./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire --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 ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:30,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:30,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:14:30,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:30,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:31,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:31,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:31,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:31,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:31,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:31,016 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:31,017 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:31,017 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:31,018 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:31,018 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:31,019 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:31,019 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:31,020 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:31,020 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:31,021 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:31,022 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:31,022 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:31,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:31,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:31,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:31,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:31,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:31,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:31,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:31,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:31,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:31,027 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:31,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:31,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:31,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:31,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:31,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:31,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:31,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:31,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:31,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:31,031 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:31,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:31,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:31,033 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:31,033 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:31,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:31,034 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_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d [2023-11-23 21:14:31,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:31,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:31,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:31,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:31,299 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:31,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-11-23 21:14:34,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:34,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:34,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-11-23 21:14:34,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/data/0479c238e/1e81f083aa724a4985d384a4b883240c/FLAG898d1d303 [2023-11-23 21:14:35,002 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/data/0479c238e/1e81f083aa724a4985d384a4b883240c [2023-11-23 21:14:35,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:35,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:35,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:35,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:35,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:35,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a77086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35, skipping insertion in model container [2023-11-23 21:14:35,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:35,271 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-11-23 21:14:35,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:35,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:35,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2023-11-23 21:14:35,420 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] [2023-11-23 21:14:35,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] [2023-11-23 21:14:35,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] [2023-11-23 21:14:35,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] [2023-11-23 21:14:35,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] [2023-11-23 21:14:35,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] [2023-11-23 21:14:35,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] [2023-11-23 21:14:35,459 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-11-23 21:14:35,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:35,551 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:35,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35 WrapperNode [2023-11-23 21:14:35,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:35,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:35,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:35,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:35,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,633 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 206 [2023-11-23 21:14:35,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:35,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:35,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:35,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:35,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:35,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:35,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:35,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:35,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (1/1) ... [2023-11-23 21:14:35,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:35,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:35,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 21:14:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 21:14:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:14:35,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:14:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:14:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:14:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 21:14:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 21:14:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-23 21:14:35,796 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-23 21:14:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-23 21:14:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-23 21:14:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 21:14:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 21:14:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:35,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:35,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:36,260 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:36,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:36,432 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:14:36,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:36 BoogieIcfgContainer [2023-11-23 21:14:36,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:36,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:36,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:36,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:36,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:35" (1/3) ... [2023-11-23 21:14:36,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30c25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:36, skipping insertion in model container [2023-11-23 21:14:36,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:35" (2/3) ... [2023-11-23 21:14:36,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30c25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:36, skipping insertion in model container [2023-11-23 21:14:36,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:36" (3/3) ... [2023-11-23 21:14:36,452 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2023-11-23 21:14:36,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:36,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:36,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:36,551 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a027381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:36,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:14:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:14:36,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:36,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:36,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash 706846516, now seen corresponding path program 1 times [2023-11-23 21:14:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587534659] [2023-11-23 21:14:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:36,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587534659] [2023-11-23 21:14:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587534659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:36,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:36,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:14:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254201413] [2023-11-23 21:14:36,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:14:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:14:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:14:36,849 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) 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) [2023-11-23 21:14:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:36,921 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-11-23 21:14:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:14:36,929 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 [2023-11-23 21:14:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:36,940 INFO L225 Difference]: With dead ends: 112 [2023-11-23 21:14:36,941 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 21:14:36,945 INFO L412 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 [2023-11-23 21:14:36,949 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:36,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:14:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 21:14:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-23 21:14:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:14:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-11-23 21:14:37,021 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 12 [2023-11-23 21:14:37,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:37,022 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-11-23 21:14:37,023 INFO L496 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) [2023-11-23 21:14:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-23 21:14:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:14:37,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:37,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:37,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:14:37,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:37,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -799333322, now seen corresponding path program 1 times [2023-11-23 21:14:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090430811] [2023-11-23 21:14:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:37,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090430811] [2023-11-23 21:14:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090430811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:37,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:37,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:37,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832942863] [2023-11-23 21:14:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:37,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:37,203 INFO L87 Difference]: Start difference. First operand 52 states and 66 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) [2023-11-23 21:14:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:37,251 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-11-23 21:14:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:37,252 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 [2023-11-23 21:14:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:37,255 INFO L225 Difference]: With dead ends: 81 [2023-11-23 21:14:37,255 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 21:14:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:37,261 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:37,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:14:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 21:14:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 21:14:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:14:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-23 21:14:37,284 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 13 [2023-11-23 21:14:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:37,285 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-23 21:14:37,285 INFO L496 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) [2023-11-23 21:14:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-23 21:14:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:14:37,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:37,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:14:37,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:37,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash 199169726, now seen corresponding path program 1 times [2023-11-23 21:14:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869524152] [2023-11-23 21:14:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:37,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:37,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869524152] [2023-11-23 21:14:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869524152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:37,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:14:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589604460] [2023-11-23 21:14:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:37,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:37,438 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-23 21:14:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:37,474 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-11-23 21:14:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 15 [2023-11-23 21:14:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:37,476 INFO L225 Difference]: With dead ends: 86 [2023-11-23 21:14:37,476 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 21:14:37,477 INFO L412 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 [2023-11-23 21:14:37,479 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:37,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:14:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 21:14:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 21:14:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:14:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-11-23 21:14:37,489 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 15 [2023-11-23 21:14:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:37,489 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-11-23 21:14:37,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-23 21:14:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-11-23 21:14:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:14:37,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:37,491 INFO L195 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] [2023-11-23 21:14:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:14:37,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:37,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash 685855569, now seen corresponding path program 1 times [2023-11-23 21:14:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593726240] [2023-11-23 21:14:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:37,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:37,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593726240] [2023-11-23 21:14:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593726240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:37,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968709798] [2023-11-23 21:14:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:37,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:37,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:37,663 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:14:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:37,765 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-11-23 21:14:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-23 21:14:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:37,770 INFO L225 Difference]: With dead ends: 118 [2023-11-23 21:14:37,771 INFO L226 Difference]: Without dead ends: 76 [2023-11-23 21:14:37,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:37,776 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:37,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:14:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-23 21:14:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-23 21:14:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 56 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-23 21:14:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-11-23 21:14:37,806 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 22 [2023-11-23 21:14:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:37,806 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-11-23 21:14:37,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:14:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-11-23 21:14:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:14:37,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:37,811 INFO L195 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] [2023-11-23 21:14:37,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:14:37,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:37,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1970980335, now seen corresponding path program 1 times [2023-11-23 21:14:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:37,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900210763] [2023-11-23 21:14:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:38,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900210763] [2023-11-23 21:14:38,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900210763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:38,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:38,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:14:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594447854] [2023-11-23 21:14:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:38,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:14:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:14:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:14:38,144 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:14:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:38,297 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2023-11-23 21:14:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:14:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-23 21:14:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:38,301 INFO L225 Difference]: With dead ends: 201 [2023-11-23 21:14:38,302 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 21:14:38,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:14:38,305 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 49 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:38,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:14:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 21:14:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2023-11-23 21:14:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 86 states have internal predecessors, (91), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-23 21:14:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2023-11-23 21:14:38,343 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 26 [2023-11-23 21:14:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:38,343 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2023-11-23 21:14:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:14:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2023-11-23 21:14:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:14:38,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:38,350 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:14:38,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:14:38,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:38,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash 957732786, now seen corresponding path program 1 times [2023-11-23 21:14:38,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:38,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044921676] [2023-11-23 21:14:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:38,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:14:38,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:38,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044921676] [2023-11-23 21:14:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044921676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:38,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:14:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069944572] [2023-11-23 21:14:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:38,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:14:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:14:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:14:38,524 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:14:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:38,660 INFO L93 Difference]: Finished difference Result 301 states and 356 transitions. [2023-11-23 21:14:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:14:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-23 21:14:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:38,663 INFO L225 Difference]: With dead ends: 301 [2023-11-23 21:14:38,663 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 21:14:38,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:14:38,665 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:38,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 180 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:14:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 21:14:38,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 217. [2023-11-23 21:14:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 161 states have internal predecessors, (175), 33 states have call successors, (33), 33 states have call predecessors, (33), 37 states have return successors, (45), 35 states have call predecessors, (45), 33 states have call successors, (45) [2023-11-23 21:14:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2023-11-23 21:14:38,699 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 47 [2023-11-23 21:14:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:38,699 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2023-11-23 21:14:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:14:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2023-11-23 21:14:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:14:38,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:38,702 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:14:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:14:38,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash 364006996, now seen corresponding path program 1 times [2023-11-23 21:14:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449776759] [2023-11-23 21:14:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:14:39,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449776759] [2023-11-23 21:14:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449776759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023907489] [2023-11-23 21:14:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:39,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:39,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:14:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:39,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:14:39,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:39,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023907489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:39,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:14:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-11-23 21:14:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138534215] [2023-11-23 21:14:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:39,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:14:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:14:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:14:39,692 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 21:14:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:40,256 INFO L93 Difference]: Finished difference Result 483 states and 585 transitions. [2023-11-23 21:14:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:14:40,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2023-11-23 21:14:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:40,263 INFO L225 Difference]: With dead ends: 483 [2023-11-23 21:14:40,263 INFO L226 Difference]: Without dead ends: 325 [2023-11-23 21:14:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:14:40,266 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 137 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:40,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 119 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:14:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-23 21:14:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 292. [2023-11-23 21:14:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 204 states have (on average 1.196078431372549) internal successors, (244), 217 states have internal predecessors, (244), 43 states have call successors, (43), 43 states have call predecessors, (43), 44 states have return successors, (60), 40 states have call predecessors, (60), 43 states have call successors, (60) [2023-11-23 21:14:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 347 transitions. [2023-11-23 21:14:40,336 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 347 transitions. Word has length 50 [2023-11-23 21:14:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:40,338 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 347 transitions. [2023-11-23 21:14:40,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 21:14:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 347 transitions. [2023-11-23 21:14:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:14:40,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:40,341 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:14:40,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:40,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:40,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:40,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash -798308888, now seen corresponding path program 1 times [2023-11-23 21:14:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:40,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017415829] [2023-11-23 21:14:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:14:40,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017415829] [2023-11-23 21:14:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017415829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843266342] [2023-11-23 21:14:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:40,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:40,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:40,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:14:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:41,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:14:41,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:41,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:14:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:14:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843266342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:14:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091382368] [2023-11-23 21:14:42,029 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-23 21:14:42,029 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:14:42,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:14:42,039 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:14:42,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:14:45,313 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 17 for LOIs [2023-11-23 21:14:45,318 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-11-23 21:14:45,538 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 27 for LOIs [2023-11-23 21:14:45,703 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 32 for LOIs [2023-11-23 21:14:45,724 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 32 for LOIs [2023-11-23 21:14:45,735 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:14:48,855 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3594#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (<= 0 ~methaneLevelCritical~0) (<= ~methaneLevelCritical~0 2147483647) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-11-23 21:14:48,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:14:48,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:14:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 26 [2023-11-23 21:14:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756124938] [2023-11-23 21:14:48,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:14:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 21:14:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 21:14:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=3060, Unknown=0, NotChecked=0, Total=3422 [2023-11-23 21:14:48,861 INFO L87 Difference]: Start difference. First operand 292 states and 347 transitions. Second operand has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-23 21:14:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:53,468 INFO L93 Difference]: Finished difference Result 1332 states and 1756 transitions. [2023-11-23 21:14:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-23 21:14:53,469 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) Word has length 53 [2023-11-23 21:14:53,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:53,478 INFO L225 Difference]: With dead ends: 1332 [2023-11-23 21:14:53,478 INFO L226 Difference]: Without dead ends: 1146 [2023-11-23 21:14:53,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8078 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3114, Invalid=18056, Unknown=0, NotChecked=0, Total=21170 [2023-11-23 21:14:53,490 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1257 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 953 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:53,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 363 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [953 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:14:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-11-23 21:14:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 763. [2023-11-23 21:14:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 538 states have (on average 1.1691449814126393) internal successors, (629), 572 states have internal predecessors, (629), 111 states have call successors, (111), 103 states have call predecessors, (111), 113 states have return successors, (159), 110 states have call predecessors, (159), 111 states have call successors, (159) [2023-11-23 21:14:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 899 transitions. [2023-11-23 21:14:53,587 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 899 transitions. Word has length 53 [2023-11-23 21:14:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:53,588 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 899 transitions. [2023-11-23 21:14:53,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-23 21:14:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 899 transitions. [2023-11-23 21:14:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:14:53,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:53,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 21:14:53,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:53,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:53,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -891943655, now seen corresponding path program 1 times [2023-11-23 21:14:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333270862] [2023-11-23 21:14:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:14:54,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333270862] [2023-11-23 21:14:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333270862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207291730] [2023-11-23 21:14:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:54,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:54,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:14:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:54,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:14:54,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 21:14:54,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207291730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:54,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:14:54,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-23 21:14:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903503904] [2023-11-23 21:14:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:54,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:14:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:14:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:14:54,211 INFO L87 Difference]: Start difference. First operand 763 states and 899 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:14:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:54,342 INFO L93 Difference]: Finished difference Result 794 states and 934 transitions. [2023-11-23 21:14:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:14:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2023-11-23 21:14:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:54,350 INFO L225 Difference]: With dead ends: 794 [2023-11-23 21:14:54,350 INFO L226 Difference]: Without dead ends: 792 [2023-11-23 21:14:54,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:14:54,354 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:54,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 107 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:14:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-11-23 21:14:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 763. [2023-11-23 21:14:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 538 states have (on average 1.1598513011152416) internal successors, (624), 572 states have internal predecessors, (624), 111 states have call successors, (111), 103 states have call predecessors, (111), 113 states have return successors, (159), 110 states have call predecessors, (159), 111 states have call successors, (159) [2023-11-23 21:14:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 894 transitions. [2023-11-23 21:14:54,441 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 894 transitions. Word has length 81 [2023-11-23 21:14:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:54,442 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 894 transitions. [2023-11-23 21:14:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:14:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 894 transitions. [2023-11-23 21:14:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:14:54,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:54,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 21:14:54,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:54,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 21:14:54,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:54,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1211728182, now seen corresponding path program 1 times [2023-11-23 21:14:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841885029] [2023-11-23 21:14:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:14:55,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841885029] [2023-11-23 21:14:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841885029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:55,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098705936] [2023-11-23 21:14:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:55,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:55,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:55,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:55,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:14:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:55,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:14:55,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:14:55,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:14:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 21:14:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098705936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:14:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975684477] [2023-11-23 21:14:56,219 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-23 21:14:56,219 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:14:56,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:14:56,220 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:14:56,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:14:59,247 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2023-11-23 21:14:59,358 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-11-23 21:14:59,480 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 36 for LOIs [2023-11-23 21:14:59,645 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 42 for LOIs [2023-11-23 21:14:59,672 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 11 for LOIs [2023-11-23 21:14:59,673 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:15:03,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9409#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-11-23 21:15:03,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:15:03,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:15:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 28 [2023-11-23 21:15:03,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131616827] [2023-11-23 21:15:03,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:15:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 21:15:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 21:15:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3421, Unknown=0, NotChecked=0, Total=3782 [2023-11-23 21:15:03,927 INFO L87 Difference]: Start difference. First operand 763 states and 894 transitions. Second operand has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-23 21:15:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:10,266 INFO L93 Difference]: Finished difference Result 1672 states and 2055 transitions. [2023-11-23 21:15:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-23 21:15:10,267 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) Word has length 83 [2023-11-23 21:15:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:10,276 INFO L225 Difference]: With dead ends: 1672 [2023-11-23 21:15:10,276 INFO L226 Difference]: Without dead ends: 1151 [2023-11-23 21:15:10,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11233 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4192, Invalid=27670, Unknown=0, NotChecked=0, Total=31862 [2023-11-23 21:15:10,291 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1400 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:10,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 503 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:15:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-11-23 21:15:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 850. [2023-11-23 21:15:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 590 states have (on average 1.147457627118644) internal successors, (677), 625 states have internal predecessors, (677), 129 states have call successors, (129), 126 states have call predecessors, (129), 130 states have return successors, (168), 126 states have call predecessors, (168), 129 states have call successors, (168) [2023-11-23 21:15:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 974 transitions. [2023-11-23 21:15:10,418 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 974 transitions. Word has length 83 [2023-11-23 21:15:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 974 transitions. [2023-11-23 21:15:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-23 21:15:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 974 transitions. [2023-11-23 21:15:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 21:15:10,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:10,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-23 21:15:10,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:15:10,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:10,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1688950344, now seen corresponding path program 2 times [2023-11-23 21:15:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:10,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079641549] [2023-11-23 21:15:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:10,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:15:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:15:10,744 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:15:10,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:15:10,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:15:10,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:15:10,750 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:10,755 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:15:10,840 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-11-23 21:15:10,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,845 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,845 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,846 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,846 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,848 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-23 21:15:10,850 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,852 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,854 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-23 21:15:10,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:15:10 BoogieIcfgContainer [2023-11-23 21:15:10,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:15:10,901 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:15:10,901 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:15:10,901 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:15:10,902 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:36" (3/4) ... [2023-11-23 21:15:10,904 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:15:10,933 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,937 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-11-23 21:15:10,940 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,940 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,941 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,941 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,941 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,942 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-23 21:15:10,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-23 21:15:10,948 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-23 21:15:11,052 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:15:11,053 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:15:11,054 INFO L158 Benchmark]: Toolchain (without parser) took 36047.23ms. Allocated memory was 153.1MB in the beginning and 660.6MB in the end (delta: 507.5MB). Free memory was 105.1MB in the beginning and 483.4MB in the end (delta: -378.3MB). Peak memory consumption was 129.9MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,054 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 153.1MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:11,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.41ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 85.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.45ms. Allocated memory is still 153.1MB. Free memory was 85.8MB in the beginning and 83.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,055 INFO L158 Benchmark]: Boogie Preprocessor took 56.22ms. Allocated memory is still 153.1MB. Free memory was 83.4MB in the beginning and 82.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,056 INFO L158 Benchmark]: RCFGBuilder took 738.08ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 82.0MB in the beginning and 165.6MB in the end (delta: -83.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,057 INFO L158 Benchmark]: TraceAbstraction took 34459.67ms. Allocated memory was 216.0MB in the beginning and 660.6MB in the end (delta: 444.6MB). Free memory was 165.4MB in the beginning and 491.8MB in the end (delta: -326.4MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,057 INFO L158 Benchmark]: Witness Printer took 152.07ms. Allocated memory is still 660.6MB. Free memory was 491.8MB in the beginning and 483.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:15:11,060 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 153.1MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.41ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 85.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.45ms. Allocated memory is still 153.1MB. Free memory was 85.8MB in the beginning and 83.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.22ms. Allocated memory is still 153.1MB. Free memory was 83.4MB in the beginning and 82.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 738.08ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 82.0MB in the beginning and 165.6MB in the end (delta: -83.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 34459.67ms. Allocated memory was 216.0MB in the beginning and 660.6MB in the end (delta: 444.6MB). Free memory was 165.4MB in the beginning and 491.8MB in the end (delta: -326.4MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. * Witness Printer took 152.07ms. Allocated memory is still 660.6MB. Free memory was 491.8MB in the beginning and 483.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 118]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] - GenericResultAtLocation [Line: 322]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] - GenericResultAtLocation [Line: 331]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] - GenericResultAtLocation [Line: 697]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] - GenericResultAtLocation [Line: 823]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] - GenericResultAtLocation [Line: 917]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 327]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L127] int pumpRunning = 0; [L128] int systemActive = 1; [L501] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L801] int retValue_acc ; [L802] int tmp ; [L806] FCALL select_helpers() [L807] FCALL select_features() [L808] CALL, EXPR valid_product() [L944] int retValue_acc ; [L947] retValue_acc = 1 [L948] return (retValue_acc); [L808] RET, EXPR valid_product() [L808] tmp = valid_product() [L810] COND TRUE \read(tmp) [L812] FCALL setup() [L813] CALL runTest() [L792] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L76] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L76] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L208] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND TRUE ! pumpRunning [L169] CALL, EXPR isHighWaterLevel() [L304] int retValue_acc ; [L305] int tmp ; [L306] int tmp___0 ; [L310] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L310] RET, EXPR isHighWaterSensorDry() [L310] tmp = isHighWaterSensorDry() [L312] COND FALSE !(\read(tmp)) [L315] tmp___0 = 1 [L317] retValue_acc = tmp___0 [L318] return (retValue_acc); [L169] RET, EXPR isHighWaterLevel() [L169] tmp = isHighWaterLevel() [L171] COND TRUE \read(tmp) [L173] CALL activatePump() [L223] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L227] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isMethaneAlarm() [L229] COND FALSE !(\read(tmp)) [L233] CALL activatePump__wrappee__highWaterSensor() [L218] pumpRunning = 1 [L233] RET activatePump__wrappee__highWaterSensor() [L173] RET activatePump() [L208] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=-1, waterLevel=1] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND TRUE tmp == 0 [L709] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L709] RET, EXPR isPumpRunning() [L709] tmp___0 = isPumpRunning() [L711] COND TRUE \read(tmp___0) [L713] CALL __automaton_fail() [L327] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.2s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3030 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3003 mSDsluCounter, 1654 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1231 mSDsCounter, 2030 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3320 IncrementalHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2030 mSolverCounterUnsat, 423 mSDtfsCounter, 3320 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 879 GetRequests, 491 SyntacticMatches, 17 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19421 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=10, InterpolantAutomatonStates: 262, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 774 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 2771 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1088 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 230/387 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:15:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c03ee1-7bcb-44aa-a5f8-e24498ba5d8b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE