated memory was 159.4MB in the beginning and 1.1GB in the end (delta: 964.7MB). Free memory was 103.7MB in the beginning and 570.9MB in the end (delta: -467.2MB). Peak memory consumption was 658.9MB. Max. memory is 16.1GB. * Witness Printer took 197.44ms. Allocated memory is still 1.1GB. Free memory was 570.9MB in the beginning and 1.1GB in the end (delta: -509.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [415] - GenericResultAtLocation [Line: 519]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [519] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [554] - GenericResultAtLocation [Line: 583]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [583] - GenericResultAtLocation [Line: 691]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [691] - GenericResultAtLocation [Line: 700]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [700] - GenericResultAtLocation [Line: 958]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [958] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 696]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.1s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2482 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2457 mSDsluCounter, 3049 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2274 mSDsCounter, 1496 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3890 IncrementalHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1496 mSolverCounterUnsat, 775 mSDtfsCounter, 3890 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 853 GetRequests, 584 SyntacticMatches, 18 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8327 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=526occurred in iteration=9, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 205 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 892 ConstructedInterpolants, 0 QuantifiedInterpolants, 2718 SizeOfPredicates, 13 NumberOfNonLiveVariables, 879 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 431/544 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 849]: Location Invariant Derived location invariant: (((((pumpRunning != 0) && (waterLevel == 1)) || (1 < waterLevel)) && (1 == systemActive)) && (waterLevel <= 2)) - InvariantResult [Line: 969]: Loop Invariant Derived loop invariant: (((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) - InvariantResult [Line: 428]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 968]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 707]: Location Invariant Derived location invariant: (((((pumpRunning == \old(pumpRunning)) && ((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel))) && ((((1 == systemActive) && (\old(waterLevel) == 2)) || (0 == systemActive)) || ((\old(waterLevel) == 1) && (1 == systemActive)))) && ((0 != systemActive) || ((pumpRunning == 0) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) - ProcedureContractResult [Line: 841]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive))) Ensures: (((pumpRunning == 0) && ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive)))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 731]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) Ensures: ((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 615]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((2 == waterLevel) && (1 == systemActive))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: ((((((waterLevel != 1) || (pumpRunning == 0)) && ((((2 == waterLevel) && (1 == systemActive)) || ((1 == systemActive) && (waterLevel == 1))) || ((pumpRunning == 0) && (0 == systemActive)))) && (((\old(methaneLevelCritical) != 0) || (1 != systemActive)) || (methaneLevelCritical != 0))) && (((methaneLevelCritical == 0) || (1 != systemActive)) || (\old(methaneLevelCritical) == 0))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 707]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) || (0 != systemActive)) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && ((pumpRunning == 0) || (\old(waterLevel) != 1))) && ((pumpRunning == 0) || (0 != systemActive))) && (((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || ((1 == systemActive) && (\old(waterLevel) == 2))) || ((\old(pumpRunning) == 0) && (0 == systemActive)))) && (((2 == waterLevel) || (\old(waterLevel) != 2)) || (((\old(pumpRunning) != 0) && (pumpRunning == 0)) && (waterLevel == 1)))) && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 418]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 739]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: ((pumpRunning == 0) && (((waterLevel <= 1) && (1 == systemActive)) || ((2 == waterLevel) && (1 == systemActive)))) Ensures: ((((((waterLevel <= 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 603]: Procedure Contract for waterRise Derived contract for procedure waterRise. Ensures: (((((1 < waterLevel) || ((\old(waterLevel) != 1) && (\old(waterLevel) <= 1))) && (((((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive)) || ((1 == systemActive) && (\old(waterLevel) == 2))) || ((pumpRunning == 0) && (0 == systemActive)))) && ((2 == waterLevel) || (1 != systemActive))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 765]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2))) && ((pumpRunning == 0) || (0 < waterLevel))) Ensures: (((((((waterLevel <= 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((((methaneLevelCritical == 0) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) && (waterLevel <= 2))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 849]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((1 == systemActive) && (waterLevel <= 2)) && (((pumpRunning != 0) && (waterLevel == 1)) || (2 == waterLevel))) Ensures: (((((methaneLevelCritical == \result) && (1 == systemActive)) && (waterLevel <= 2)) && (((pumpRunning != 0) && (waterLevel == 1)) || (2 == waterLevel))) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:01:59,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a21c8c81-b9eb-441d-ac19-7112cbda8ff9/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE