./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product50.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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/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 d44823aac48cec2911f68e219166f3ac1836e56b97e3a905bce4580d699376f2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:41:24,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:41:24,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:41:24,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:41:24,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:41:24,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:41:24,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:41:24,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:41:24,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:41:24,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:41:24,269 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:41:24,269 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:41:24,269 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:41:24,272 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:41:24,272 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:41:24,273 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:41:24,273 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:41:24,273 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:41:24,274 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:41:24,274 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:41:24,274 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:41:24,275 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:41:24,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:41:24,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:41:24,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:41:24,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:41:24,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:41:24,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:41:24,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:41:24,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:41:24,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:41:24,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:41:24,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:41:24,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:41:24,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:41:24,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:41:24,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:41:24,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:41:24,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:41:24,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:41:24,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:41:24,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:41:24,283 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:41:24,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:41:24,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:41:24,284 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:41:24,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:41:24,285 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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d44823aac48cec2911f68e219166f3ac1836e56b97e3a905bce4580d699376f2 [2024-11-09 05:41:24,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:41:24,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:41:24,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:41:24,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:41:24,564 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:41:24,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec4_product50.cil.c Unable to find full path for "g++" [2024-11-09 05:41:26,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:41:26,818 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:41:26,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/sv-benchmarks/c/product-lines/minepump_spec4_product50.cil.c [2024-11-09 05:41:26,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/data/fc0b6a6bc/ceb56079a81a4acebbec0501bff1346d/FLAG7213bbcf3 [2024-11-09 05:41:26,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/data/fc0b6a6bc/ceb56079a81a4acebbec0501bff1346d [2024-11-09 05:41:26,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:41:26,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:41:26,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:41:26,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:41:26,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:41:26,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:41:26" (1/1) ... [2024-11-09 05:41:26,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3d0308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:26, skipping insertion in model container [2024-11-09 05:41:26,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:41:26" (1/1) ... [2024-11-09 05:41:26,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:41:27,215 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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/sv-benchmarks/c/product-lines/minepump_spec4_product50.cil.c[13010,13023] [2024-11-09 05:41:27,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:41:27,254 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:41:27,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-09 05:41:27,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [415] [2024-11-09 05:41:27,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [444] [2024-11-09 05:41:27,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [548] [2024-11-09 05:41:27,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [557] [2024-11-09 05:41:27,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [592] [2024-11-09 05:41:27,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [700] [2024-11-09 05:41:27,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [908] [2024-11-09 05:41:27,310 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_e15abc0b-0c69-4aa4-b020-f6f9d643f091/sv-benchmarks/c/product-lines/minepump_spec4_product50.cil.c[13010,13023] [2024-11-09 05:41:27,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:41:27,351 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:41:27,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27 WrapperNode [2024-11-09 05:41:27,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:41:27,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:41:27,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:41:27,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:41:27,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,403 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 206 [2024-11-09 05:41:27,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:41:27,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:41:27,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:41:27,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:41:27,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:41:27,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:41:27,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:41:27,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:41:27,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (1/1) ... [2024-11-09 05:41:27,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:41:27,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:27,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:41:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:41:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:41:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:41:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:41:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:41:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:41:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:41:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:41:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:41:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:41:27,626 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:41:27,629 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:41:27,932 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-09 05:41:27,933 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:41:28,085 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:41:28,085 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:41:28,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:28 BoogieIcfgContainer [2024-11-09 05:41:28,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:41:28,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:41:28,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:41:28,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:41:28,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:41:26" (1/3) ... [2024-11-09 05:41:28,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cb650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:41:28, skipping insertion in model container [2024-11-09 05:41:28,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:27" (2/3) ... [2024-11-09 05:41:28,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cb650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:41:28, skipping insertion in model container [2024-11-09 05:41:28,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:28" (3/3) ... [2024-11-09 05:41:28,096 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2024-11-09 05:41:28,116 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:41:28,116 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:41:28,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:41:28,187 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;@2de2bdce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:41:28,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:41:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:41:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:41:28,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:28,206 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:28,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:28,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash -76401781, now seen corresponding path program 1 times [2024-11-09 05:41:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896572342] [2024-11-09 05:41:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:28,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:28,449 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 05:41:28,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896572342] [2024-11-09 05:41:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896572342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:41:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838298676] [2024-11-09 05:41:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:28,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:41:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:41:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:41:28,491 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) 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 05:41:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:28,571 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2024-11-09 05:41:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:41:28,575 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 05:41:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:28,585 INFO L225 Difference]: With dead ends: 100 [2024-11-09 05:41:28,585 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 05:41:28,589 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 05:41:28,595 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:28,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:41:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 05:41:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-09 05:41:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:41:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-11-09 05:41:28,647 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 12 [2024-11-09 05:41:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:28,650 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-11-09 05:41:28,651 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 05:41:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-11-09 05:41:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:41:28,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:28,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:28,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:41:28,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:28,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2129051588, now seen corresponding path program 1 times [2024-11-09 05:41:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845932581] [2024-11-09 05:41:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:28,816 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 05:41:28,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845932581] [2024-11-09 05:41:28,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845932581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:28,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:41:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371721068] [2024-11-09 05:41:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:28,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:28,822 INFO L87 Difference]: Start difference. First operand 46 states and 59 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 05:41:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:28,868 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2024-11-09 05:41:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:28,869 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 05:41:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:28,870 INFO L225 Difference]: With dead ends: 69 [2024-11-09 05:41:28,871 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:41:28,871 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 05:41:28,873 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:28,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:41:28,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:41:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:41:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 05:41:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-09 05:41:28,882 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2024-11-09 05:41:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:28,883 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-09 05:41:28,883 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 05:41:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-09 05:41:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:41:28,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:28,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:28,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:41:28,885 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:28,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash -498214588, now seen corresponding path program 1 times [2024-11-09 05:41:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:28,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684117939] [2024-11-09 05:41:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:29,206 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 05:41:29,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684117939] [2024-11-09 05:41:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684117939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:29,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:29,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:41:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699422461] [2024-11-09 05:41:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:29,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:41:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:29,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:41:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:41:29,210 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:29,417 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2024-11-09 05:41:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:41:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 05:41:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:29,420 INFO L225 Difference]: With dead ends: 123 [2024-11-09 05:41:29,422 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 05:41:29,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:41:29,424 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:29,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 142 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:41:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 05:41:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2024-11-09 05:41:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 58 states have internal predecessors, (62), 11 states have call successors, (11), 9 states have call predecessors, (11), 11 states have return successors, (13), 10 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-09 05:41:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2024-11-09 05:41:29,454 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 15 [2024-11-09 05:41:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:29,454 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2024-11-09 05:41:29,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2024-11-09 05:41:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:41:29,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:29,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:29,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:41:29,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:29,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:29,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1584905026, now seen corresponding path program 1 times [2024-11-09 05:41:29,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:29,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535829853] [2024-11-09 05:41:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:29,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:29,591 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 05:41:29,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535829853] [2024-11-09 05:41:29,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535829853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:29,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:41:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228313318] [2024-11-09 05:41:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:29,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:41:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:41:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:41:29,596 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:41:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:29,708 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2024-11-09 05:41:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:41:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 05:41:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:29,714 INFO L225 Difference]: With dead ends: 136 [2024-11-09 05:41:29,714 INFO L226 Difference]: Without dead ends: 100 [2024-11-09 05:41:29,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:41:29,718 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:29,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 99 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-09 05:41:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-09 05:41:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 78 states have internal predecessors, (86), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-09 05:41:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-11-09 05:41:29,747 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 18 [2024-11-09 05:41:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:29,753 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-11-09 05:41:29,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:41:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-11-09 05:41:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:41:29,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:29,756 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] [2024-11-09 05:41:29,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:41:29,756 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:29,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:29,757 INFO L85 PathProgramCache]: Analyzing trace with hash 380652696, now seen corresponding path program 1 times [2024-11-09 05:41:29,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:29,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104821337] [2024-11-09 05:41:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:29,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:30,085 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 05:41:30,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104821337] [2024-11-09 05:41:30,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104821337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:30,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:30,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:41:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127416739] [2024-11-09 05:41:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:30,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:41:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:41:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:41:30,089 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:41:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:30,495 INFO L93 Difference]: Finished difference Result 251 states and 316 transitions. [2024-11-09 05:41:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:41:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-09 05:41:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:30,498 INFO L225 Difference]: With dead ends: 251 [2024-11-09 05:41:30,498 INFO L226 Difference]: Without dead ends: 187 [2024-11-09 05:41:30,499 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 05:41:30,500 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 175 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:30,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 166 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:41:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-09 05:41:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 168. [2024-11-09 05:41:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 116 states have (on average 1.25) internal successors, (145), 132 states have internal predecessors, (145), 24 states have call successors, (24), 22 states have call predecessors, (24), 27 states have return successors, (35), 26 states have call predecessors, (35), 24 states have call successors, (35) [2024-11-09 05:41:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 204 transitions. [2024-11-09 05:41:30,531 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 204 transitions. Word has length 26 [2024-11-09 05:41:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:30,531 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 204 transitions. [2024-11-09 05:41:30,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:41:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 204 transitions. [2024-11-09 05:41:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 05:41:30,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:30,534 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] [2024-11-09 05:41:30,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:41:30,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:30,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 978163262, now seen corresponding path program 1 times [2024-11-09 05:41:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:30,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097229684] [2024-11-09 05:41:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:30,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097229684] [2024-11-09 05:41:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097229684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:41:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969692792] [2024-11-09 05:41:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:30,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:41:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:41:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:41:30,925 INFO L87 Difference]: Start difference. First operand 168 states and 204 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:41:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:31,281 INFO L93 Difference]: Finished difference Result 280 states and 349 transitions. [2024-11-09 05:41:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:41:31,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-09 05:41:31,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:31,284 INFO L225 Difference]: With dead ends: 280 [2024-11-09 05:41:31,284 INFO L226 Difference]: Without dead ends: 209 [2024-11-09 05:41:31,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:41:31,289 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:31,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 146 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:41:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-09 05:41:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 169. [2024-11-09 05:41:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 132 states have internal predecessors, (147), 24 states have call successors, (24), 22 states have call predecessors, (24), 27 states have return successors, (36), 26 states have call predecessors, (36), 24 states have call successors, (36) [2024-11-09 05:41:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2024-11-09 05:41:31,322 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 36 [2024-11-09 05:41:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:31,322 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2024-11-09 05:41:31,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:41:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2024-11-09 05:41:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:41:31,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:31,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:31,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:41:31,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:31,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash 595164928, now seen corresponding path program 1 times [2024-11-09 05:41:31,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:31,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384489474] [2024-11-09 05:41:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:31,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:31,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:31,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384489474] [2024-11-09 05:41:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384489474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:31,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:41:31,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637950253] [2024-11-09 05:41:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:31,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:41:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:41:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:41:31,456 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:41:31,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:31,561 INFO L93 Difference]: Finished difference Result 336 states and 417 transitions. [2024-11-09 05:41:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:41:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-09 05:41:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:31,564 INFO L225 Difference]: With dead ends: 336 [2024-11-09 05:41:31,564 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 05:41:31,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 05:41:31,567 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:31,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:41:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 05:41:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-09 05:41:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 132 states have internal predecessors, (142), 24 states have call successors, (24), 22 states have call predecessors, (24), 27 states have return successors, (36), 26 states have call predecessors, (36), 24 states have call successors, (36) [2024-11-09 05:41:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2024-11-09 05:41:31,607 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 39 [2024-11-09 05:41:31,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:31,608 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2024-11-09 05:41:31,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:41:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2024-11-09 05:41:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:41:31,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:31,610 INFO L215 NwaCegarLoop]: trace histogram [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 05:41:31,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:41:31,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:31,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:31,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1980330582, now seen corresponding path program 1 times [2024-11-09 05:41:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:31,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601123138] [2024-11-09 05:41:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:41:31,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:31,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601123138] [2024-11-09 05:41:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601123138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695861431] [2024-11-09 05:41:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:31,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:31,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:31,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:41:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:31,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:41:31,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:31,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:41:31,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695861431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:31,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:41:31,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 05:41:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399168492] [2024-11-09 05:41:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:31,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:41:31,928 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:41:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:31,995 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2024-11-09 05:41:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-09 05:41:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:31,998 INFO L225 Difference]: With dead ends: 253 [2024-11-09 05:41:31,999 INFO L226 Difference]: Without dead ends: 168 [2024-11-09 05:41:32,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:41:32,002 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:32,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 74 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:41:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-09 05:41:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-09 05:41:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 117 states have (on average 1.188034188034188) internal successors, (139), 131 states have internal predecessors, (139), 23 states have call successors, (23), 22 states have call predecessors, (23), 27 states have return successors, (29), 25 states have call predecessors, (29), 23 states have call successors, (29) [2024-11-09 05:41:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 191 transitions. [2024-11-09 05:41:32,041 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 191 transitions. Word has length 47 [2024-11-09 05:41:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:32,042 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 191 transitions. [2024-11-09 05:41:32,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:41:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 191 transitions. [2024-11-09 05:41:32,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 05:41:32,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:32,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:32,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:41:32,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:32,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:32,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1706299916, now seen corresponding path program 1 times [2024-11-09 05:41:32,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:32,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557229432] [2024-11-09 05:41:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:41:32,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557229432] [2024-11-09 05:41:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557229432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135661825] [2024-11-09 05:41:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:32,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:32,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:32,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:41:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:32,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:41:32,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:33,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:41:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:41:33,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135661825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:41:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [180065460] [2024-11-09 05:41:33,995 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:41:33,995 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:41:33,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:41:34,003 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:41:34,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:41:41,566 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2024-11-09 05:41:41,666 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-09 05:41:41,867 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 45 for LOIs [2024-11-09 05:41:41,988 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 37 for LOIs [2024-11-09 05:41:41,995 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:41:44,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4222#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:41:44,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:41:44,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:41:44,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 28 [2024-11-09 05:41:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105790850] [2024-11-09 05:41:44,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:41:44,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:41:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:41:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2073, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 05:41:44,943 INFO L87 Difference]: Start difference. First operand 168 states and 191 transitions. Second operand has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 05:41:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:46,542 INFO L93 Difference]: Finished difference Result 381 states and 440 transitions. [2024-11-09 05:41:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 05:41:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 50 [2024-11-09 05:41:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:46,545 INFO L225 Difference]: With dead ends: 381 [2024-11-09 05:41:46,546 INFO L226 Difference]: Without dead ends: 299 [2024-11-09 05:41:46,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 111 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=943, Invalid=5377, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 05:41:46,550 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 593 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:46,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 450 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:41:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-09 05:41:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 203. [2024-11-09 05:41:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 157 states have internal predecessors, (166), 26 states have call successors, (26), 26 states have call predecessors, (26), 33 states have return successors, (33), 30 states have call predecessors, (33), 26 states have call successors, (33) [2024-11-09 05:41:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 225 transitions. [2024-11-09 05:41:46,585 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 225 transitions. Word has length 50 [2024-11-09 05:41:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:46,585 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 225 transitions. [2024-11-09 05:41:46,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 05:41:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 225 transitions. [2024-11-09 05:41:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:41:46,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:46,589 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:46,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:41:46,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:46,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:46,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash 6907889, now seen corresponding path program 1 times [2024-11-09 05:41:46,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:46,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426950293] [2024-11-09 05:41:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:41:47,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426950293] [2024-11-09 05:41:47,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426950293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064025616] [2024-11-09 05:41:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:47,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:47,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:47,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:47,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:41:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:47,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:41:47,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:41:48,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:41:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:41:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064025616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:41:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1458688329] [2024-11-09 05:41:48,927 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:41:48,929 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:41:48,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:41:48,931 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:41:48,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:41:54,693 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2024-11-09 05:41:54,787 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-09 05:41:54,891 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 45 for LOIs [2024-11-09 05:41:54,961 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 37 for LOIs [2024-11-09 05:41:54,965 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:41:57,487 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5715#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:41:57,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:41:57,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:41:57,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 38 [2024-11-09 05:41:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996329640] [2024-11-09 05:41:57,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:41:57,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 05:41:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 05:41:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=2970, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:41:57,492 INFO L87 Difference]: Start difference. First operand 203 states and 225 transitions. Second operand has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 16 states have call successors, (21), 8 states have call predecessors, (21), 15 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-09 05:41:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:58,116 INFO L93 Difference]: Finished difference Result 276 states and 309 transitions. [2024-11-09 05:41:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:41:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 16 states have call successors, (21), 8 states have call predecessors, (21), 15 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) Word has length 87 [2024-11-09 05:41:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:58,118 INFO L225 Difference]: With dead ends: 276 [2024-11-09 05:41:58,118 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:41:58,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 215 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=700, Invalid=3856, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 05:41:58,121 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 274 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:58,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 253 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:41:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:41:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:41:58,122 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 05:41:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:41:58,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2024-11-09 05:41:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:58,123 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:41:58,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 4.138888888888889) internal successors, (149), 36 states have internal predecessors, (149), 16 states have call successors, (21), 8 states have call predecessors, (21), 15 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-09 05:41:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:41:58,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:41:58,126 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:41:58,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:41:58,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:58,330 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:58,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:41:59,546 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:41:59,579 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse3 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse6 (= |old(~waterLevel~0)| 1)) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 2 ~waterLevel~0))) (and (or (not .cse0) (and .cse1 .cse2) (not .cse3)) (let ((.cse5 (not (= 0 ~systemActive~0)))) (or (and .cse4 .cse5 .cse3) (and .cse0 .cse5 .cse3) (and .cse6 .cse0 .cse5))) (or (not .cse6) (and .cse1 (= ~waterLevel~0 1))) (or (not .cse4) (and .cse2 (= ~pumpRunning~0 1))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse3 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse6 (= |old(~waterLevel~0)| 1)) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 2 ~waterLevel~0))) (and (or (not .cse0) (and .cse1 .cse2) (not .cse3)) (let ((.cse5 (not (= 0 ~systemActive~0)))) (or (and .cse4 .cse5 .cse3) (and .cse0 .cse5 .cse3) (and .cse6 .cse0 .cse5))) (or (not .cse6) (and .cse1 (= ~waterLevel~0 1))) (or (not .cse4) (and .cse2 (= ~pumpRunning~0 1)))))) [2024-11-09 05:41:59,585 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:41:59,589 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse1)))) Eliminated clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= 2 ~waterLevel~0) .cse0) (and (= ~waterLevel~0 1) .cse0)))) [2024-11-09 05:41:59,605 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse0 (= |old(~waterLevel~0)| 1)) (.cse1 (= |old(~waterLevel~0)| 2))) (and (or (not .cse0) (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) (not .cse1)) (let ((.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~pumpRunning~0 0) .cse0 .cse2) (and .cse2 .cse1 (= ~pumpRunning~0 1)))))) Eliminated clause: (exists ((|old(~waterLevel~0)| Int)) (let ((.cse0 (= |old(~waterLevel~0)| 1)) (.cse1 (= |old(~waterLevel~0)| 2))) (and (or (not .cse0) (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) (not .cse1)) (let ((.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~pumpRunning~0 0) .cse0 .cse2) (and .cse2 .cse1 (= ~pumpRunning~0 1))))))) [2024-11-09 05:41:59,607 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:41:59,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:41:59 BoogieIcfgContainer [2024-11-09 05:41:59,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:41:59,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:41:59,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:41:59,609 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:41:59,609 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:28" (3/4) ... [2024-11-09 05:41:59,612 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:41:59,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:41:59,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:41:59,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:41:59,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:41:59,617 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:41:59,617 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:41:59,624 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-09 05:41:59,624 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 05:41:59,624 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:41:59,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:41:59,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:41:59,653 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((\old(pumpRunning) == 1) && (0 != systemActive)) && (\old(waterLevel) == 2)) || (((\old(pumpRunning) == 0) && (0 != systemActive)) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 != systemActive)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) [2024-11-09 05:41:59,681 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((\old(pumpRunning) == 1) && (0 != systemActive)) && (\old(waterLevel) == 2)) || (((\old(pumpRunning) == 0) && (0 != systemActive)) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 != systemActive)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) [2024-11-09 05:41:59,728 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:41:59,729 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:41:59,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:41:59,729 INFO L158 Benchmark]: Toolchain (without parser) took 32879.22ms. Allocated memory was 136.3MB in the beginning and 918.6MB in the end (delta: 782.2MB). Free memory was 103.2MB in the beginning and 438.5MB in the end (delta: -335.3MB). Peak memory consumption was 449.2MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,730 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:41:59,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.39ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 81.4MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.51ms. Allocated memory is still 136.3MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,731 INFO L158 Benchmark]: Boogie Preprocessor took 52.16ms. Allocated memory is still 136.3MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:41:59,731 INFO L158 Benchmark]: RCFGBuilder took 628.55ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 77.2MB in the beginning and 150.2MB in the end (delta: -73.0MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,732 INFO L158 Benchmark]: TraceAbstraction took 31519.83ms. Allocated memory was 197.1MB in the beginning and 918.6MB in the end (delta: 721.4MB). Free memory was 149.3MB in the beginning and 445.9MB in the end (delta: -296.6MB). Peak memory consumption was 424.7MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,732 INFO L158 Benchmark]: Witness Printer took 120.15ms. Allocated memory is still 918.6MB. Free memory was 445.9MB in the beginning and 438.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:41:59,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.39ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 81.4MB in the end (delta: 21.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.51ms. Allocated memory is still 136.3MB. Free memory was 81.0MB in the beginning and 78.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.16ms. Allocated memory is still 136.3MB. Free memory was 78.9MB in the beginning and 77.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 628.55ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 77.2MB in the beginning and 150.2MB in the end (delta: -73.0MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * TraceAbstraction took 31519.83ms. Allocated memory was 197.1MB in the beginning and 918.6MB in the end (delta: 721.4MB). Free memory was 149.3MB in the beginning and 445.9MB in the end (delta: -296.6MB). Peak memory consumption was 424.7MB. Max. memory is 16.1GB. * Witness Printer took 120.15ms. Allocated memory is still 918.6MB. Free memory was 445.9MB in the beginning and 438.5MB in the end (delta: 7.3MB). 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,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [415] - GenericResultAtLocation [Line: 444]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [444] - GenericResultAtLocation [Line: 548]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [548] - GenericResultAtLocation [Line: 557]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [557] - GenericResultAtLocation [Line: 592]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [592] - GenericResultAtLocation [Line: 700]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [700] - GenericResultAtLocation [Line: 908]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [908] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 553]: 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.2s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1260 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1236 mSDsluCounter, 1498 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1090 mSDsCounter, 643 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2019 IncrementalHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 643 mSolverCounterUnsat, 408 mSDtfsCounter, 2019 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 597 GetRequests, 397 SyntacticMatches, 21 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=9, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 170 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 527 NumberOfCodeBlocks, 527 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 649 ConstructedInterpolants, 0 QuantifiedInterpolants, 2789 SizeOfPredicates, 13 NumberOfNonLiveVariables, 717 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 269/408 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: 457]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 919]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (splverifierCounter == 0)) && (waterLevel == 1)) && (0 != systemActive)) || ((((2 == waterLevel) && (splverifierCounter == 0)) && (0 != systemActive)) && (pumpRunning == 1))) - InvariantResult [Line: 918]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 707]: Location Invariant Derived location invariant: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((\old(pumpRunning) == 1) && (0 != systemActive)) && (\old(waterLevel) == 2)) || (((\old(pumpRunning) == 0) && (0 != systemActive)) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 != systemActive)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) - ProcedureContractResult [Line: 731]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) Ensures: ((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 624]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || (((2 == waterLevel) && (0 != systemActive)) && (pumpRunning == 1))) Ensures: ((((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || (((2 == waterLevel) && (0 != systemActive)) && (pumpRunning == 1))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 707]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((\old(pumpRunning) != 1) || ((pumpRunning == 0) && (waterLevel == 1))) && (((((\old(pumpRunning) == 1) && (0 != systemActive)) && (\old(waterLevel) == 2)) || (((\old(pumpRunning) == 0) && (0 != systemActive)) && (\old(waterLevel) == 2))) || (((\old(waterLevel) == 1) && (\old(pumpRunning) == 0)) && (0 != systemActive)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 2)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 447]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 739]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: ((pumpRunning == 0) && (((2 == waterLevel) && (0 != systemActive)) || ((waterLevel == 1) && (0 != systemActive)))) Ensures: (((((2 != waterLevel) || (pumpRunning == 1)) && ((waterLevel != 1) || (pumpRunning == 0))) && ((((2 == waterLevel) && (\old(pumpRunning) == 0)) && (0 != systemActive)) || (((\old(pumpRunning) == 0) && (waterLevel == 1)) && (0 != systemActive)))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 612]: Procedure Contract for waterRise Derived contract for procedure waterRise. Ensures: (((2 == waterLevel) && ((((pumpRunning == 0) && (\old(waterLevel) == 1)) && (0 != systemActive)) || (((0 != systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && (((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:41:59,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15abc0b-0c69-4aa4-b020-f6f9d643f091/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