./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 303db4082dd8b7a60cb4b5043655f09159321046818373497160cd54b8948d04 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:05:44,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:05:44,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:05:44,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:05:44,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:05:45,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:05:45,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:05:45,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:05:45,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:05:45,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:05:45,012 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:05:45,012 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:05:45,013 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:05:45,013 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:05:45,013 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:05:45,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:05:45,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:05:45,017 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:05:45,018 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:05:45,018 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:05:45,018 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:05:45,019 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:05:45,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:05:45,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:05:45,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:05:45,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:05:45,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:05:45,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:05:45,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:05:45,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:05:45,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:05:45,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:05:45,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:05:45,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:05:45,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:05:45,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:05:45,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:05:45,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:05:45,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:05:45,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:05:45,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:05:45,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:05:45,029 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:05:45,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:05:45,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:05:45,030 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:05:45,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:05:45,030 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_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303db4082dd8b7a60cb4b5043655f09159321046818373497160cd54b8948d04 [2024-11-09 05:05:45,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:05:45,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:05:45,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:05:45,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:05:45,351 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:05:45,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c Unable to find full path for "g++" [2024-11-09 05:05:47,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:05:48,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:05:48,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c [2024-11-09 05:05:48,057 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/data/cc561bf3b/beaafd3ec1b344c8b689ebd39ea5979c/FLAG4a2dd287e [2024-11-09 05:05:48,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/data/cc561bf3b/beaafd3ec1b344c8b689ebd39ea5979c [2024-11-09 05:05:48,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:05:48,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:05:48,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:05:48,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:05:48,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:05:48,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:48" (1/1) ... [2024-11-09 05:05:48,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c49a890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:48, skipping insertion in model container [2024-11-09 05:05:48,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:48" (1/1) ... [2024-11-09 05:05:48,393 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:05:48,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c[1605,1618] [2024-11-09 05:05:48,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:05:48,892 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:05:48,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-09 05:05:48,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] [2024-11-09 05:05:48,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [283] [2024-11-09 05:05:48,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [353] [2024-11-09 05:05:48,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [454] [2024-11-09 05:05:48,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [820] [2024-11-09 05:05:48,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [855] [2024-11-09 05:05:48,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [905] [2024-11-09 05:05:48,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c[1605,1618] [2024-11-09 05:05:49,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:05:49,047 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:05:49,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49 WrapperNode [2024-11-09 05:05:49,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:05:49,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:05:49,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:05:49,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:05:49,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,107 INFO L138 Inliner]: procedures = 57, calls = 104, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 213 [2024-11-09 05:05:49,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:05:49,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:05:49,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:05:49,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:05:49,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:05:49,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:05:49,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:05:49,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:05:49,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (1/1) ... [2024-11-09 05:05:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:05:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:49,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:05:49,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:05:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:05:49,254 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:05:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:05:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:05:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:05:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:05:49,256 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:05:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:05:49,257 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:05:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:05:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:05:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-09 05:05:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-09 05:05:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 05:05:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 05:05:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 05:05:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 05:05:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:05:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:05:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:05:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:05:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:05:49,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:05:49,393 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:05:49,818 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-09 05:05:49,818 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:05:49,934 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:05:49,934 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:05:49,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:49 BoogieIcfgContainer [2024-11-09 05:05:49,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:05:49,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:05:49,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:05:49,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:05:49,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:05:48" (1/3) ... [2024-11-09 05:05:49,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc086be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:49, skipping insertion in model container [2024-11-09 05:05:49,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:49" (2/3) ... [2024-11-09 05:05:49,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc086be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:49, skipping insertion in model container [2024-11-09 05:05:49,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:49" (3/3) ... [2024-11-09 05:05:49,947 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2024-11-09 05:05:49,966 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:05:49,967 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:05:50,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:05:50,045 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d7221dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:05:50,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:05:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:05:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:05:50,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:50,061 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:50,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:50,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash -629189138, now seen corresponding path program 1 times [2024-11-09 05:05:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:50,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856062265] [2024-11-09 05:05:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:05:50,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:50,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856062265] [2024-11-09 05:05:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856062265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:50,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:05:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124227103] [2024-11-09 05:05:50,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:50,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:05:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:05:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:05:50,324 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:50,405 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2024-11-09 05:05:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:05:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-09 05:05:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:50,418 INFO L225 Difference]: With dead ends: 142 [2024-11-09 05:05:50,419 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 05:05:50,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:05:50,429 INFO L432 NwaCegarLoop]: 76 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, 76 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 [2024-11-09 05:05:50,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:05:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 05:05:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-09 05:05:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:05:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2024-11-09 05:05:50,477 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 21 [2024-11-09 05:05:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:50,477 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2024-11-09 05:05:50,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2024-11-09 05:05:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 05:05:50,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:50,481 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:50,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:05:50,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:50,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash 582330013, now seen corresponding path program 1 times [2024-11-09 05:05:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841366549] [2024-11-09 05:05:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:05:50,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:50,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841366549] [2024-11-09 05:05:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841366549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:50,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:50,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:05:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097859586] [2024-11-09 05:05:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:50,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:05:50,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:05:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:05:50,590 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:50,647 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2024-11-09 05:05:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:05:50,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-09 05:05:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:50,649 INFO L225 Difference]: With dead ends: 106 [2024-11-09 05:05:50,649 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 05:05:50,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:05:50,651 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 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 [2024-11-09 05:05:50,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:05:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 05:05:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-09 05:05:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:05:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2024-11-09 05:05:50,664 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 22 [2024-11-09 05:05:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:50,664 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2024-11-09 05:05:50,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2024-11-09 05:05:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:05:50,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:50,666 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:50,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:05:50,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:50,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash -119766236, now seen corresponding path program 1 times [2024-11-09 05:05:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462004023] [2024-11-09 05:05:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:05:50,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:50,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462004023] [2024-11-09 05:05:50,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462004023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:50,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:50,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:05:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193271414] [2024-11-09 05:05:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:50,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:05:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:05:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:05:50,871 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:05:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:50,961 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2024-11-09 05:05:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:05:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-09 05:05:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:50,965 INFO L225 Difference]: With dead ends: 173 [2024-11-09 05:05:50,965 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 05:05:50,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:05:50,967 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 61 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:50,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 133 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:05:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 05:05:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-09 05:05:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-09 05:05:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-09 05:05:50,998 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 25 [2024-11-09 05:05:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:50,999 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-09 05:05:50,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:05:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-09 05:05:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:05:51,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:51,004 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:05:51,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:05:51,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:51,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1847761304, now seen corresponding path program 1 times [2024-11-09 05:05:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:51,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624185449] [2024-11-09 05:05:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:51,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:05:51,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624185449] [2024-11-09 05:05:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624185449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:51,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:51,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:05:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065006819] [2024-11-09 05:05:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:51,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:05:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:05:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:05:51,199 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:51,438 INFO L93 Difference]: Finished difference Result 302 states and 399 transitions. [2024-11-09 05:05:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:05:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-09 05:05:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:51,441 INFO L225 Difference]: With dead ends: 302 [2024-11-09 05:05:51,442 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 05:05:51,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:05:51,444 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 38 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:51,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 265 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:05:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 05:05:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-09 05:05:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 138 states have internal predecessors, (159), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (44), 33 states have call predecessors, (44), 36 states have call successors, (44) [2024-11-09 05:05:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-11-09 05:05:51,475 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 28 [2024-11-09 05:05:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:51,476 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-11-09 05:05:51,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:05:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-11-09 05:05:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 05:05:51,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:51,478 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:51,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:05:51,478 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:51,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1666943410, now seen corresponding path program 1 times [2024-11-09 05:05:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:51,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177202769] [2024-11-09 05:05:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:05:51,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:51,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177202769] [2024-11-09 05:05:51,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177202769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:51,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:51,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:05:51,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284056639] [2024-11-09 05:05:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:51,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:05:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:51,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:05:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:05:51,888 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:05:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:52,191 INFO L93 Difference]: Finished difference Result 535 states and 679 transitions. [2024-11-09 05:05:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:05:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-09 05:05:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:52,200 INFO L225 Difference]: With dead ends: 535 [2024-11-09 05:05:52,200 INFO L226 Difference]: Without dead ends: 347 [2024-11-09 05:05:52,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:05:52,204 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 112 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:52,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 273 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:05:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-09 05:05:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 334. [2024-11-09 05:05:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 243 states have internal predecessors, (282), 61 states have call successors, (61), 51 states have call predecessors, (61), 52 states have return successors, (78), 56 states have call predecessors, (78), 61 states have call successors, (78) [2024-11-09 05:05:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 421 transitions. [2024-11-09 05:05:52,263 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 421 transitions. Word has length 37 [2024-11-09 05:05:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:52,264 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 421 transitions. [2024-11-09 05:05:52,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:05:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 421 transitions. [2024-11-09 05:05:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 05:05:52,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:52,267 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:52,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:05:52,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:52,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1904158927, now seen corresponding path program 1 times [2024-11-09 05:05:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:52,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704738406] [2024-11-09 05:05:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:52,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:05:52,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:52,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704738406] [2024-11-09 05:05:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704738406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:05:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408879371] [2024-11-09 05:05:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:52,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:05:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:05:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:05:52,712 INFO L87 Difference]: Start difference. First operand 334 states and 421 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:05:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:53,455 INFO L93 Difference]: Finished difference Result 814 states and 1045 transitions. [2024-11-09 05:05:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:05:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2024-11-09 05:05:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:53,462 INFO L225 Difference]: With dead ends: 814 [2024-11-09 05:05:53,462 INFO L226 Difference]: Without dead ends: 556 [2024-11-09 05:05:53,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:05:53,465 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 164 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:53,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 294 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:05:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-09 05:05:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 542. [2024-11-09 05:05:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 360 states have (on average 1.2805555555555554) internal successors, (461), 398 states have internal predecessors, (461), 98 states have call successors, (98), 74 states have call predecessors, (98), 83 states have return successors, (129), 95 states have call predecessors, (129), 98 states have call successors, (129) [2024-11-09 05:05:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 688 transitions. [2024-11-09 05:05:53,558 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 688 transitions. Word has length 40 [2024-11-09 05:05:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:53,559 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 688 transitions. [2024-11-09 05:05:53,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:05:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 688 transitions. [2024-11-09 05:05:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:05:53,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:53,563 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:53,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:05:53,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:53,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:53,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1963299148, now seen corresponding path program 1 times [2024-11-09 05:05:53,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:53,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20670722] [2024-11-09 05:05:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:53,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:05:53,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20670722] [2024-11-09 05:05:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20670722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:53,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:05:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314929647] [2024-11-09 05:05:53,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:53,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:05:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:53,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:05:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:05:53,637 INFO L87 Difference]: Start difference. First operand 542 states and 688 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 05:05:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:53,869 INFO L93 Difference]: Finished difference Result 648 states and 822 transitions. [2024-11-09 05:05:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:05:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 61 [2024-11-09 05:05:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:53,873 INFO L225 Difference]: With dead ends: 648 [2024-11-09 05:05:53,873 INFO L226 Difference]: Without dead ends: 261 [2024-11-09 05:05:53,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:05:53,878 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 101 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:53,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 138 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:05:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-09 05:05:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-09 05:05:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 174 states have (on average 1.2298850574712643) internal successors, (214), 191 states have internal predecessors, (214), 46 states have call successors, (46), 35 states have call predecessors, (46), 40 states have return successors, (61), 46 states have call predecessors, (61), 46 states have call successors, (61) [2024-11-09 05:05:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 321 transitions. [2024-11-09 05:05:53,950 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 321 transitions. Word has length 61 [2024-11-09 05:05:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:53,951 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 321 transitions. [2024-11-09 05:05:53,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 05:05:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 321 transitions. [2024-11-09 05:05:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:05:53,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:53,955 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:53,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:05:53,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:53,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash -174776660, now seen corresponding path program 1 times [2024-11-09 05:05:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:53,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370353874] [2024-11-09 05:05:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:05:54,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:54,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370353874] [2024-11-09 05:05:54,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370353874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:05:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200354721] [2024-11-09 05:05:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:54,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:05:54,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:05:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:54,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:05:54,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:05:54,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:05:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 05:05:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200354721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:05:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [622860522] [2024-11-09 05:05:55,070 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-09 05:05:55,070 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:05:55,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:05:55,082 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:05:55,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:06:28,882 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 137 for LOIs [2024-11-09 05:06:28,944 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2024-11-09 05:06:29,055 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 33 for LOIs [2024-11-09 05:06:29,069 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 22 for LOIs [2024-11-09 05:06:29,103 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2024-11-09 05:06:29,106 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:06:33,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= 1 |#StackHeapBarrier|) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= ~head~0.offset 0) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= ~waterLevel~0 2147483647) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~head~0.base 0) (= ~switchedOnBeforeTS~0 0) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-09 05:06:33,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:06:33,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:06:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2024-11-09 05:06:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302977507] [2024-11-09 05:06:33,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:06:33,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:06:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:06:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:06:33,955 INFO L87 Difference]: Start difference. First operand 261 states and 321 transitions. Second operand has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:06:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:36,706 INFO L93 Difference]: Finished difference Result 1817 states and 2328 transitions. [2024-11-09 05:06:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 05:06:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 70 [2024-11-09 05:06:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:36,717 INFO L225 Difference]: With dead ends: 1817 [2024-11-09 05:06:36,717 INFO L226 Difference]: Without dead ends: 1558 [2024-11-09 05:06:36,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2997 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=944, Invalid=7798, Unknown=0, NotChecked=0, Total=8742 [2024-11-09 05:06:36,723 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 635 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:36,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1391 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:06:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-09 05:06:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1060. [2024-11-09 05:06:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 716 states have (on average 1.1955307262569832) internal successors, (856), 771 states have internal predecessors, (856), 177 states have call successors, (177), 149 states have call predecessors, (177), 166 states have return successors, (265), 172 states have call predecessors, (265), 177 states have call successors, (265) [2024-11-09 05:06:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1298 transitions. [2024-11-09 05:06:36,859 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1298 transitions. Word has length 70 [2024-11-09 05:06:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:36,859 INFO L471 AbstractCegarLoop]: Abstraction has 1060 states and 1298 transitions. [2024-11-09 05:06:36,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 6 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:06:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1298 transitions. [2024-11-09 05:06:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 05:06:36,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:36,863 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:36,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:06:37,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:06:37,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:37,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash -846766076, now seen corresponding path program 1 times [2024-11-09 05:06:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:37,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371908010] [2024-11-09 05:06:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 05:06:37,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371908010] [2024-11-09 05:06:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371908010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715457600] [2024-11-09 05:06:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:37,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:37,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:06:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:37,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:06:37,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:06:37,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:06:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715457600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:06:37,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:06:37,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 18 [2024-11-09 05:06:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920724795] [2024-11-09 05:06:37,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:06:37,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:06:37,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:06:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:06:37,691 INFO L87 Difference]: Start difference. First operand 1060 states and 1298 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:06:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:38,514 INFO L93 Difference]: Finished difference Result 2024 states and 2553 transitions. [2024-11-09 05:06:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:06:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 73 [2024-11-09 05:06:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:38,528 INFO L225 Difference]: With dead ends: 2024 [2024-11-09 05:06:38,528 INFO L226 Difference]: Without dead ends: 1331 [2024-11-09 05:06:38,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:06:38,533 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:38,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 525 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:06:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-09 05:06:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1186. [2024-11-09 05:06:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 799 states have (on average 1.1764705882352942) internal successors, (940), 865 states have internal predecessors, (940), 200 states have call successors, (200), 170 states have call predecessors, (200), 186 states have return successors, (320), 187 states have call predecessors, (320), 200 states have call successors, (320) [2024-11-09 05:06:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1460 transitions. [2024-11-09 05:06:38,681 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1460 transitions. Word has length 73 [2024-11-09 05:06:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:38,683 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1460 transitions. [2024-11-09 05:06:38,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:06:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1460 transitions. [2024-11-09 05:06:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 05:06:38,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:38,688 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:38,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:06:38,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:38,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:38,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 932059543, now seen corresponding path program 1 times [2024-11-09 05:06:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161618171] [2024-11-09 05:06:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 05:06:39,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161618171] [2024-11-09 05:06:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161618171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392831186] [2024-11-09 05:06:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:39,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:39,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:39,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:06:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:39,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:06:39,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:06:39,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:06:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 05:06:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392831186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:06:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529145926] [2024-11-09 05:06:40,054 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2024-11-09 05:06:40,055 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:06:40,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:06:40,055 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:06:40,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:06:52,688 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2024-11-09 05:06:52,820 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2024-11-09 05:06:53,104 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 38 for LOIs [2024-11-09 05:06:53,116 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 22 for LOIs [2024-11-09 05:06:53,158 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 34 for LOIs [2024-11-09 05:06:53,178 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:06:58,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17204#(and (<= 1 |#StackHeapBarrier|) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= ~head~0.offset 0) (<= |old(~switchedOnBeforeTS~0)| 2147483647) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= 0 (+ |old(~switchedOnBeforeTS~0)| 2147483648)) (<= ~waterLevel~0 2147483647) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~head~0.base 0) (= ~switchedOnBeforeTS~0 0) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4))' at error location [2024-11-09 05:06:58,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:06:58,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:06:58,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 24 [2024-11-09 05:06:58,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901015843] [2024-11-09 05:06:58,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:06:58,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:06:58,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:06:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2622, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 05:06:58,718 INFO L87 Difference]: Start difference. First operand 1186 states and 1460 transitions. Second operand has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-09 05:07:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:04,575 INFO L93 Difference]: Finished difference Result 2921 states and 3685 transitions. [2024-11-09 05:07:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-09 05:07:04,576 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) Word has length 103 [2024-11-09 05:07:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:04,580 INFO L225 Difference]: With dead ends: 2921 [2024-11-09 05:07:04,581 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:07:04,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 295 SyntacticMatches, 9 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7612 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2077, Invalid=18803, Unknown=0, NotChecked=0, Total=20880 [2024-11-09 05:07:04,600 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 1124 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:04,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 895 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 05:07:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:07:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:07:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:07:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:07:04,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-11-09 05:07:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:04,606 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:07:04,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-09 05:07:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:07:04,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:07:04,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:07:04,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:07:04,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:04,818 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:04,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:07:29,956 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:07:30,000 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (let ((.cse0 (= 1 ~systemActive~0))) (and (or (and (<= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) .cse0) (or (< 2 ~waterLevel~0) (= ~methaneLevelCritical~0 0) (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (= ~switchedOnBeforeTS~0 0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))))) Eliminated clause: (or (and (<= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) (= 1 ~systemActive~0)) [2024-11-09 05:07:30,035 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse0 (not .cse3)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not .cse2)) (or .cse3 (not .cse1) .cse4) (let ((.cse6 (= 2 ~waterLevel~0)) (.cse5 (= ~pumpRunning~0 0))) (or (and .cse5 .cse2 (= ~waterLevel~0 1)) (and .cse6 .cse2 (or .cse0 (= ~pumpRunning~0 1))) (and .cse5 .cse0 (<= ~waterLevel~0 1) .cse2) (and .cse5 .cse6 .cse2) (and .cse3 .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse5 .cse4)))))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse0 (not .cse3)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not .cse2)) (or .cse3 (not .cse1) .cse4) (let ((.cse6 (= 2 ~waterLevel~0)) (.cse5 (= ~pumpRunning~0 0))) (or (and .cse5 .cse2 (= ~waterLevel~0 1)) (and .cse6 .cse2 (or .cse0 (= ~pumpRunning~0 1))) (and .cse5 .cse0 (<= ~waterLevel~0 1) .cse2) (and .cse5 .cse6 .cse2) (and .cse3 .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse5 .cse4))))))) [2024-11-09 05:07:30,058 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:07:30,078 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse3 (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (let ((.cse4 (not .cse3)) (.cse6 (= ~switchedOnBeforeTS~0 0)) (.cse5 (not .cse1)) (.cse2 (= 0 ~systemActive~0)) (.cse7 (= |old(~switchedOnBeforeTS~0)| 0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse0 (= 1 ~systemActive~0))) (or (and .cse0 (= |old(~waterLevel~0)| 2)) (and .cse1 .cse2) (and (or (< |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 1)) .cse0 .cse3) (and .cse0 .cse1 (<= |old(~waterLevel~0)| 1)))) (or .cse4 .cse5 .cse2 .cse6) (or .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse7) (= |old(~waterLevel~0)| ~waterLevel~0) (or (not .cse6) .cse5 .cse2 .cse7)))) Eliminated clause: (exists ((|old(~switchedOnBeforeTS~0)| Int)) (let ((.cse3 (= ~pumpRunning~0 0))) (let ((.cse0 (= ~pumpRunning~0 |old(~switchedOnBeforeTS~0)|)) (.cse6 (= ~switchedOnBeforeTS~0 0)) (.cse5 (not .cse3)) (.cse4 (= 0 ~systemActive~0)) (.cse1 (= |old(~switchedOnBeforeTS~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1) (let ((.cse2 (= 1 ~systemActive~0))) (or (and (= 2 ~waterLevel~0) .cse2) (and .cse3 (<= ~waterLevel~0 1) .cse2) (and .cse2 (or (< ~waterLevel~0 1) (= ~waterLevel~0 1)) .cse0) (and .cse3 .cse4))) (or (not .cse1) .cse5 .cse4 .cse6) (or (not .cse6) .cse5 .cse4 .cse1))))) [2024-11-09 05:07:30,113 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:07:30,127 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse0 (= |old(~waterLevel~0)| 1)) (.cse6 (not .cse1)) (.cse3 (= ~pumpRunning~0 1)) (.cse2 (= 1 ~systemActive~0)) (.cse5 (= |old(~waterLevel~0)| 2)) (.cse4 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse4 .cse0 .cse2) (and .cse1 .cse2 (<= |old(~waterLevel~0)| 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse4 (< |old(~waterLevel~0)| 1) .cse2 .cse6) (and (or .cse6 .cse3) .cse2 .cse5) (and .cse4 (= 0 ~systemActive~0))))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse6 (= ~methaneLevelCritical~0 0))) (let ((.cse2 (= ~waterLevel~0 1)) (.cse5 (= ~pumpRunning~0 1)) (.cse4 (not .cse6)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 (or .cse4 .cse5) .cse1) (and .cse6 .cse1 .cse2 .cse5) (and .cse0 .cse1 .cse4 (<= ~waterLevel~0 0)) (and .cse0 .cse3 .cse1) (and .cse6 (<= ~waterLevel~0 1) .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse0 (= 0 ~systemActive~0))))) [2024-11-09 05:07:30,149 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2)) (.cse2 (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) (or (and .cse0 (= |old(~pumpRunning~0)| 0) .cse1 .cse2) (and (= ~methaneLevelCritical~0 0) .cse0 .cse1 .cse2))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2))) (or (and (= ~methaneLevelCritical~0 0) .cse0 .cse1) (and .cse0 .cse1 (= ~switchedOnBeforeTS~0 0)))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2024-11-09 05:07:30,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:07:30 BoogieIcfgContainer [2024-11-09 05:07:30,170 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:07:30,170 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:07:30,170 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:07:30,171 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:07:30,171 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:49" (3/4) ... [2024-11-09 05:07:30,174 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:07:30,178 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 05:07:30,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:07:30,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:07:30,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:07:30,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:07:30,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:07:30,180 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:07:30,180 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-09 05:07:30,180 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 05:07:30,197 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-09 05:07:30,200 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 05:07:30,201 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:07:30,201 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:07:30,202 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:07:30,383 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:07:30,384 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:07:30,384 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:07:30,386 INFO L158 Benchmark]: Toolchain (without parser) took 102065.67ms. Allocated memory was 157.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 121.9MB in the beginning and 869.5MB in the end (delta: -747.5MB). Peak memory consumption was 615.5MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,386 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:07:30,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.44ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 99.9MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.06ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,388 INFO L158 Benchmark]: Boogie Preprocessor took 37.20ms. Allocated memory is still 157.3MB. Free memory was 97.7MB in the beginning and 95.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,388 INFO L158 Benchmark]: RCFGBuilder took 788.49ms. Allocated memory is still 157.3MB. Free memory was 95.9MB in the beginning and 113.8MB in the end (delta: -18.0MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,389 INFO L158 Benchmark]: TraceAbstraction took 100232.72ms. Allocated memory was 157.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 113.2MB in the beginning and 877.9MB in the end (delta: -764.6MB). Peak memory consumption was 914.1MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,390 INFO L158 Benchmark]: Witness Printer took 214.81ms. Allocated memory is still 1.5GB. Free memory was 877.9MB in the beginning and 869.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:07:30,392 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 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.44ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 99.9MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.06ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.20ms. Allocated memory is still 157.3MB. Free memory was 97.7MB in the beginning and 95.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 788.49ms. Allocated memory is still 157.3MB. Free memory was 95.9MB in the beginning and 113.8MB in the end (delta: -18.0MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 100232.72ms. Allocated memory was 157.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 113.2MB in the beginning and 877.9MB in the end (delta: -764.6MB). Peak memory consumption was 914.1MB. Max. memory is 16.1GB. * Witness Printer took 214.81ms. Allocated memory is still 1.5GB. Free memory was 877.9MB in the beginning and 869.5MB 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,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] - GenericResultAtLocation [Line: 283]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [283] - GenericResultAtLocation [Line: 353]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [353] - GenericResultAtLocation [Line: 454]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [454] - GenericResultAtLocation [Line: 820]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [820] - GenericResultAtLocation [Line: 855]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [855] - GenericResultAtLocation [Line: 905]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [905] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2373 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2345 mSDsluCounter, 4097 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3149 mSDsCounter, 1396 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4948 IncrementalHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1396 mSolverCounterUnsat, 948 mSDtfsCounter, 4948 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 884 GetRequests, 578 SyntacticMatches, 12 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10780 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1186occurred in iteration=9, InterpolantAutomatonStates: 205, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 674 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 884 ConstructedInterpolants, 0 QuantifiedInterpolants, 2369 SizeOfPredicates, 10 NumberOfNonLiveVariables, 899 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 392/445 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 365]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 297]: Loop Invariant Derived loop invariant: (((((((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) || (((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == switchedOnBeforeTS))) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || ((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 296]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 193]: Location Invariant Derived location invariant: (((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) - ProcedureContractResult [Line: 185]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((2 <= waterLevel) && (0 != systemActive)) || (1 == systemActive)) Ensures: (((pumpRunning == 0) && (((2 <= waterLevel) && (0 != systemActive)) || (1 == systemActive))) && ((((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 101]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 932]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: ((((((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0)) || (0 == systemActive)) && ((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && (1 == systemActive)) && ((\old(methaneLevelCritical) != 0) || (pumpRunning == 1)))) || ((((pumpRunning == 0) && (\old(methaneLevelCritical) != 0)) && (waterLevel <= 1)) && (1 == systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((((\old(methaneLevelCritical) == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) || ((pumpRunning == 0) && (0 == systemActive)))) && (((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0)) || (0 == systemActive))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 355]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 74]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((((((((\old(pumpRunning) != 0) || (2 == waterLevel)) || (\old(waterLevel) != 2)) && (((methaneLevelCritical == 0) || (\old(pumpRunning) == 0)) || (((switchedOnBeforeTS != 0) && (pumpRunning == 0)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))))) && (((((\old(pumpRunning) != 0) || (methaneLevelCritical != 0)) || (0 == systemActive)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) || ((2 == waterLevel) && (pumpRunning == 1)))) && (((((\old(pumpRunning) == 0) || (methaneLevelCritical != 0)) || (\old(waterLevel) != 2)) || ((2 == waterLevel) && (pumpRunning == 1))) || (((pumpRunning == \old(pumpRunning)) && (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)))) && ((((\old(switchedOnBeforeTS) != \old(pumpRunning)) || (((pumpRunning == \old(pumpRunning)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (pumpRunning == switchedOnBeforeTS))) || (methaneLevelCritical != 0)) || (\old(switchedOnBeforeTS) == 0))) && (((\old(waterLevel) != 1) || (waterLevel == 1)) || (0 != systemActive))) && (((((1 == systemActive) && (\old(waterLevel) == 2)) || ((\old(pumpRunning) == 0) && (0 == systemActive))) || ((((\old(waterLevel) < 1) || (\old(waterLevel) == 1)) && (1 == systemActive)) && (\old(switchedOnBeforeTS) == \old(pumpRunning)))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)))) && (((\old(pumpRunning) != 1) || (\old(waterLevel) != 2)) || (waterLevel == 1))) && ((pumpRunning == 0) || (0 != systemActive))) && ((((\old(pumpRunning) != 0) || ((\old(waterLevel) != 1) && (1 <= \old(waterLevel)))) || (0 == systemActive)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0)))) && ((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 920]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && ((methaneLevelCritical != 0) || (pumpRunning == 1))) && (1 == systemActive))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel == 1)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (waterLevel <= 0))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((((((2 == waterLevel) || (\old(waterLevel) != 2)) && ((2 == waterLevel) || (\old(waterLevel) != 1))) && ((((0 < \old(waterLevel)) || (pumpRunning != switchedOnBeforeTS)) || (waterLevel < 2)) || (switchedOnBeforeTS == 0))) && ((((((((((\old(waterLevel) == 1) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == 2))) || (((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(waterLevel) <= 1)) && (pumpRunning == switchedOnBeforeTS))) || ((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (1 == systemActive)) && (\old(waterLevel) == 2))) || ((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (\old(waterLevel) <= 0))) || ((pumpRunning == 0) && (0 == systemActive)))) && ((1 != systemActive) || (waterLevel < 3))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 109]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: (((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((1 == systemActive) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0))) && (pumpRunning == switchedOnBeforeTS)) Ensures: (((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((waterLevel != 1) && (1 <= waterLevel))) && (((((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == \old(pumpRunning))))) && ((pumpRunning == switchedOnBeforeTS) || (switchedOnBeforeTS == 0))) && ((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (methaneLevelCritical != 0)) || (pumpRunning == 1))) && ((((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 204]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) || (((1 == systemActive) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((((((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) || (0 == systemActive)) || (((1 == systemActive) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) && (pumpRunning == \result)) && ((\result == 0) || (0 != systemActive))) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 193]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) Ensures: (((((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) && (methaneLevelCritical == \result)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:07:30,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff469f1a-51a0-4641-ac34-c53b70a53ee8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE