./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 5ed8e4dea18b15d78522f05bcbacefb8bf743c0552ef5a7415602905a04fdc4c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:17:20,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:17:20,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:17:20,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:17:20,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:17:20,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:17:20,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:17:20,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:17:20,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:17:20,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:17:20,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:17:20,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:17:20,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:17:20,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:17:20,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:17:20,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:17:20,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:17:20,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:17:20,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:17:20,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:17:20,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:17:20,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:17:20,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:17:20,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:17:20,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:17:20,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:17:20,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:17:20,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:17:20,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:17:20,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:17:20,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:17:20,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:17:20,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:17:20,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:17:20,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:17:20,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:17:20,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:17:20,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:17:20,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:17:20,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:17:20,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:17:20,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:17:20,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:17:20,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:17:20,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:17:20,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:17:20,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:17:20,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:17:20,439 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:17:20,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:17:20,440 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:17:20,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:17:20,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:17:20,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:17:20,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:17:20,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:17:20,443 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:17:20,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:17:20,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:17:20,444 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:17:20,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:17:20,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:17:20,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:17:20,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:17:20,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:17:20,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:17:20,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:17:20,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:17:20,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:17:20,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:17:20,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:17:20,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:17:20,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:17:20,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:17:20,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:20,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:17:20,451 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:17:20,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:17:20,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:17:20,452 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:17:20,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:17:20,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:17:20,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:17:20,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed8e4dea18b15d78522f05bcbacefb8bf743c0552ef5a7415602905a04fdc4c [2022-11-19 07:17:20,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:17:20,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:17:20,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:17:20,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:17:20,819 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:17:20,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2022-11-19 07:17:20,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/data/0b63a382b/6a8855c9bde945669a7d13b69754c567/FLAGf368d44f6 [2022-11-19 07:17:21,505 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:17:21,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c [2022-11-19 07:17:21,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/data/0b63a382b/6a8855c9bde945669a7d13b69754c567/FLAGf368d44f6 [2022-11-19 07:17:21,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/data/0b63a382b/6a8855c9bde945669a7d13b69754c567 [2022-11-19 07:17:21,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:17:21,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:17:21,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:21,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:17:21,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:17:21,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:21" (1/1) ... [2022-11-19 07:17:21,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee81ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:21, skipping insertion in model container [2022-11-19 07:17:21,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:21" (1/1) ... [2022-11-19 07:17:21,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:17:21,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:17:22,110 WARN L234 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_4d7111f5-000d-4da6-860f-0c0b9bba5de0/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1605,1618] [2022-11-19 07:17:22,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:22,253 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:17:22,287 WARN L234 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_4d7111f5-000d-4da6-860f-0c0b9bba5de0/sv-benchmarks/c/product-lines/minepump_spec1_product58.cil.c[1605,1618] [2022-11-19 07:17:22,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:22,430 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:17:22,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22 WrapperNode [2022-11-19 07:17:22,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:22,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:22,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:17:22,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:17:22,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,513 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 215 [2022-11-19 07:17:22,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:22,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:17:22,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:17:22,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:17:22,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:17:22,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:17:22,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:17:22,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:17:22,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (1/1) ... [2022-11-19 07:17:22,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:22,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:22,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:17:22,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:17:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:17:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:17:22,667 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:17:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:17:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:17:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:17:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:17:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 07:17:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 07:17:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:17:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:17:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:17:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:17:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:17:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:17:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:17:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:17:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:17:22,767 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:17:22,769 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:17:23,127 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:17:23,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:17:23,377 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:17:23,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:23 BoogieIcfgContainer [2022-11-19 07:17:23,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:17:23,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:17:23,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:17:23,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:17:23,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:17:21" (1/3) ... [2022-11-19 07:17:23,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145aab75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:23, skipping insertion in model container [2022-11-19 07:17:23,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:22" (2/3) ... [2022-11-19 07:17:23,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145aab75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:23, skipping insertion in model container [2022-11-19 07:17:23,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:23" (3/3) ... [2022-11-19 07:17:23,420 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product58.cil.c [2022-11-19 07:17:23,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:17:23,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:17:23,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:17:23,587 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5eb5fa93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:17:23,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:17:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:17:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:17:23,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:23,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:23,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:23,608 INFO L85 PathProgramCache]: Analyzing trace with hash -239157303, now seen corresponding path program 1 times [2022-11-19 07:17:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:23,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416445232] [2022-11-19 07:17:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:23,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:23,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416445232] [2022-11-19 07:17:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416445232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:23,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:23,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:17:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254669905] [2022-11-19 07:17:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:23,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:17:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:17:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:17:23,853 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:17:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:23,938 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2022-11-19 07:17:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:17:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-19 07:17:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:23,952 INFO L225 Difference]: With dead ends: 112 [2022-11-19 07:17:23,952 INFO L226 Difference]: Without dead ends: 52 [2022-11-19 07:17:23,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:17:23,961 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:23,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:23,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-19 07:17:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-19 07:17:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:17:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-19 07:17:24,016 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2022-11-19 07:17:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:24,017 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-19 07:17:24,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:17:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-19 07:17:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:17:24,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:24,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:24,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:17:24,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:24,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1782890685, now seen corresponding path program 1 times [2022-11-19 07:17:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:24,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394411267] [2022-11-19 07:17:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:24,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:24,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394411267] [2022-11-19 07:17:24,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394411267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:24,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:24,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:17:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633207211] [2022-11-19 07:17:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:24,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:24,265 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:17:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:24,355 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2022-11-19 07:17:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:24,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 07:17:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:24,359 INFO L225 Difference]: With dead ends: 81 [2022-11-19 07:17:24,361 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 07:17:24,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:24,364 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:24,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:17:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 07:17:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-19 07:17:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 07:17:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-19 07:17:24,380 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2022-11-19 07:17:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:24,380 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-19 07:17:24,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:17:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-19 07:17:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:17:24,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:24,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:17:24,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1551440202, now seen corresponding path program 1 times [2022-11-19 07:17:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:24,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929573452] [2022-11-19 07:17:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:24,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:24,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929573452] [2022-11-19 07:17:24,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929573452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:24,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:24,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:17:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600284196] [2022-11-19 07:17:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:17:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:17:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:17:24,677 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-19 07:17:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:24,892 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2022-11-19 07:17:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:17:24,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2022-11-19 07:17:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:24,895 INFO L225 Difference]: With dead ends: 126 [2022-11-19 07:17:24,896 INFO L226 Difference]: Without dead ends: 84 [2022-11-19 07:17:24,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:24,898 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:24,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 209 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:17:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-19 07:17:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-19 07:17:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 63 states have internal predecessors, (67), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-19 07:17:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-11-19 07:17:24,929 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 19 [2022-11-19 07:17:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:24,930 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-11-19 07:17:24,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-19 07:17:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-11-19 07:17:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:17:24,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:24,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:24,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:17:24,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1880661992, now seen corresponding path program 1 times [2022-11-19 07:17:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815605620] [2022-11-19 07:17:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:25,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:25,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815605620] [2022-11-19 07:17:25,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815605620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:25,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:25,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89798171] [2022-11-19 07:17:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:25,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:25,189 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:17:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:25,300 INFO L93 Difference]: Finished difference Result 222 states and 288 transitions. [2022-11-19 07:17:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:17:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-19 07:17:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:25,303 INFO L225 Difference]: With dead ends: 222 [2022-11-19 07:17:25,307 INFO L226 Difference]: Without dead ends: 144 [2022-11-19 07:17:25,308 INFO L412 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 [2022-11-19 07:17:25,313 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:25,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 129 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:17:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-19 07:17:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2022-11-19 07:17:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 104 states have internal predecessors, (116), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2022-11-19 07:17:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2022-11-19 07:17:25,371 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 22 [2022-11-19 07:17:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:25,372 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2022-11-19 07:17:25,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:17:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2022-11-19 07:17:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:17:25,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:25,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:17:25,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -381716183, now seen corresponding path program 1 times [2022-11-19 07:17:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:25,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061535050] [2022-11-19 07:17:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:17:25,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061535050] [2022-11-19 07:17:25,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061535050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:25,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:25,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:17:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537391530] [2022-11-19 07:17:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:25,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:17:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:17:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:17:25,803 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:17:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:26,079 INFO L93 Difference]: Finished difference Result 396 states and 484 transitions. [2022-11-19 07:17:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:17:26,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-19 07:17:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:26,097 INFO L225 Difference]: With dead ends: 396 [2022-11-19 07:17:26,102 INFO L226 Difference]: Without dead ends: 258 [2022-11-19 07:17:26,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:17:26,106 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:26,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 220 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:17:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-19 07:17:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 227. [2022-11-19 07:17:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 164 states have internal predecessors, (184), 35 states have call successors, (35), 35 states have call predecessors, (35), 39 states have return successors, (47), 37 states have call predecessors, (47), 35 states have call successors, (47) [2022-11-19 07:17:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 266 transitions. [2022-11-19 07:17:26,160 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 266 transitions. Word has length 34 [2022-11-19 07:17:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:26,161 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 266 transitions. [2022-11-19 07:17:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:17:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 266 transitions. [2022-11-19 07:17:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 07:17:26,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:26,164 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:17:26,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1342412146, now seen corresponding path program 1 times [2022-11-19 07:17:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785121838] [2022-11-19 07:17:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:17:26,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:26,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785121838] [2022-11-19 07:17:26,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785121838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:26,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831232515] [2022-11-19 07:17:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:26,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:26,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:26,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:17:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:26,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 07:17:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:27,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:17:27,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831232515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:27,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877632921] [2022-11-19 07:17:27,754 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-19 07:17:27,754 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:27,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:27,766 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:27,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:29,916 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 114 for LOIs [2022-11-19 07:17:29,933 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 134 for LOIs [2022-11-19 07:17:30,881 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 131 for LOIs [2022-11-19 07:17:31,553 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 43 for LOIs [2022-11-19 07:17:31,560 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 112 for LOIs [2022-11-19 07:17:31,576 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:17:44,515 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2673#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (<= 2 |old(~waterLevel~0)|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:17:44,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:17:44,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:17:44,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2022-11-19 07:17:44,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997256108] [2022-11-19 07:17:44,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:17:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:17:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:17:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2122, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:17:44,519 INFO L87 Difference]: Start difference. First operand 227 states and 266 transitions. Second operand has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-19 07:17:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:49,586 INFO L93 Difference]: Finished difference Result 956 states and 1247 transitions. [2022-11-19 07:17:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-19 07:17:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) Word has length 37 [2022-11-19 07:17:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:49,593 INFO L225 Difference]: With dead ends: 956 [2022-11-19 07:17:49,593 INFO L226 Difference]: Without dead ends: 717 [2022-11-19 07:17:49,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4837 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1541, Invalid=11569, Unknown=0, NotChecked=0, Total=13110 [2022-11-19 07:17:49,601 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 949 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:49,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 344 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:17:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-19 07:17:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 526. [2022-11-19 07:17:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 354 states have (on average 1.1751412429378532) internal successors, (416), 380 states have internal predecessors, (416), 82 states have call successors, (82), 75 states have call predecessors, (82), 89 states have return successors, (110), 88 states have call predecessors, (110), 82 states have call successors, (110) [2022-11-19 07:17:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 608 transitions. [2022-11-19 07:17:49,699 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 608 transitions. Word has length 37 [2022-11-19 07:17:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:49,699 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 608 transitions. [2022-11-19 07:17:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-19 07:17:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 608 transitions. [2022-11-19 07:17:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:17:49,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:49,702 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:49,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:49,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash -235210955, now seen corresponding path program 1 times [2022-11-19 07:17:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337485020] [2022-11-19 07:17:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:17:50,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:50,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337485020] [2022-11-19 07:17:50,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337485020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:50,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305937201] [2022-11-19 07:17:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:50,069 INFO L87 Difference]: Start difference. First operand 526 states and 608 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:17:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:50,202 INFO L93 Difference]: Finished difference Result 1037 states and 1212 transitions. [2022-11-19 07:17:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:17:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2022-11-19 07:17:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:50,209 INFO L225 Difference]: With dead ends: 1037 [2022-11-19 07:17:50,209 INFO L226 Difference]: Without dead ends: 513 [2022-11-19 07:17:50,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:17:50,215 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:50,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 71 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-19 07:17:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 481. [2022-11-19 07:17:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 322 states have (on average 1.1428571428571428) internal successors, (368), 347 states have internal predecessors, (368), 76 states have call successors, (76), 71 states have call predecessors, (76), 82 states have return successors, (96), 80 states have call predecessors, (96), 76 states have call successors, (96) [2022-11-19 07:17:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 540 transitions. [2022-11-19 07:17:50,313 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 540 transitions. Word has length 54 [2022-11-19 07:17:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:50,314 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 540 transitions. [2022-11-19 07:17:50,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:17:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 540 transitions. [2022-11-19 07:17:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:17:50,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:50,319 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:50,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:17:50,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1208317175, now seen corresponding path program 1 times [2022-11-19 07:17:50,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:50,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74067650] [2022-11-19 07:17:50,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:17:51,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74067650] [2022-11-19 07:17:51,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74067650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423309473] [2022-11-19 07:17:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:51,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:51,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:17:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:51,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-19 07:17:51,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:17:51,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:17:52,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423309473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:52,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1907007209] [2022-11-19 07:17:52,049 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-19 07:17:52,049 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:52,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:52,050 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:52,050 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:55,379 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 43 for LOIs [2022-11-19 07:17:55,389 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 42 for LOIs [2022-11-19 07:17:55,709 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2022-11-19 07:17:55,951 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 48 for LOIs [2022-11-19 07:17:55,979 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-19 07:17:55,983 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2022-11-19 07:17:55,985 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:18:01,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7893#(and (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483648)) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:18:01,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:18:01,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:18:01,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28 [2022-11-19 07:18:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039412419] [2022-11-19 07:18:01,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:18:01,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 07:18:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 07:18:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2738, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 07:18:01,213 INFO L87 Difference]: Start difference. First operand 481 states and 540 transitions. Second operand has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-19 07:18:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:03,374 INFO L93 Difference]: Finished difference Result 1614 states and 1886 transitions. [2022-11-19 07:18:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 07:18:03,375 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), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 65 [2022-11-19 07:18:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:03,383 INFO L225 Difference]: With dead ends: 1614 [2022-11-19 07:18:03,383 INFO L226 Difference]: Without dead ends: 1264 [2022-11-19 07:18:03,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3028 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=818, Invalid=5344, Unknown=0, NotChecked=0, Total=6162 [2022-11-19 07:18:03,387 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 765 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:03,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 464 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:18:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-11-19 07:18:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1095. [2022-11-19 07:18:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 738 states have (on average 1.1422764227642277) internal successors, (843), 794 states have internal predecessors, (843), 174 states have call successors, (174), 148 states have call predecessors, (174), 182 states have return successors, (242), 190 states have call predecessors, (242), 174 states have call successors, (242) [2022-11-19 07:18:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1259 transitions. [2022-11-19 07:18:03,536 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1259 transitions. Word has length 65 [2022-11-19 07:18:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:03,537 INFO L495 AbstractCegarLoop]: Abstraction has 1095 states and 1259 transitions. [2022-11-19 07:18:03,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.52) internal successors, (88), 24 states have internal predecessors, (88), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2022-11-19 07:18:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1259 transitions. [2022-11-19 07:18:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:18:03,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:03,542 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 07:18:03,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:03,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1718429194, now seen corresponding path program 1 times [2022-11-19 07:18:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:03,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575872762] [2022-11-19 07:18:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 51 proven. 53 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-19 07:18:05,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:18:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575872762] [2022-11-19 07:18:05,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575872762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:18:05,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742872685] [2022-11-19 07:18:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:05,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:05,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:18:05,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:18:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:18:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-19 07:18:05,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 81 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:18:05,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:18:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:18:07,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742872685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:18:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2097230285] [2022-11-19 07:18:07,139 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2022-11-19 07:18:07,139 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:18:07,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:18:07,140 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:18:07,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:18:11,805 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 132 for LOIs [2022-11-19 07:18:11,828 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 50 for LOIs [2022-11-19 07:18:12,213 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 21 for LOIs [2022-11-19 07:18:12,345 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 48 for LOIs [2022-11-19 07:18:12,357 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-19 07:18:12,360 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2022-11-19 07:18:12,362 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:18:19,601 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12878#(and (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 1) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| ~methaneLevelCritical~0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 2147483648)) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:18:19,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:18:19,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:18:19,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-11-19 07:18:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916133065] [2022-11-19 07:18:19,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:18:19,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 07:18:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:18:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 07:18:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=3969, Unknown=0, NotChecked=0, Total=4422 [2022-11-19 07:18:19,607 INFO L87 Difference]: Start difference. First operand 1095 states and 1259 transitions. Second operand has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-19 07:18:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:18:21,009 INFO L93 Difference]: Finished difference Result 1467 states and 1695 transitions. [2022-11-19 07:18:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 07:18:21,010 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) Word has length 114 [2022-11-19 07:18:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:18:21,013 INFO L225 Difference]: With dead ends: 1467 [2022-11-19 07:18:21,013 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:18:21,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 289 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2959 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=773, Invalid=5707, Unknown=0, NotChecked=0, Total=6480 [2022-11-19 07:18:21,021 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 518 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:18:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 298 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:18:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:18:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:18:21,023 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) [2022-11-19 07:18:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:18:21,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-11-19 07:18:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:18:21,024 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:18:21,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.571428571428571) internal successors, (160), 36 states have internal predecessors, (160), 22 states have call successors, (36), 8 states have call predecessors, (36), 14 states have return successors, (38), 18 states have call predecessors, (38), 22 states have call successors, (38) [2022-11-19 07:18:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:18:21,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:18:21,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:18:21,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:18:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:18:21,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:18:26,369 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 304 310) no Hoare annotation was computed. [2022-11-19 07:18:26,369 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 304 310) the Hoare annotation is: true [2022-11-19 07:18:26,370 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 93 104) the Hoare annotation is: (let ((.cse0 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) (not (<= 1 ~waterLevel~0)) .cse0 (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-19 07:18:26,370 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 93 104) no Hoare annotation was computed. [2022-11-19 07:18:26,370 INFO L895 garLoopResultBuilder]: At program point L506(line 506) the Hoare annotation is: (let ((.cse9 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse8 (not .cse9))) (let ((.cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (and .cse7 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse8) (and .cse9 (= ~pumpRunning~0 1))))) (.cse3 (< |old(~waterLevel~0)| 2)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse2 .cse3 .cse4 .cse5) (or (not (<= |old(~waterLevel~0)| 1)) .cse6 (and .cse0 .cse7) (not (<= 1 |old(~waterLevel~0)|)) .cse4) (or .cse1 .cse3 .cse8 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse6 .cse2 .cse3 .cse4 .cse5))))) [2022-11-19 07:18:26,370 INFO L899 garLoopResultBuilder]: For program point L506-1(line 506) no Hoare annotation was computed. [2022-11-19 07:18:26,371 INFO L899 garLoopResultBuilder]: For program point L284-1(lines 283 302) no Hoare annotation was computed. [2022-11-19 07:18:26,371 INFO L895 garLoopResultBuilder]: At program point L346(lines 346 354) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~2#1| 1)) (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-19 07:18:26,371 INFO L895 garLoopResultBuilder]: At program point L342(lines 342 359) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0))) (let ((.cse0 (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse2 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or .cse0 (and (not .cse1) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))) (< |old(~waterLevel~0)| 2) .cse2 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse2)))) [2022-11-19 07:18:26,371 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 518) no Hoare annotation was computed. [2022-11-19 07:18:26,372 INFO L895 garLoopResultBuilder]: At program point L508(lines 508 521) the Hoare annotation is: (let ((.cse18 (= ~methaneLevelCritical~0 0))) (let ((.cse17 (= ~pumpRunning~0 1)) (.cse4 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0)) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not .cse18)) (.cse15 (= ~pumpRunning~0 0)) (.cse16 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse13 (and .cse15 .cse16)) (.cse12 (and (or .cse1 .cse18) (or .cse3 (not (= |old(~pumpRunning~0)| 1))))) (.cse14 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse8 (< |old(~waterLevel~0)| 2)) (.cse5 (= 0 ~systemActive~0)) (.cse9 (not (<= |old(~waterLevel~0)| 2))) (.cse11 (not (= ~methaneLevelCritical~0 1))) (.cse10 (not .cse4)) (.cse6 (and .cse15 .cse3)) (.cse7 (and .cse18 .cse17))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse1 .cse6 .cse7 .cse8 .cse5 .cse9) (or .cse0 .cse1 .cse10 .cse2 .cse11 .cse5) (or .cse8 .cse12 .cse3 .cse4 .cse5 .cse9) (or .cse0 .cse1 .cse13 .cse2 .cse5) (or (and .cse1 .cse14) .cse13 .cse8 .cse12 .cse5 .cse9) (or (and .cse15 .cse14 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse8 .cse5 .cse9 (and .cse16 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse11) (or (and .cse4 .cse17) (and .cse10 .cse15)) (or .cse6 .cse7))))))) [2022-11-19 07:18:26,372 INFO L895 garLoopResultBuilder]: At program point L508-1(lines 500 524) the Hoare annotation is: (let ((.cse7 (= ~methaneLevelCritical~0 0))) (let ((.cse10 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (not .cse7)) (.cse2 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~6#1| 0))) (let ((.cse14 (not (= ~methaneLevelCritical~0 1))) (.cse4 (not .cse2)) (.cse8 (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~2#1| 0)) (.cse9 (< |old(~waterLevel~0)| 2)) (.cse17 (and (or .cse10 .cse7) (or .cse6 (not (= |old(~pumpRunning~0)| 1))))) (.cse11 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse13 (not (<= |old(~waterLevel~0)| 2))) (.cse15 (not (<= |old(~waterLevel~0)| 1))) (.cse5 (= ~pumpRunning~0 0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse16 (not (<= 1 |old(~waterLevel~0)|))) (.cse12 (= 0 ~systemActive~0))) (and (let ((.cse1 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse14))) (or (let ((.cse3 (= ~pumpRunning~0 1))) (and .cse0 .cse1 (or (and .cse2 .cse3) (and .cse4 .cse5)) (or (and .cse5 .cse6) (and .cse7 .cse3)) (or .cse7 (not (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret13#1| 0))) (or .cse7 (not (= |isMethaneLevelCritical_#res| 0))))) (and .cse4 .cse5 .cse8 .cse6 .cse0 .cse1) .cse9 (and .cse10 .cse5 .cse11 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse12 .cse13)) (or .cse15 .cse10 .cse16 .cse6 .cse2 .cse12) (or .cse15 .cse10 .cse16 .cse14 (and .cse4 .cse8) .cse12) (or .cse11 .cse8 .cse9 .cse17 .cse12 .cse13) (or .cse9 .cse17 .cse6 (and .cse11 .cse2) .cse12 .cse13) (or .cse15 .cse10 (and .cse5 .cse0) .cse16 .cse12))))) [2022-11-19 07:18:26,373 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-19 07:18:26,373 INFO L895 garLoopResultBuilder]: At program point L352(line 352) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0))) [2022-11-19 07:18:26,373 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 280 303) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) .cse1 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) (not (<= 1 |old(~waterLevel~0)|)) .cse1))) [2022-11-19 07:18:26,373 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 280 303) no Hoare annotation was computed. [2022-11-19 07:18:26,374 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 07:18:26,374 INFO L895 garLoopResultBuilder]: At program point L357(line 357) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) .cse2 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= |old(~pumpRunning~0)| 0)) (and .cse0 .cse1) (not (<= 1 |old(~waterLevel~0)|)) .cse2))) [2022-11-19 07:18:26,374 INFO L895 garLoopResultBuilder]: At program point L357-1(lines 338 362) the Hoare annotation is: (let ((.cse9 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse8 (not .cse9))) (let ((.cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (and .cse7 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse8) (and .cse9 (= ~pumpRunning~0 1))))) (.cse3 (< |old(~waterLevel~0)| 2)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or (and .cse0 .cse1 (= |timeShift_processEnvironment_~tmp~2#1| 1)) .cse2 .cse3 .cse4 .cse5) (or (not (<= |old(~waterLevel~0)| 1)) .cse6 (and .cse0 .cse7) (not (<= 1 |old(~waterLevel~0)|)) .cse4) (or .cse1 .cse3 .cse8 (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5) (or .cse6 .cse2 .cse3 .cse4 .cse5))))) [2022-11-19 07:18:26,374 INFO L899 garLoopResultBuilder]: For program point L291-1(lines 291 297) no Hoare annotation was computed. [2022-11-19 07:18:26,374 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2022-11-19 07:18:26,375 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 172 201) no Hoare annotation was computed. [2022-11-19 07:18:26,375 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 172 201) the Hoare annotation is: true [2022-11-19 07:18:26,375 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 190) no Hoare annotation was computed. [2022-11-19 07:18:26,375 INFO L902 garLoopResultBuilder]: At program point L186-1(lines 186 190) the Hoare annotation is: true [2022-11-19 07:18:26,375 INFO L902 garLoopResultBuilder]: At program point L182-2(lines 182 196) the Hoare annotation is: true [2022-11-19 07:18:26,376 INFO L902 garLoopResultBuilder]: At program point L178(line 178) the Hoare annotation is: true [2022-11-19 07:18:26,376 INFO L899 garLoopResultBuilder]: For program point L178-1(line 178) no Hoare annotation was computed. [2022-11-19 07:18:26,376 INFO L902 garLoopResultBuilder]: At program point L197(lines 172 201) the Hoare annotation is: true [2022-11-19 07:18:26,376 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 105 113) the Hoare annotation is: true [2022-11-19 07:18:26,376 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 105 113) no Hoare annotation was computed. [2022-11-19 07:18:26,376 INFO L902 garLoopResultBuilder]: At program point L258-2(lines 258 265) the Hoare annotation is: true [2022-11-19 07:18:26,377 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 562) no Hoare annotation was computed. [2022-11-19 07:18:26,377 INFO L895 garLoopResultBuilder]: At program point L556-1(lines 556 562) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-19 07:18:26,377 INFO L895 garLoopResultBuilder]: At program point L581(lines 536 583) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 (<= 1 ~waterLevel~0) .cse2) (and (<= 2 ~waterLevel~0) .cse1 (<= ~waterLevel~0 2) (let ((.cse3 (= ~methaneLevelCritical~0 0))) (or (and .cse0 (not .cse3)) (and .cse3 (= ~pumpRunning~0 1)))) .cse2))) [2022-11-19 07:18:26,377 INFO L895 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse1 (<= 2 ~waterLevel~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 (not .cse2) .cse3 .cse4 .cse5) (and .cse0 (<= ~waterLevel~0 1) .cse3 (<= 1 ~waterLevel~0) .cse5) (and .cse2 .cse1 .cse3 .cse4 .cse5 (= ~pumpRunning~0 1)))) [2022-11-19 07:18:26,377 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:18:26,378 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:18:26,378 INFO L895 garLoopResultBuilder]: At program point L574-2(lines 566 579) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-19 07:18:26,378 INFO L899 garLoopResultBuilder]: For program point L537(lines 536 583) no Hoare annotation was computed. [2022-11-19 07:18:26,378 INFO L895 garLoopResultBuilder]: At program point L558(line 558) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (<= 2 ~waterLevel~0) .cse0 (<= ~waterLevel~0 2) .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 (<= 1 ~waterLevel~0) .cse1))) [2022-11-19 07:18:26,378 INFO L902 garLoopResultBuilder]: At program point L587(lines 526 591) the Hoare annotation is: true [2022-11-19 07:18:26,379 INFO L899 garLoopResultBuilder]: For program point L546(lines 546 552) no Hoare annotation was computed. [2022-11-19 07:18:26,379 INFO L899 garLoopResultBuilder]: For program point L546-1(lines 546 552) no Hoare annotation was computed. [2022-11-19 07:18:26,379 INFO L895 garLoopResultBuilder]: At program point L584(lines 535 585) the Hoare annotation is: false [2022-11-19 07:18:26,379 INFO L895 garLoopResultBuilder]: At program point L258(lines 258 265) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= ~waterLevel~0 1) (not (= 0 ~systemActive~0))) [2022-11-19 07:18:26,379 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 312 336) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2))) [2022-11-19 07:18:26,379 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 328) no Hoare annotation was computed. [2022-11-19 07:18:26,380 INFO L895 garLoopResultBuilder]: At program point L316(lines 316 333) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse2) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2))) [2022-11-19 07:18:26,380 INFO L895 garLoopResultBuilder]: At program point L331(line 331) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-19 07:18:26,380 INFO L899 garLoopResultBuilder]: For program point L331-1(lines 312 336) no Hoare annotation was computed. [2022-11-19 07:18:26,380 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 312 336) no Hoare annotation was computed. [2022-11-19 07:18:26,380 INFO L895 garLoopResultBuilder]: At program point L402(line 402) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-19 07:18:26,381 INFO L895 garLoopResultBuilder]: At program point L402-1(line 402) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) .cse1) (or .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret13#1| ~methaneLevelCritical~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1))) [2022-11-19 07:18:26,381 INFO L895 garLoopResultBuilder]: At program point L326(line 326) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1) (or .cse0 (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) (not (<= ~waterLevel~0 1)) .cse1))) [2022-11-19 07:18:26,381 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 81 92) no Hoare annotation was computed. [2022-11-19 07:18:26,381 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 81 92) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0))) (and (or (let ((.cse1 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse1) (or (not .cse1) (not (= ~pumpRunning~0 1))))) (< |old(~waterLevel~0)| 2) .cse2 .cse3 (not (<= |old(~waterLevel~0)| 2))) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) .cse2 .cse3))) [2022-11-19 07:18:26,385 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:18:26,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:18:26,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:18:26 BoogieIcfgContainer [2022-11-19 07:18:26,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:18:26,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:18:26,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:18:26,416 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:18:26,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:23" (3/4) ... [2022-11-19 07:18:26,420 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:18:26,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:18:26,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:18:26,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:18:26,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:18:26,427 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-19 07:18:26,427 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:18:26,427 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:18:26,434 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2022-11-19 07:18:26,435 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-19 07:18:26,436 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:18:26,436 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:18:26,437 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:18:26,463 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(waterLevel) < 2 || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-19 07:18:26,464 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-19 07:18:26,465 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) [2022-11-19 07:18:26,465 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) [2022-11-19 07:18:26,465 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && !(methaneLevelCritical == 0))) || (methaneLevelCritical == 0 && pumpRunning == 1)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(tmp == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) && \old(waterLevel) == waterLevel + 1) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) [2022-11-19 07:18:26,466 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(aux-isMethaneLevelCritical()-aux == 0))) && (methaneLevelCritical == 0 || !(\result == 0))) || (((((!(tmp == 0) && pumpRunning == 0) && tmp___0 == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || \old(waterLevel) < 2) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || (!(tmp == 0) && tmp___0 == 0)) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || tmp___0 == 0) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel + 1 && tmp == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-19 07:18:26,466 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) [2022-11-19 07:18:26,467 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(waterLevel) < 2 || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-19 07:18:26,467 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-19 07:18:26,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:18:26,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:18:26,495 INFO L158 Benchmark]: Toolchain (without parser) took 64648.59ms. Allocated memory was 138.4MB in the beginning and 654.3MB in the end (delta: 515.9MB). Free memory was 106.5MB in the beginning and 485.1MB in the end (delta: -378.6MB). Peak memory consumption was 136.0MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,496 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 40.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:18:26,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.53ms. Allocated memory is still 138.4MB. Free memory was 106.2MB in the beginning and 107.0MB in the end (delta: -833.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.59ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 105.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,497 INFO L158 Benchmark]: Boogie Preprocessor took 64.47ms. Allocated memory is still 138.4MB. Free memory was 105.0MB in the beginning and 103.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,497 INFO L158 Benchmark]: RCFGBuilder took 805.48ms. Allocated memory is still 138.4MB. Free memory was 102.9MB in the beginning and 78.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,498 INFO L158 Benchmark]: TraceAbstraction took 63019.30ms. Allocated memory was 138.4MB in the beginning and 654.3MB in the end (delta: 515.9MB). Free memory was 77.7MB in the beginning and 490.3MB in the end (delta: -412.6MB). Peak memory consumption was 365.3MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,498 INFO L158 Benchmark]: Witness Printer took 78.66ms. Allocated memory is still 654.3MB. Free memory was 490.3MB in the beginning and 485.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:18:26,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 40.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.53ms. Allocated memory is still 138.4MB. Free memory was 106.2MB in the beginning and 107.0MB in the end (delta: -833.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.59ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 105.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.47ms. Allocated memory is still 138.4MB. Free memory was 105.0MB in the beginning and 103.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 805.48ms. Allocated memory is still 138.4MB. Free memory was 102.9MB in the beginning and 78.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 63019.30ms. Allocated memory was 138.4MB in the beginning and 654.3MB in the end (delta: 515.9MB). Free memory was 77.7MB in the beginning and 490.3MB in the end (delta: -412.6MB). Peak memory consumption was 365.3MB. Max. memory is 16.1GB. * Witness Printer took 78.66ms. Allocated memory is still 654.3MB. Free memory was 490.3MB in the beginning and 485.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.9s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2437 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2417 mSDsluCounter, 1863 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1434 mSDsCounter, 1653 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4411 IncrementalHoareTripleChecker+Invalid, 6064 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1653 mSolverCounterUnsat, 429 mSDtfsCounter, 4411 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 855 GetRequests, 535 SyntacticMatches, 32 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10829 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=8, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 431 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 1613 PreInvPairs, 1794 NumberOfFragments, 1590 HoareAnnotationTreeSize, 1613 FomulaSimplifications, 5073 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 35 FomulaSimplificationsInter, 18059 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 594 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 3164 SizeOfPredicates, 42 NumberOfNonLiveVariables, 971 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 384/531 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: 338]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || ((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) - InvariantResult [Line: 508]: Loop Invariant Derived loop invariant: ((((((((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) && (((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && !(methaneLevelCritical == 0))) || (methaneLevelCritical == 0 && pumpRunning == 1)) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(tmp == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || 0 == systemActive)) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) && \old(waterLevel) == waterLevel + 1) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((\old(waterLevel) < 2 || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 535]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 556]: Loop Invariant Derived loop invariant: (((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) && !(0 == systemActive)) || ((((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && 1 <= waterLevel) && !(0 == systemActive)) - InvariantResult [Line: 280]: Loop Invariant Derived loop invariant: (((\old(waterLevel) < 2 || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 402]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) && tmp == 1)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 342]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1))) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || 0 == systemActive) && ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 346]: Loop Invariant Derived loop invariant: ((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && \old(waterLevel) == waterLevel + 1) && tmp == 1) || \old(waterLevel) < 2) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1) && !(0 == systemActive) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && waterLevel <= 1) && splverifierCounter == 0) && 1 <= waterLevel) && !(0 == systemActive)) || ((((2 <= waterLevel && splverifierCounter == 0) && waterLevel <= 2) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && !(0 == systemActive)) - InvariantResult [Line: 500]: Loop Invariant Derived loop invariant: ((((((((((((((\old(waterLevel) == waterLevel && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1))) && ((tmp == 0 && pumpRunning == 1) || (!(tmp == 0) && pumpRunning == 0))) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) && (methaneLevelCritical == 0 || !(aux-isMethaneLevelCritical()-aux == 0))) && (methaneLevelCritical == 0 || !(\result == 0))) || (((((!(tmp == 0) && pumpRunning == 0) && tmp___0 == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && (pumpRunning == \old(pumpRunning) || !(methaneLevelCritical == 1)))) || \old(waterLevel) < 2) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && \old(waterLevel) == waterLevel + 1) && tmp == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 0)) || tmp == 0) || 0 == systemActive)) && (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 <= \old(waterLevel))) || !(methaneLevelCritical == 1)) || (!(tmp == 0) && tmp___0 == 0)) || 0 == systemActive)) && (((((\old(waterLevel) == waterLevel + 1 || tmp___0 == 0) || \old(waterLevel) < 2) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && (((((\old(waterLevel) < 2 || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel + 1 && tmp == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) RESULT: Ultimate proved your program to be correct! [2022-11-19 07:18:26,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7111f5-000d-4da6-860f-0c0b9bba5de0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE