./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product64.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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/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 0f3f23173af8ffbfd6ca2d826b937f078be2c112e64596739bc9740bb061a5d2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:28:49,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:28:49,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:28:49,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:28:49,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:28:49,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:28:49,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:28:49,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:28:49,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:28:49,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:28:49,518 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:28:49,519 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:28:49,519 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:28:49,519 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:28:49,520 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:28:49,520 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:28:49,523 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:28:49,524 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:28:49,524 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:28:49,525 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:28:49,525 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:28:49,526 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:28:49,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:28:49,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:28:49,528 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:28:49,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:28:49,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:28:49,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:28:49,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:28:49,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:28:49,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:28:49,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:28:49,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:28:49,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:28:49,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:28:49,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:28:49,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:28:49,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:28:49,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:49,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:28:49,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:28:49,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:28:49,534 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:28:49,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:28:49,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:28:49,535 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:28:49,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:28:49,536 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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3f23173af8ffbfd6ca2d826b937f078be2c112e64596739bc9740bb061a5d2 [2024-11-09 05:28:49,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:28:49,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:28:49,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:28:49,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:28:49,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:28:49,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c Unable to find full path for "g++" [2024-11-09 05:28:51,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:28:52,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:28:52,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c [2024-11-09 05:28:52,173 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/data/90a7dc0b2/e4deb40cb2374dd982f3127ae9a5e031/FLAG3d3639c02 [2024-11-09 05:28:52,488 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/data/90a7dc0b2/e4deb40cb2374dd982f3127ae9a5e031 [2024-11-09 05:28:52,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:28:52,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:28:52,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:52,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:28:52,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:28:52,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:52" (1/1) ... [2024-11-09 05:28:52,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748c5f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:52, skipping insertion in model container [2024-11-09 05:28:52,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:28:52" (1/1) ... [2024-11-09 05:28:52,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:28:52,836 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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c[2897,2910] [2024-11-09 05:28:52,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:53,012 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:28:53,022 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2024-11-09 05:28:53,023 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [153] [2024-11-09 05:28:53,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [162] [2024-11-09 05:28:53,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [190] [2024-11-09 05:28:53,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [261] [2024-11-09 05:28:53,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [531] [2024-11-09 05:28:53,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [897] [2024-11-09 05:28:53,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1000] [2024-11-09 05:28:53,039 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_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c[2897,2910] [2024-11-09 05:28:53,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:28:53,155 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:28:53,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53 WrapperNode [2024-11-09 05:28:53,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:28:53,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:53,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:28:53,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:28:53,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,215 INFO L138 Inliner]: procedures = 59, calls = 107, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 243 [2024-11-09 05:28:53,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:28:53,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:28:53,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:28:53,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:28:53,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:28:53,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:28:53,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:28:53,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:28:53,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (1/1) ... [2024-11-09 05:28:53,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:28:53,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:53,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:28:53,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:28:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:28:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:28:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:28:53,340 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:28:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:28:53,340 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:28:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:28:53,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:28:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:28:53,341 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:28:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:28:53,341 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:28:53,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:28:53,341 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 05:28:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 05:28:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 05:28:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 05:28:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:28:53,342 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:28:53,342 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:28:53,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:28:53,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:28:53,446 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:28:53,451 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:28:53,895 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-09 05:28:53,895 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:28:54,024 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:28:54,024 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:28:54,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:54 BoogieIcfgContainer [2024-11-09 05:28:54,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:28:54,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:28:54,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:28:54,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:28:54,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:28:52" (1/3) ... [2024-11-09 05:28:54,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ab84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:54, skipping insertion in model container [2024-11-09 05:28:54,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:28:53" (2/3) ... [2024-11-09 05:28:54,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ab84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:28:54, skipping insertion in model container [2024-11-09 05:28:54,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:54" (3/3) ... [2024-11-09 05:28:54,034 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2024-11-09 05:28:54,054 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:28:54,055 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:28:54,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:28:54,123 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;@798f7145, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:28:54,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:28:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 56 states have internal predecessors, (65), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 05:28:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:28:54,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:54,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:54,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:54,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1408425493, now seen corresponding path program 1 times [2024-11-09 05:28:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307756142] [2024-11-09 05:28:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:54,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307756142] [2024-11-09 05:28:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307756142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:54,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:28:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983957404] [2024-11-09 05:28:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:54,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:28:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:28:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:28:54,383 INFO L87 Difference]: Start difference. First operand has 73 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 56 states have internal predecessors, (65), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:54,459 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2024-11-09 05:28:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:28:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:28:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:54,475 INFO L225 Difference]: With dead ends: 144 [2024-11-09 05:28:54,476 INFO L226 Difference]: Without dead ends: 68 [2024-11-09 05:28:54,480 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 05:28:54,486 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:54,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-09 05:28:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-09 05:28:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 52 states have internal predecessors, (57), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:28:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2024-11-09 05:28:54,541 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 12 [2024-11-09 05:28:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:54,542 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2024-11-09 05:28:54,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2024-11-09 05:28:54,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:28:54,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:54,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:54,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:28:54,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:54,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 341357246, now seen corresponding path program 1 times [2024-11-09 05:28:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344698154] [2024-11-09 05:28:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:54,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344698154] [2024-11-09 05:28:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344698154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:54,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:28:54,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233515682] [2024-11-09 05:28:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:54,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:28:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:28:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:54,685 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:54,751 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2024-11-09 05:28:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:28:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:28:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:54,754 INFO L225 Difference]: With dead ends: 108 [2024-11-09 05:28:54,754 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 05:28:54,755 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 05:28:54,756 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:54,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:28:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 05:28:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-09 05:28:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 47 states have internal predecessors, (51), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:28:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-09 05:28:54,768 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 13 [2024-11-09 05:28:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:54,769 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-09 05:28:54,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-11-09 05:28:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:28:54,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:54,770 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:54,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:28:54,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:54,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1819493283, now seen corresponding path program 1 times [2024-11-09 05:28:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959002499] [2024-11-09 05:28:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:54,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959002499] [2024-11-09 05:28:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959002499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:54,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:54,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:28:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244421084] [2024-11-09 05:28:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:54,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:28:54,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:28:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:28:54,883 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:54,992 INFO L93 Difference]: Finished difference Result 176 states and 234 transitions. [2024-11-09 05:28:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:28:54,993 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 05:28:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:54,997 INFO L225 Difference]: With dead ends: 176 [2024-11-09 05:28:54,998 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 05:28:54,998 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 05:28:55,003 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 73 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:55,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 05:28:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2024-11-09 05:28:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 89 states have internal predecessors, (97), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 17 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 05:28:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2024-11-09 05:28:55,038 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 16 [2024-11-09 05:28:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:55,038 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2024-11-09 05:28:55,038 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2024-11-09 05:28:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:28:55,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:55,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:55,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:28:55,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:55,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1249716729, now seen corresponding path program 1 times [2024-11-09 05:28:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047012597] [2024-11-09 05:28:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:55,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047012597] [2024-11-09 05:28:55,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047012597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:55,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:28:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591557985] [2024-11-09 05:28:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:55,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:28:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:28:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:28:55,194 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:55,353 INFO L93 Difference]: Finished difference Result 302 states and 413 transitions. [2024-11-09 05:28:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:28:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 05:28:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:55,358 INFO L225 Difference]: With dead ends: 302 [2024-11-09 05:28:55,358 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 05:28:55,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:28:55,364 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 42 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:55,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 165 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 05:28:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-09 05:28:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 140 states have internal predecessors, (161), 34 states have call successors, (34), 30 states have call predecessors, (34), 30 states have return successors, (46), 29 states have call predecessors, (46), 34 states have call successors, (46) [2024-11-09 05:28:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2024-11-09 05:28:55,423 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 19 [2024-11-09 05:28:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:55,424 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2024-11-09 05:28:55,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:28:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2024-11-09 05:28:55,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:28:55,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:55,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:55,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:28:55,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:55,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -751624606, now seen corresponding path program 1 times [2024-11-09 05:28:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:55,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249225174] [2024-11-09 05:28:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:55,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249225174] [2024-11-09 05:28:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249225174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:55,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:28:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537410358] [2024-11-09 05:28:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:55,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:28:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:28:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:28:55,867 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:56,234 INFO L93 Difference]: Finished difference Result 536 states and 692 transitions. [2024-11-09 05:28:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:28:56,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 05:28:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:56,240 INFO L225 Difference]: With dead ends: 536 [2024-11-09 05:28:56,240 INFO L226 Difference]: Without dead ends: 350 [2024-11-09 05:28:56,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:28:56,242 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 142 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:56,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 328 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:28:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-09 05:28:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 306. [2024-11-09 05:28:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 209 states have (on average 1.2966507177033493) internal successors, (271), 229 states have internal predecessors, (271), 47 states have call successors, (47), 43 states have call predecessors, (47), 49 states have return successors, (65), 47 states have call predecessors, (65), 47 states have call successors, (65) [2024-11-09 05:28:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2024-11-09 05:28:56,295 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 383 transitions. Word has length 33 [2024-11-09 05:28:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:56,296 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 383 transitions. [2024-11-09 05:28:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:28:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 383 transitions. [2024-11-09 05:28:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 05:28:56,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:56,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:56,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:28:56,301 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:56,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1075289397, now seen corresponding path program 1 times [2024-11-09 05:28:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:56,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773328810] [2024-11-09 05:28:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:56,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:56,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773328810] [2024-11-09 05:28:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773328810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:56,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:56,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:28:56,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124994362] [2024-11-09 05:28:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:56,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:28:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:28:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:28:56,637 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:28:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:57,185 INFO L93 Difference]: Finished difference Result 760 states and 967 transitions. [2024-11-09 05:28:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:28:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-09 05:28:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:57,190 INFO L225 Difference]: With dead ends: 760 [2024-11-09 05:28:57,190 INFO L226 Difference]: Without dead ends: 528 [2024-11-09 05:28:57,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:28:57,193 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 159 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:57,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 260 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:28:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-09 05:28:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 496. [2024-11-09 05:28:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 339 states have (on average 1.2861356932153392) internal successors, (436), 374 states have internal predecessors, (436), 76 states have call successors, (76), 64 states have call predecessors, (76), 80 states have return successors, (110), 80 states have call predecessors, (110), 76 states have call successors, (110) [2024-11-09 05:28:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 622 transitions. [2024-11-09 05:28:57,277 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 622 transitions. Word has length 36 [2024-11-09 05:28:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:57,277 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 622 transitions. [2024-11-09 05:28:57,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:28:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 622 transitions. [2024-11-09 05:28:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 05:28:57,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:57,284 INFO L215 NwaCegarLoop]: trace histogram [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 05:28:57,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:28:57,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:57,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash -80871838, now seen corresponding path program 1 times [2024-11-09 05:28:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:57,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127291260] [2024-11-09 05:28:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:57,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:57,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127291260] [2024-11-09 05:28:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127291260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:57,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:28:57,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:28:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090849535] [2024-11-09 05:28:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:57,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:28:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:28:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:28:57,358 INFO L87 Difference]: Start difference. First operand 496 states and 622 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:28:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:57,541 INFO L93 Difference]: Finished difference Result 819 states and 1028 transitions. [2024-11-09 05:28:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:28:57,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2024-11-09 05:28:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:57,546 INFO L225 Difference]: With dead ends: 819 [2024-11-09 05:28:57,546 INFO L226 Difference]: Without dead ends: 325 [2024-11-09 05:28:57,549 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 05:28:57,550 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 95 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:57,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 126 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-09 05:28:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2024-11-09 05:28:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 222 states have (on average 1.2747747747747749) internal successors, (283), 246 states have internal predecessors, (283), 47 states have call successors, (47), 41 states have call predecessors, (47), 49 states have return successors, (64), 49 states have call predecessors, (64), 47 states have call successors, (64) [2024-11-09 05:28:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 394 transitions. [2024-11-09 05:28:57,613 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 394 transitions. Word has length 54 [2024-11-09 05:28:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:57,613 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 394 transitions. [2024-11-09 05:28:57,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 05:28:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 394 transitions. [2024-11-09 05:28:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 05:28:57,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:57,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:57,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:28:57,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:57,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:57,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1031144627, now seen corresponding path program 1 times [2024-11-09 05:28:57,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:57,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553321785] [2024-11-09 05:28:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:57,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:28:57,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553321785] [2024-11-09 05:28:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553321785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097806758] [2024-11-09 05:28:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:57,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:57,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:57,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:28:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:58,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:28:58,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:28:58,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:28:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097806758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:28:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:28:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-09 05:28:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314335525] [2024-11-09 05:28:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:28:58,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:28:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:28:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:28:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:28:58,246 INFO L87 Difference]: Start difference. First operand 319 states and 394 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:28:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:28:58,437 INFO L93 Difference]: Finished difference Result 485 states and 608 transitions. [2024-11-09 05:28:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:28:58,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-09 05:28:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:28:58,440 INFO L225 Difference]: With dead ends: 485 [2024-11-09 05:28:58,440 INFO L226 Difference]: Without dead ends: 340 [2024-11-09 05:28:58,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:28:58,442 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 30 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:28:58,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 304 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:28:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-09 05:28:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 320. [2024-11-09 05:28:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 221 states have (on average 1.257918552036199) internal successors, (278), 246 states have internal predecessors, (278), 48 states have call successors, (48), 42 states have call predecessors, (48), 50 states have return successors, (65), 50 states have call predecessors, (65), 48 states have call successors, (65) [2024-11-09 05:28:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 391 transitions. [2024-11-09 05:28:58,490 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 391 transitions. Word has length 67 [2024-11-09 05:28:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:28:58,490 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 391 transitions. [2024-11-09 05:28:58,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:28:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 391 transitions. [2024-11-09 05:28:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:28:58,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:28:58,492 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:28:58,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:28:58,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:28:58,696 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:28:58,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:28:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1539398336, now seen corresponding path program 1 times [2024-11-09 05:28:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:28:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127115224] [2024-11-09 05:28:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:28:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:28:59,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:28:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127115224] [2024-11-09 05:28:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127115224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:28:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43828413] [2024-11-09 05:28:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:28:59,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:28:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:28:59,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:28:59,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:28:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:28:59,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:28:59,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:28:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:28:59,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 05:29:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43828413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416350612] [2024-11-09 05:29:00,357 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 05:29:00,357 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:29:00,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:29:00,366 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:29:00,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:29:02,642 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 151 for LOIs [2024-11-09 05:29:02,764 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2024-11-09 05:29:03,021 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 16 for LOIs [2024-11-09 05:29:03,081 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 29 for LOIs [2024-11-09 05:29:03,178 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 37 for LOIs [2024-11-09 05:29:03,192 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 21 for LOIs [2024-11-09 05:29:03,195 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:29:09,140 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8520#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4))' at error location [2024-11-09 05:29:09,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:29:09,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:29:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 27 [2024-11-09 05:29:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470776162] [2024-11-09 05:29:09,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:29:09,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:29:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:29:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:29:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=3030, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:29:09,148 INFO L87 Difference]: Start difference. First operand 320 states and 391 transitions. Second operand has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-09 05:29:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:13,695 INFO L93 Difference]: Finished difference Result 1403 states and 1830 transitions. [2024-11-09 05:29:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 05:29:13,696 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) Word has length 71 [2024-11-09 05:29:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:13,703 INFO L225 Difference]: With dead ends: 1403 [2024-11-09 05:29:13,703 INFO L226 Difference]: Without dead ends: 1085 [2024-11-09 05:29:13,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 176 SyntacticMatches, 10 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7750 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2593, Invalid=16313, Unknown=0, NotChecked=0, Total=18906 [2024-11-09 05:29:13,710 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 1208 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:13,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1122 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:29:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2024-11-09 05:29:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 767. [2024-11-09 05:29:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 529 states have (on average 1.2325141776937618) internal successors, (652), 583 states have internal predecessors, (652), 110 states have call successors, (110), 98 states have call predecessors, (110), 127 states have return successors, (170), 124 states have call predecessors, (170), 110 states have call successors, (170) [2024-11-09 05:29:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 932 transitions. [2024-11-09 05:29:13,800 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 932 transitions. Word has length 71 [2024-11-09 05:29:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:13,800 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 932 transitions. [2024-11-09 05:29:13,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.130434782608695) internal successors, (95), 23 states have internal predecessors, (95), 11 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-09 05:29:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 932 transitions. [2024-11-09 05:29:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 05:29:13,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:13,807 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:13,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:29:14,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:14,012 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:29:14,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1202262435, now seen corresponding path program 1 times [2024-11-09 05:29:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:29:14,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292847879] [2024-11-09 05:29:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:29:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:29:14,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:29:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292847879] [2024-11-09 05:29:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292847879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:29:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313453184] [2024-11-09 05:29:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:14,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:14,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:14,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:14,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:29:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:14,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:29:14,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 78 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:29:14,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 73 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 05:29:15,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313453184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [461060325] [2024-11-09 05:29:15,698 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-09 05:29:15,698 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:29:15,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:29:15,699 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:29:15,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:29:17,142 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 151 for LOIs [2024-11-09 05:29:17,220 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2024-11-09 05:29:17,432 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 16 for LOIs [2024-11-09 05:29:17,484 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 29 for LOIs [2024-11-09 05:29:17,559 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 37 for LOIs [2024-11-09 05:29:17,571 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 21 for LOIs [2024-11-09 05:29:17,573 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:29:23,501 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12680#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4))' at error location [2024-11-09 05:29:23,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:29:23,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:29:23,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 28 [2024-11-09 05:29:23,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139377879] [2024-11-09 05:29:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:29:23,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:29:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:29:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:29:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=3111, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:29:23,506 INFO L87 Difference]: Start difference. First operand 767 states and 932 transitions. Second operand has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-09 05:29:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:28,106 INFO L93 Difference]: Finished difference Result 3023 states and 3874 transitions. [2024-11-09 05:29:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-09 05:29:28,107 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 126 [2024-11-09 05:29:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:28,124 INFO L225 Difference]: With dead ends: 3023 [2024-11-09 05:29:28,124 INFO L226 Difference]: Without dead ends: 2279 [2024-11-09 05:29:28,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 346 SyntacticMatches, 9 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2014, Invalid=17446, Unknown=0, NotChecked=0, Total=19460 [2024-11-09 05:29:28,133 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 1112 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:28,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1251 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:29:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2024-11-09 05:29:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2008. [2024-11-09 05:29:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1421 states have (on average 1.2406755805770584) internal successors, (1763), 1540 states have internal predecessors, (1763), 314 states have call successors, (314), 283 states have call predecessors, (314), 272 states have return successors, (376), 281 states have call predecessors, (376), 314 states have call successors, (376) [2024-11-09 05:29:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2453 transitions. [2024-11-09 05:29:28,384 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2453 transitions. Word has length 126 [2024-11-09 05:29:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:28,384 INFO L471 AbstractCegarLoop]: Abstraction has 2008 states and 2453 transitions. [2024-11-09 05:29:28,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.923076923076923) internal successors, (154), 27 states have internal predecessors, (154), 15 states have call successors, (33), 7 states have call predecessors, (33), 12 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-09 05:29:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2453 transitions. [2024-11-09 05:29:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-09 05:29:28,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:28,392 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:28,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:29:28,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:28,596 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:29:28,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1268777149, now seen corresponding path program 1 times [2024-11-09 05:29:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:29:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374126338] [2024-11-09 05:29:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:29:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 75 proven. 67 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 05:29:29,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:29:29,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374126338] [2024-11-09 05:29:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374126338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:29:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588803646] [2024-11-09 05:29:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:29,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:29,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:29,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:29:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:29,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:29:29,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 95 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 05:29:29,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:29:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 75 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 05:29:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588803646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:29:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034282173] [2024-11-09 05:29:29,845 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2024-11-09 05:29:29,845 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:29:29,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:29:29,846 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:29:29,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:29:31,939 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 10 for LOIs [2024-11-09 05:29:31,943 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-09 05:29:32,221 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 13 for LOIs [2024-11-09 05:29:32,250 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 20 for LOIs [2024-11-09 05:29:32,290 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 24 for LOIs [2024-11-09 05:29:32,295 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2024-11-09 05:29:32,298 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 12 for LOIs [2024-11-09 05:29:32,300 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 45 for LOIs [2024-11-09 05:29:32,316 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:29:35,095 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21166#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= 1 ~systemActive~0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:29:35,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:29:35,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:29:35,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 19 [2024-11-09 05:29:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771023314] [2024-11-09 05:29:35,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:29:35,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:29:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:29:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:29:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=3175, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:29:35,099 INFO L87 Difference]: Start difference. First operand 2008 states and 2453 transitions. Second operand has 19 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 9 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (35), 10 states have call predecessors, (35), 9 states have call successors, (35) [2024-11-09 05:29:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:38,069 INFO L93 Difference]: Finished difference Result 4071 states and 5057 transitions. [2024-11-09 05:29:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 05:29:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 9 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (35), 10 states have call predecessors, (35), 9 states have call successors, (35) Word has length 152 [2024-11-09 05:29:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:38,081 INFO L225 Difference]: With dead ends: 4071 [2024-11-09 05:29:38,081 INFO L226 Difference]: Without dead ends: 2219 [2024-11-09 05:29:38,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 422 SyntacticMatches, 10 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5214 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1459, Invalid=12821, Unknown=0, NotChecked=0, Total=14280 [2024-11-09 05:29:38,091 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 674 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:38,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 506 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:29:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2024-11-09 05:29:38,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1915. [2024-11-09 05:29:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1352 states have (on average 1.220414201183432) internal successors, (1650), 1470 states have internal predecessors, (1650), 290 states have call successors, (290), 272 states have call predecessors, (290), 272 states have return successors, (319), 269 states have call predecessors, (319), 290 states have call successors, (319) [2024-11-09 05:29:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2259 transitions. [2024-11-09 05:29:38,345 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2259 transitions. Word has length 152 [2024-11-09 05:29:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:38,345 INFO L471 AbstractCegarLoop]: Abstraction has 1915 states and 2259 transitions. [2024-11-09 05:29:38,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 9 states have call successors, (34), 6 states have call predecessors, (34), 7 states have return successors, (35), 10 states have call predecessors, (35), 9 states have call successors, (35) [2024-11-09 05:29:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2259 transitions. [2024-11-09 05:29:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 05:29:38,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:29:38,352 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:38,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:29:38,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:38,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:29:38,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:29:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash -106727132, now seen corresponding path program 2 times [2024-11-09 05:29:38,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:29:38,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159757380] [2024-11-09 05:29:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:29:38,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:29:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:29:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 79 proven. 170 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 05:29:40,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:29:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159757380] [2024-11-09 05:29:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159757380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:29:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437779116] [2024-11-09 05:29:40,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:29:40,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:40,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:40,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:29:40,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:29:40,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:29:40,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:29:40,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:29:41,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:29:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-09 05:29:41,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:29:41,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437779116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:29:41,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:29:41,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [30] total 33 [2024-11-09 05:29:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547807851] [2024-11-09 05:29:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:29:41,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:29:41,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:29:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:29:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:29:41,088 INFO L87 Difference]: Start difference. First operand 1915 states and 2259 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:29:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:29:41,300 INFO L93 Difference]: Finished difference Result 2228 states and 2618 transitions. [2024-11-09 05:29:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:29:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 187 [2024-11-09 05:29:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:29:41,303 INFO L225 Difference]: With dead ends: 2228 [2024-11-09 05:29:41,303 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:29:41,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 05:29:41,309 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:29:41,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 238 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:29:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:29:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:29:41,311 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 05:29:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:29:41,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2024-11-09 05:29:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:29:41,313 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:29:41,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:29:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:29:41,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:29:41,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:29:41,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:29:41,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:29:41,520 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:29:41,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:29:56,969 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:29:56,991 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (and (= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) (and (not (= |old(~pumpRunning~0)| 0)) (= 1 ~systemActive~0) (= ~waterLevel~0 1)))) Eliminated clause: (or (and (= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) (and (not (= ~pumpRunning~0 0)) (= 1 ~systemActive~0) (= ~waterLevel~0 1))) [2024-11-09 05:29:57,007 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse1 (= 0 ~systemActive~0)) (.cse0 (= 2 ~waterLevel~0))) (and (or (and .cse0 (not .cse1)) (and (= ~pumpRunning~0 0) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)))) (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0) (or (= 1 ~systemActive~0) .cse1) (or .cse0 (< ~waterLevel~0 2)))) Eliminated clause: (let ((.cse1 (= 0 ~systemActive~0)) (.cse0 (= 2 ~waterLevel~0))) (and (or (and .cse0 (not .cse1)) (and (= ~pumpRunning~0 0) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)))) (or (= 1 ~systemActive~0) .cse1) (or .cse0 (< ~waterLevel~0 2)))) [2024-11-09 05:29:57,017 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= |old(~waterLevel~0)| 2)) (.cse1 (= |old(~waterLevel~0)| 1))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse0)) (or (not .cse1) (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (let ((.cse2 (= 1 ~systemActive~0)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse4 (= 0 ~systemActive~0))) (or (and .cse1 .cse2 .cse3) (and .cse3 .cse4 .cse0) (and .cse2 .cse0) (and .cse1 .cse3 .cse4))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse0 (= |old(~waterLevel~0)| 2)) (.cse1 (= |old(~waterLevel~0)| 1))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse0)) (or (not .cse1) (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (let ((.cse2 (= 1 ~systemActive~0)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse4 (= 0 ~systemActive~0))) (or (and .cse1 .cse2 .cse3) (and .cse3 .cse4 .cse0) (and .cse2 .cse0) (and .cse1 .cse3 .cse4)))))) [2024-11-09 05:29:57,033 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:29:57,037 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (or (and (<= 2 ~waterLevel~0) (<= ~waterLevel~0 2)) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0)) Eliminated clause: (and (= ~pumpRunning~0 0) (or (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0)) [2024-11-09 05:29:57,047 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |old(~waterLevel~0)| 1)) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 (= 0 ~systemActive~0) (<= |old(~waterLevel~0)| 2) (or (< 1 |old(~waterLevel~0)|) .cse1)) (and .cse0 .cse1 .cse2) (and .cse2 (= |old(~waterLevel~0)| 2)))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse2 (= ~waterLevel~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1) (and .cse0 (or .cse3 .cse2) (<= ~waterLevel~0 2) (= 0 ~systemActive~0)))) [2024-11-09 05:29:57,052 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (<= ~waterLevel~0 2) (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0))) Eliminated clause: (and (or (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (<= ~waterLevel~0 2) (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0))) [2024-11-09 05:29:57,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:29:57 BoogieIcfgContainer [2024-11-09 05:29:57,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:29:57,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:29:57,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:29:57,060 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:29:57,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:28:54" (3/4) ... [2024-11-09 05:29:57,064 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:29:57,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 05:29:57,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:29:57,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:29:57,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:29:57,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:29:57,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:29:57,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:29:57,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 05:29:57,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 05:29:57,077 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-09 05:29:57,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 05:29:57,078 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:29:57,079 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:29:57,079 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:29:57,107 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning)) && (2 == waterLevel)) || (\old(waterLevel) != 2)) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && (\old(waterLevel) == 2))) || ((1 == systemActive) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 == systemActive)))) [2024-11-09 05:29:57,155 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning)) && (2 == waterLevel)) || (\old(waterLevel) != 2)) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && (\old(waterLevel) == 2))) || ((1 == systemActive) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 == systemActive)))) [2024-11-09 05:29:57,217 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:29:57,218 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:29:57,218 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:29:57,219 INFO L158 Benchmark]: Toolchain (without parser) took 64726.87ms. Allocated memory was 159.4MB in the beginning and 897.6MB in the end (delta: 738.2MB). Free memory was 125.1MB in the beginning and 699.6MB in the end (delta: -574.5MB). Peak memory consumption was 162.9MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,219 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:29:57,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.87ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 114.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.89ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 111.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,220 INFO L158 Benchmark]: Boogie Preprocessor took 39.85ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,221 INFO L158 Benchmark]: RCFGBuilder took 768.28ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 79.7MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,222 INFO L158 Benchmark]: TraceAbstraction took 63031.84ms. Allocated memory was 159.4MB in the beginning and 897.6MB in the end (delta: 738.2MB). Free memory was 79.0MB in the beginning and 708.0MB in the end (delta: -628.9MB). Peak memory consumption was 502.1MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,222 INFO L158 Benchmark]: Witness Printer took 158.39ms. Allocated memory is still 897.6MB. Free memory was 708.0MB in the beginning and 699.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:29:57,225 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.87ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 114.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.89ms. Allocated memory is still 159.4MB. Free memory was 114.6MB in the beginning and 111.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.85ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 110.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 768.28ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 79.7MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 63031.84ms. Allocated memory was 159.4MB in the beginning and 897.6MB in the end (delta: 738.2MB). Free memory was 79.0MB in the beginning and 708.0MB in the end (delta: -628.9MB). Peak memory consumption was 502.1MB. Max. memory is 16.1GB. * Witness Printer took 158.39ms. Allocated memory is still 897.6MB. Free memory was 708.0MB in the beginning and 699.6MB 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,"Test.i","") [49] - GenericResultAtLocation [Line: 153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [153] - GenericResultAtLocation [Line: 162]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [162] - GenericResultAtLocation [Line: 190]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [190] - GenericResultAtLocation [Line: 261]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [261] - GenericResultAtLocation [Line: 531]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [531] - GenericResultAtLocation [Line: 897]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [897] - GenericResultAtLocation [Line: 1000]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1000] - 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: 158]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.4s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3583 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3550 mSDsluCounter, 4619 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3669 mSDsCounter, 1884 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7742 IncrementalHoareTripleChecker+Invalid, 9626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1884 mSolverCounterUnsat, 950 mSDtfsCounter, 7742 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1709 GetRequests, 1219 SyntacticMatches, 29 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20329 ImplicationChecksByTransitivity, 22.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2008occurred in iteration=10, InterpolantAutomatonStates: 288, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 999 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1389 NumberOfCodeBlocks, 1274 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1718 ConstructedInterpolants, 0 QuantifiedInterpolants, 4913 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1596 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 1389/1755 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: 202]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 414]: Location Invariant Derived location invariant: (((2 == waterLevel) && (1 == systemActive)) || (((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1))) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0) && (2 == waterLevel)) && (splverifierCounter == 0)) && (0 == systemActive)) || ((((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive)) && (waterLevel == 1))) || (((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 272]: Location Invariant Derived location invariant: (((((pumpRunning == \old(pumpRunning)) && (2 == waterLevel)) || (\old(waterLevel) != 2)) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && (\old(waterLevel) == 2))) || ((1 == systemActive) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 == systemActive)))) - ProcedureContractResult [Line: 406]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((2 == waterLevel) && (0 != systemActive)) || (((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1))) Ensures: ((((pumpRunning == 0) && ((2 == waterLevel) || (((\old(pumpRunning) != 0) && (1 == systemActive)) && (waterLevel == 1)))) && (0 != systemActive)) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 296]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 924]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((2 == waterLevel) && (0 != systemActive)) || ((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1)))) && ((1 == systemActive) || (0 == systemActive))) && ((2 == waterLevel) || (waterLevel < 2))) Ensures: ((((((\old(methaneLevelCritical) != 0) || (methaneLevelCritical == 1)) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((1 == systemActive) || (0 == systemActive))) && ((((2 == waterLevel) && (0 != systemActive)) || ((pumpRunning == 0) && (2 == waterLevel))) || ((pumpRunning == 0) && (waterLevel == 1)))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 272]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((((\old(pumpRunning) != 0) || (2 == waterLevel)) || (1 != systemActive)) || (methaneLevelCritical != 0)) || (\old(waterLevel) != 2)) && (((((2 == waterLevel) && (1 == systemActive)) && (\old(waterLevel) == 2)) || (methaneLevelCritical != 0)) || ((pumpRunning == 0) && ((2 == waterLevel) || (waterLevel == 1))))) && ((((((2 == waterLevel) && ((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical != 1))) && (\old(waterLevel) == 2)) || (methaneLevelCritical == 0)) || (1 != systemActive)) || ((pumpRunning == 0) && (waterLevel == 1)))) && (((\old(waterLevel) < 2) || ((pumpRunning == 0) && (2 == waterLevel))) || (0 != systemActive))) && ((1 < \old(waterLevel)) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && (\old(waterLevel) == 2))) || ((1 == systemActive) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 == systemActive)))) && (((((\old(pumpRunning) != 0) || (methaneLevelCritical == 0)) || (1 != systemActive)) || ((2 == waterLevel) && ((pumpRunning == 0) || (methaneLevelCritical != 1)))) || (\old(waterLevel) != 2))) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 52]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 304]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (((pumpRunning == 0) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) Ensures: (((((((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel == 1))) && ((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical != 1))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 912]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((2 == waterLevel) && (1 == systemActive))) || ((((pumpRunning == 0) && ((2 == waterLevel) || (waterLevel == 1))) && (waterLevel <= 2)) && (0 == systemActive))) Ensures: (((((2 == waterLevel) && ((((1 == systemActive) && (\old(waterLevel) == 2)) || ((pumpRunning == 0) && (1 == systemActive))) || ((pumpRunning == 0) && (0 == systemActive)))) && ((\old(waterLevel) < 2) || (\old(waterLevel) == 2))) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 330]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: (((((2 == waterLevel) || (waterLevel == 1)) && (1 == systemActive)) && (waterLevel <= 2)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) Ensures: ((((((1 < waterLevel) || (waterLevel == 1)) && ((((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2)) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)))) && ((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical != 1))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 414]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((2 == waterLevel) && (1 == systemActive)) || (((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1))) Ensures: ((((methaneLevelCritical == \result) && ((pumpRunning != 0) || (2 == waterLevel))) && (((2 == waterLevel) && (1 == systemActive)) || ((1 == systemActive) && (waterLevel == 1)))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:29:57,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eef636-6b7b-4672-a9b0-f7d6fa8d2079/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