./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V --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 53b1b58c0a8af862b137647fd316df606e2053e614741221b62b3a107765e608 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:26:02,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:26:02,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:26:02,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:26:02,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:26:02,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:26:02,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:26:02,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:26:02,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:26:02,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:26:02,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:26:02,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:26:02,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:26:02,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:26:02,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:26:02,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:26:02,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:26:02,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:26:02,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:26:02,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:26:02,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:26:02,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:26:02,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:26:02,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:26:02,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:26:02,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:26:02,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:26:02,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:26:02,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:26:02,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:26:02,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:26:02,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:26:02,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:26:02,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:26:02,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:26:02,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:26:02,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:26:02,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:26:02,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:26:02,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:26:02,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:26:02,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:26:02,572 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:26:02,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:26:02,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:26:02,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:26:02,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:26:02,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:26:02,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:26:02,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:26:02,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:26:02,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:26:02,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:26:02,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:26:02,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:26:02,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:26:02,577 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:26:02,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:26:02,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:26:02,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:26:02,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:26:02,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:26:02,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:26:02,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:26:02,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:26:02,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:26:02,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:26:02,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:26:02,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:02,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:26:02,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:26:02,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:26:02,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:26:02,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:26:02,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:26:02,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:26:02,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:26:02,582 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b1b58c0a8af862b137647fd316df606e2053e614741221b62b3a107765e608 [2021-11-23 02:26:02,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:26:02,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:26:02,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:26:02,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:26:02,904 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:26:02,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-11-23 02:26:03,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/data/33c92a65e/00a5884e766442759eea031e012a7cd8/FLAGdf2da86df [2021-11-23 02:26:03,569 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:26:03,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-11-23 02:26:03,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/data/33c92a65e/00a5884e766442759eea031e012a7cd8/FLAGdf2da86df [2021-11-23 02:26:03,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/data/33c92a65e/00a5884e766442759eea031e012a7cd8 [2021-11-23 02:26:03,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:26:03,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:26:03,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:03,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:26:03,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:26:03,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:03" (1/1) ... [2021-11-23 02:26:03,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247b2bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:03, skipping insertion in model container [2021-11-23 02:26:03,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:03" (1/1) ... [2021-11-23 02:26:03,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:26:03,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:26:04,359 WARN L230 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_2a600441-5e27-40ee-a28f-6b7cd23b808d/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c[7381,7394] [2021-11-23 02:26:04,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:04,466 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:26:04,504 WARN L230 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_2a600441-5e27-40ee-a28f-6b7cd23b808d/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c[7381,7394] [2021-11-23 02:26:04,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:04,560 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:26:04,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04 WrapperNode [2021-11-23 02:26:04,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:04,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:04,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:26:04,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:26:04,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,625 INFO L137 Inliner]: procedures = 57, calls = 161, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 280 [2021-11-23 02:26:04,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:04,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:26:04,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:26:04,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:26:04,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:26:04,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:26:04,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:26:04,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:26:04,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (1/1) ... [2021-11-23 02:26:04,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:04,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:04,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:26:04,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:26:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 02:26:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 02:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:26:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:26:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:26:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:26:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 02:26:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 02:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-23 02:26:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-23 02:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 02:26:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 02:26:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:26:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:26:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:26:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:26:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:26:04,865 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:26:04,867 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:26:05,299 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:26:05,386 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:26:05,387 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:26:05,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:05 BoogieIcfgContainer [2021-11-23 02:26:05,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:26:05,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:26:05,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:26:05,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:26:05,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:03" (1/3) ... [2021-11-23 02:26:05,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03596d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:05, skipping insertion in model container [2021-11-23 02:26:05,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:04" (2/3) ... [2021-11-23 02:26:05,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03596d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:05, skipping insertion in model container [2021-11-23 02:26:05,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:05" (3/3) ... [2021-11-23 02:26:05,400 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2021-11-23 02:26:05,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:26:05,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:26:05,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:26:05,473 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:26:05,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:26:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:26:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:26:05,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:05,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:05,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1624241747, now seen corresponding path program 1 times [2021-11-23 02:26:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:05,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875354087] [2021-11-23 02:26:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:05,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:05,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:05,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875354087] [2021-11-23 02:26:05,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875354087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:05,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:05,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:26:05,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80575776] [2021-11-23 02:26:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:05,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:26:05,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:26:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:26:05,933 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-23 02:26:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:06,128 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2021-11-23 02:26:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:26:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2021-11-23 02:26:06,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:06,152 INFO L225 Difference]: With dead ends: 148 [2021-11-23 02:26:06,153 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 02:26:06,159 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:26:06,164 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:06,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 02:26:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-23 02:26:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-23 02:26:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-23 02:26:06,263 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 17 [2021-11-23 02:26:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:06,265 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-23 02:26:06,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-23 02:26:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-23 02:26:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:26:06,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:06,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:06,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:26:06,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 267909294, now seen corresponding path program 1 times [2021-11-23 02:26:06,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:06,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22320357] [2021-11-23 02:26:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:06,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:06,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22320357] [2021-11-23 02:26:06,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22320357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:06,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:06,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:06,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382074662] [2021-11-23 02:26:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:06,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:06,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:06,413 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 02:26:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:06,506 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2021-11-23 02:26:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2021-11-23 02:26:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:06,514 INFO L225 Difference]: With dead ends: 117 [2021-11-23 02:26:06,517 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 02:26:06,518 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:26:06,521 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:06,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 02:26:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 02:26:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:26:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2021-11-23 02:26:06,541 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2021-11-23 02:26:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:06,543 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2021-11-23 02:26:06,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 02:26:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2021-11-23 02:26:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:26:06,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:06,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:06,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:26:06,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1242194500, now seen corresponding path program 1 times [2021-11-23 02:26:06,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359595834] [2021-11-23 02:26:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:06,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:06,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359595834] [2021-11-23 02:26:06,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359595834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:06,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:06,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:06,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485482560] [2021-11-23 02:26:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:06,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:06,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:06,646 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:26:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:06,692 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2021-11-23 02:26:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-23 02:26:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:06,695 INFO L225 Difference]: With dead ends: 122 [2021-11-23 02:26:06,695 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 02:26:06,696 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:26:06,698 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:06,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 61 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:26:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 02:26:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 02:26:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 46 states have internal predecessors, (48), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:26:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2021-11-23 02:26:06,723 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 20 [2021-11-23 02:26:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2021-11-23 02:26:06,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:26:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2021-11-23 02:26:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 02:26:06,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:06,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:26:06,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 816133155, now seen corresponding path program 1 times [2021-11-23 02:26:06,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:06,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257120970] [2021-11-23 02:26:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:06,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:06,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:06,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257120970] [2021-11-23 02:26:06,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257120970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:06,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:06,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:26:06,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212056001] [2021-11-23 02:26:06,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:06,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:26:06,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:26:06,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:06,931 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:07,256 INFO L93 Difference]: Finished difference Result 195 states and 244 transitions. [2021-11-23 02:26:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:26:07,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2021-11-23 02:26:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:07,259 INFO L225 Difference]: With dead ends: 195 [2021-11-23 02:26:07,259 INFO L226 Difference]: Without dead ends: 135 [2021-11-23 02:26:07,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:26:07,263 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 134 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:07,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 183 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:26:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-23 02:26:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-11-23 02:26:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 91 states have internal predecessors, (103), 22 states have call successors, (22), 18 states have call predecessors, (22), 23 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2021-11-23 02:26:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2021-11-23 02:26:07,309 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 31 [2021-11-23 02:26:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2021-11-23 02:26:07,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:26:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2021-11-23 02:26:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 02:26:07,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:07,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:07,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:26:07,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 208436032, now seen corresponding path program 1 times [2021-11-23 02:26:07,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:07,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817238822] [2021-11-23 02:26:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:07,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:07,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:07,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817238822] [2021-11-23 02:26:07,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817238822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:07,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:07,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:26:07,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841221113] [2021-11-23 02:26:07,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:07,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:26:07,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:26:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:07,476 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:26:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:07,723 INFO L93 Difference]: Finished difference Result 430 states and 525 transitions. [2021-11-23 02:26:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:26:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2021-11-23 02:26:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:07,735 INFO L225 Difference]: With dead ends: 430 [2021-11-23 02:26:07,735 INFO L226 Difference]: Without dead ends: 303 [2021-11-23 02:26:07,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:26:07,745 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 113 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:07,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 306 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:26:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-23 02:26:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 286. [2021-11-23 02:26:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 199 states have internal predecessors, (220), 50 states have call successors, (50), 41 states have call predecessors, (50), 51 states have return successors, (67), 53 states have call predecessors, (67), 50 states have call successors, (67) [2021-11-23 02:26:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 337 transitions. [2021-11-23 02:26:07,801 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 337 transitions. Word has length 36 [2021-11-23 02:26:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:07,802 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 337 transitions. [2021-11-23 02:26:07,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:26:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 337 transitions. [2021-11-23 02:26:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 02:26:07,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:07,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:07,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:26:07,805 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2132735538, now seen corresponding path program 1 times [2021-11-23 02:26:07,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:07,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147529647] [2021-11-23 02:26:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:07,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:08,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:08,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147529647] [2021-11-23 02:26:08,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147529647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:08,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:08,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:26:08,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285952976] [2021-11-23 02:26:08,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:08,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:26:08,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:26:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:26:08,078 INFO L87 Difference]: Start difference. First operand 286 states and 337 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 02:26:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:08,958 INFO L93 Difference]: Finished difference Result 652 states and 800 transitions. [2021-11-23 02:26:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:26:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2021-11-23 02:26:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:08,967 INFO L225 Difference]: With dead ends: 652 [2021-11-23 02:26:08,967 INFO L226 Difference]: Without dead ends: 525 [2021-11-23 02:26:08,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:26:08,974 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 293 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:08,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 369 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:26:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-23 02:26:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 492. [2021-11-23 02:26:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 321 states have (on average 1.2211838006230529) internal successors, (392), 346 states have internal predecessors, (392), 88 states have call successors, (88), 67 states have call predecessors, (88), 82 states have return successors, (116), 91 states have call predecessors, (116), 88 states have call successors, (116) [2021-11-23 02:26:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 596 transitions. [2021-11-23 02:26:09,073 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 596 transitions. Word has length 39 [2021-11-23 02:26:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:09,074 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 596 transitions. [2021-11-23 02:26:09,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 02:26:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 596 transitions. [2021-11-23 02:26:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:26:09,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:09,081 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:09,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:26:09,081 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1727678004, now seen corresponding path program 1 times [2021-11-23 02:26:09,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412742244] [2021-11-23 02:26:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:09,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:26:09,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:09,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412742244] [2021-11-23 02:26:09,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412742244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:26:09,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804437752] [2021-11-23 02:26:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:09,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:09,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:09,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:26:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:09,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 02:26:09,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:10,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:26:11,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804437752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:26:11,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781283027] [2021-11-23 02:26:11,240 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-23 02:26:11,241 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:26:11,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:26:11,253 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:26:11,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:26:13,151 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2021-11-23 02:26:13,266 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 295 for LOIs [2021-11-23 02:26:18,604 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 292 for LOIs [2021-11-23 02:26:19,521 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 292 for LOIs [2021-11-23 02:26:20,440 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 293 for LOIs [2021-11-23 02:26:20,825 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 45 for LOIs [2021-11-23 02:26:20,833 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:27:09,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4644#(and (= (select (select |#memory_int| 14) 3) 84) (= (select (select |#memory_int| 6) 2) 102) (= (select (select |#memory_int| 11) 1) 0) (= 1 (select |#valid| 5)) (= 32 (select (select |#memory_int| 10) 1)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 9) 0) 79) (= (select |#valid| 15) 1) (= 112 (select (select |#memory_int| 7) 4)) (= (select (select |#memory_int| 6) 0) 79) (= 3 (select |#length| 10)) (= (select |#valid| 26) 1) (= (select (select |#memory_int| 7) 1) 80) (= 58 (select (select |#memory_int| 13) 5)) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select |#valid| 9) 1) (= (select |#length| 4) 13) (= 117 (select (select |#memory_int| 7) 2)) (= (select (select |#memory_int| 5) 2) 0) (= 7 (select |#length| 7)) (= 7 (select |#length| 13)) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~1#1|) (= 110 (select (select |#memory_int| 8) 1)) (= (select (select |#memory_int| 6) 1) 102) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= 58 (select (select |#memory_int| 7) 5)) (= (select (select |#memory_int| 8) 0) 79) (= 30 (select |#length| 23)) (= 41 (select (select |#memory_int| 16) 0)) (= 44 (select (select |#memory_int| 7) 0)) (= (select |#length| 24) 9) (= |timeShift_getWaterLevel_~retValue_acc~5#1| |timeShift_getWaterLevel_#res#1|) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 44 (select (select |#memory_int| 13) 0)) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (= (select (select |#memory_int| 11) 0) 10) (<= 1 ~systemActive~0) (= (select (select |#memory_int| 14) 4) 0) (= 2 (select |#length| 1)) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~3#1|) (= (select |#length| 17) 30) (= 73 (select (select |#memory_int| 14) 2)) (= 9 (select |#length| 18)) (= (select |#length| 19) 21) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select |#length| 22) 21) (= (select |#valid| 18) 1) (<= |#NULL.offset| 0) (= (select |#valid| 22) 1) (= 3 (select |#length| 5)) (= 30 (select |#length| 26)) (= 77 (select (select |#memory_int| 13) 1)) (= 2 (select |#length| 11)) (= (select |#length| 15) 3) (= |old(~pumpRunning~0)| 0) (= (select |#valid| 24) 1) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~5#1| ~waterLevel~0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~3#1|) (= (select (select |#memory_int| 9) 3) 0) (= (select |#valid| 12) 1) (= (select |#valid| 28) 1) (<= ~methaneLevelCritical~0 0) (= (select (select |#memory_int| 14) 1) 82) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 9) 1) 102) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 16) 1) 0) (= 101 (select (select |#memory_int| 13) 2)) (<= 0 ~head~0.base) (= 25 (select |#length| 25)) (= (select |#valid| 1) 1) (= (select (select |#memory_int| 7) 6) 0) (= (select (select |#memory_int| 9) 2) 102) (= (select |#valid| 20) 1) (= (select (select |#memory_int| 5) 0) 79) (= (select |#length| 12) 13) (= 2 (select |#length| 16)) (= (select |#valid| 21) 1) (= (select |#length| 9) 4) (= 104 (select (select |#memory_int| 13) 4)) (<= 0 ~methaneLevelCritical~0) (= (select |#length| 21) 9) (= (select |#valid| 14) 1) (= |old(~waterLevel~0)| ~waterLevel~0) (= 116 (select (select |#memory_int| 13) 3)) (= 5 (select |#length| 14)) (= (select |#valid| 0) 0) (= 30 (select |#length| 20)) (= (select |#valid| 25) 1) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~1#1|) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 0) 67) (= (select (select |#memory_int| 10) 2) 0) (= (select |#length| 27) 9) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= (select |#valid| 19) 1) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~8#1|) (= (select (select |#memory_int| 15) 1) 75) (= 109 (select (select |#memory_int| 7) 3)) (<= 0 |#NULL.offset|) (= (select (select |#memory_int| 6) 3) 0) (= 0 (select (select |#memory_int| 13) 6)) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 0) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 15) 0) 79) (= (select (select |#memory_int| 10) 0) 41) (= (select |#valid| 17) 1) (= (select |#valid| 10) 1) (= (select (select |#memory_int| 5) 1) 110) (= (select |#valid| 8) 1) (= (select |#length| 28) 25) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:27:09,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:27:09,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:27:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 26 [2021-11-23 02:27:09,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360548732] [2021-11-23 02:27:09,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:27:09,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:27:09,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:09,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:27:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2525, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:27:09,186 INFO L87 Difference]: Start difference. First operand 492 states and 596 transitions. Second operand has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 7 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 14 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-23 02:27:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:13,342 INFO L93 Difference]: Finished difference Result 2222 states and 2774 transitions. [2021-11-23 02:27:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-23 02:27:13,342 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 7 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 14 states have call predecessors, (18), 7 states have call successors, (18) Word has length 44 [2021-11-23 02:27:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:13,357 INFO L225 Difference]: With dead ends: 2222 [2021-11-23 02:27:13,357 INFO L226 Difference]: Without dead ends: 1858 [2021-11-23 02:27:13,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 90 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4688 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=1148, Invalid=11284, Unknown=0, NotChecked=0, Total=12432 [2021-11-23 02:27:13,373 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 962 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:13,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1822 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:27:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-11-23 02:27:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1633. [2021-11-23 02:27:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1089 states have (on average 1.199265381083563) internal successors, (1306), 1141 states have internal predecessors, (1306), 282 states have call successors, (282), 223 states have call predecessors, (282), 261 states have return successors, (384), 294 states have call predecessors, (384), 282 states have call successors, (384) [2021-11-23 02:27:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 1972 transitions. [2021-11-23 02:27:13,564 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 1972 transitions. Word has length 44 [2021-11-23 02:27:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:13,565 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 1972 transitions. [2021-11-23 02:27:13,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 7 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 14 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-23 02:27:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 1972 transitions. [2021-11-23 02:27:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 02:27:13,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:13,569 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:13,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:27:13,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:27:13,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:27:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 385498576, now seen corresponding path program 1 times [2021-11-23 02:27:13,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:13,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993932671] [2021-11-23 02:27:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:13,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:27:13,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:13,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993932671] [2021-11-23 02:27:13,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993932671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:13,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:13,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 02:27:13,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762491434] [2021-11-23 02:27:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:27:13,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:27:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:27:13,945 INFO L87 Difference]: Start difference. First operand 1633 states and 1972 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:27:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:14,956 INFO L93 Difference]: Finished difference Result 2994 states and 3774 transitions. [2021-11-23 02:27:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 02:27:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-11-23 02:27:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:14,974 INFO L225 Difference]: With dead ends: 2994 [2021-11-23 02:27:14,974 INFO L226 Difference]: Without dead ends: 2065 [2021-11-23 02:27:14,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 02:27:14,980 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 258 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:14,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 759 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:27:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-23 02:27:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1770. [2021-11-23 02:27:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1176 states have (on average 1.183673469387755) internal successors, (1392), 1243 states have internal predecessors, (1392), 304 states have call successors, (304), 243 states have call predecessors, (304), 289 states have return successors, (441), 310 states have call predecessors, (441), 304 states have call successors, (441) [2021-11-23 02:27:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2137 transitions. [2021-11-23 02:27:15,239 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2137 transitions. Word has length 47 [2021-11-23 02:27:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:15,241 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2137 transitions. [2021-11-23 02:27:15,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:27:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2137 transitions. [2021-11-23 02:27:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 02:27:15,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:15,251 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:27:15,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:27:15,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:27:15,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1804366665, now seen corresponding path program 1 times [2021-11-23 02:27:15,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:15,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139765252] [2021-11-23 02:27:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:15,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:27:15,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:15,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139765252] [2021-11-23 02:27:15,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139765252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:27:15,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120350864] [2021-11-23 02:27:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:15,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:27:15,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:27:15,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:27:15,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:27:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:15,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 02:27:15,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:27:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 02:27:16,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:27:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:27:16,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120350864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:27:16,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1185207292] [2021-11-23 02:27:16,534 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2021-11-23 02:27:16,534 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:27:16,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:27:16,535 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:27:16,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:27:22,772 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2021-11-23 02:27:22,834 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 299 for LOIs [2021-11-23 02:27:24,200 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 299 for LOIs [2021-11-23 02:27:25,297 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 299 for LOIs [2021-11-23 02:27:26,849 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 299 for LOIs [2021-11-23 02:27:27,274 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 316 for LOIs [2021-11-23 02:27:27,343 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:28:08,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18293#(and (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~1#1|) (= ~methaneLevelCritical~0 0) (= |timeShift_getWaterLevel_~retValue_acc~5#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift_getWaterLevel_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___0~3#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~5#1| ~waterLevel~0) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~3#1|) (<= 2 |old(~waterLevel~0)|) (= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification3_spec__1_~tmp___1~1#1|) (= |#NULL.offset| 0) (= ~methaneLevelCritical~0 |timeShift___utac_acc__Specification3_spec__1_~tmp~8#1|) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:28:08,211 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:28:08,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:28:08,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 20 [2021-11-23 02:28:08,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901794947] [2021-11-23 02:28:08,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:28:08,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:28:08,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:28:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 02:28:08,214 INFO L87 Difference]: Start difference. First operand 1770 states and 2137 transitions. Second operand has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2021-11-23 02:28:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:11,444 INFO L93 Difference]: Finished difference Result 4615 states and 5878 transitions. [2021-11-23 02:28:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-23 02:28:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 75 [2021-11-23 02:28:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:11,485 INFO L225 Difference]: With dead ends: 4615 [2021-11-23 02:28:11,485 INFO L226 Difference]: Without dead ends: 3777 [2021-11-23 02:28:11,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 191 SyntacticMatches, 14 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3172 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=933, Invalid=6377, Unknown=0, NotChecked=0, Total=7310 [2021-11-23 02:28:11,499 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 911 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:11,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 588 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:28:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2021-11-23 02:28:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3414. [2021-11-23 02:28:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 2248 states have (on average 1.1632562277580072) internal successors, (2615), 2369 states have internal predecessors, (2615), 587 states have call successors, (587), 486 states have call predecessors, (587), 578 states have return successors, (880), 598 states have call predecessors, (880), 587 states have call successors, (880) [2021-11-23 02:28:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 4082 transitions. [2021-11-23 02:28:11,874 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 4082 transitions. Word has length 75 [2021-11-23 02:28:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:11,875 INFO L470 AbstractCegarLoop]: Abstraction has 3414 states and 4082 transitions. [2021-11-23 02:28:11,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2021-11-23 02:28:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 4082 transitions. [2021-11-23 02:28:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:28:11,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:11,882 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:28:11,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:28:12,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:12,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1504846347, now seen corresponding path program 1 times [2021-11-23 02:28:12,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:12,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397706308] [2021-11-23 02:28:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:28:12,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397706308] [2021-11-23 02:28:12,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397706308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:28:12,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819143161] [2021-11-23 02:28:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:12,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:28:12,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:28:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:28:12,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 02:28:12,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:28:12,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819143161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:12,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:28:12,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 24 [2021-11-23 02:28:12,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901774216] [2021-11-23 02:28:12,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:12,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:28:12,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:28:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:28:12,898 INFO L87 Difference]: Start difference. First operand 3414 states and 4082 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:13,315 INFO L93 Difference]: Finished difference Result 5894 states and 7133 transitions. [2021-11-23 02:28:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:28:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-11-23 02:28:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:13,324 INFO L225 Difference]: With dead ends: 5894 [2021-11-23 02:28:13,324 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:28:13,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:28:13,342 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 66 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:13,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 240 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:28:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:28:13,345 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) [2021-11-23 02:28:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:28:13,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-11-23 02:28:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:13,347 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:28:13,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:28:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:28:13,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:28:13,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:28:13,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:28:13,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:13,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:28:33,039 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 800 DAG size of output: 65 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 02:28:40,166 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 266 273) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (= |old(~pumpRunning~0)| 0) (not (<= ~waterLevel~0 1))) [2021-11-23 02:28:40,166 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 266 273) no Hoare annotation was computed. [2021-11-23 02:28:40,166 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 156 162) no Hoare annotation was computed. [2021-11-23 02:28:40,167 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 156 162) the Hoare annotation is: true [2021-11-23 02:28:40,167 INFO L854 garLoopResultBuilder]: At program point L209(line 209) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (<= ~waterLevel~0 2))) (or .cse1 .cse0 (not (<= ~waterLevel~0 1))))) [2021-11-23 02:28:40,167 INFO L858 garLoopResultBuilder]: For program point L209-1(lines 190 214) no Hoare annotation was computed. [2021-11-23 02:28:40,167 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 190 214) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,167 INFO L854 garLoopResultBuilder]: At program point L204(line 204) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,168 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 190 214) no Hoare annotation was computed. [2021-11-23 02:28:40,168 INFO L854 garLoopResultBuilder]: At program point L200(line 200) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,168 INFO L858 garLoopResultBuilder]: For program point L198(lines 198 206) no Hoare annotation was computed. [2021-11-23 02:28:40,168 INFO L854 garLoopResultBuilder]: At program point L194(lines 194 211) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,169 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 396 407) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 1)) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= ~waterLevel~0 2))) (.cse3 (not (<= |old(~methaneLevelCritical~0)| 0))) (.cse4 (and (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0))) (.cse5 (not (<= 0 |old(~methaneLevelCritical~0)|)))) (and (or .cse0 (not (<= 2 ~waterLevel~0)) (not .cse1) .cse2 .cse3 .cse4 .cse5) (or (<= 1 ~methaneLevelCritical~0) .cse0 (and (not (<= (+ |old(~methaneLevelCritical~0)| 1) 0)) (not (<= 1 |old(~methaneLevelCritical~0)|))) (<= (+ ~methaneLevelCritical~0 1) 0) .cse2 .cse1) (or (not (= ~pumpRunning~0 0)) .cse0 .cse2 .cse3 .cse4 .cse5))) [2021-11-23 02:28:40,169 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 396 407) no Hoare annotation was computed. [2021-11-23 02:28:40,169 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 408 416) the Hoare annotation is: true [2021-11-23 02:28:40,169 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 408 416) no Hoare annotation was computed. [2021-11-23 02:28:40,169 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 483 512) no Hoare annotation was computed. [2021-11-23 02:28:40,169 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 483 512) the Hoare annotation is: true [2021-11-23 02:28:40,170 INFO L861 garLoopResultBuilder]: At program point L508(lines 483 512) the Hoare annotation is: true [2021-11-23 02:28:40,170 INFO L858 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-11-23 02:28:40,170 INFO L858 garLoopResultBuilder]: For program point L497(lines 497 501) no Hoare annotation was computed. [2021-11-23 02:28:40,170 INFO L861 garLoopResultBuilder]: At program point L497-1(lines 497 501) the Hoare annotation is: true [2021-11-23 02:28:40,170 INFO L861 garLoopResultBuilder]: At program point L493-2(lines 493 507) the Hoare annotation is: true [2021-11-23 02:28:40,171 INFO L861 garLoopResultBuilder]: At program point L489(line 489) the Hoare annotation is: true [2021-11-23 02:28:40,171 INFO L858 garLoopResultBuilder]: For program point L489-1(line 489) no Hoare annotation was computed. [2021-11-23 02:28:40,171 INFO L854 garLoopResultBuilder]: At program point L477(line 477) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= |old(~waterLevel~0)| 2))) [2021-11-23 02:28:40,171 INFO L858 garLoopResultBuilder]: For program point L143-1(lines 143 149) no Hoare annotation was computed. [2021-11-23 02:28:40,171 INFO L854 garLoopResultBuilder]: At program point L230(line 230) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0)))) (not (<= |old(~waterLevel~0)| 2))) [2021-11-23 02:28:40,172 INFO L854 garLoopResultBuilder]: At program point L226(line 226) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not (= ~pumpRunning~0 0)))) (and (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 .cse2 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0))))) (or .cse0 (and .cse1 .cse2 (= ~waterLevel~0 1)) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))))) [2021-11-23 02:28:40,172 INFO L854 garLoopResultBuilder]: At program point L222(line 222) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0)))) (not (<= |old(~waterLevel~0)| 2))) [2021-11-23 02:28:40,172 INFO L858 garLoopResultBuilder]: For program point L222-1(line 222) no Hoare annotation was computed. [2021-11-23 02:28:40,172 INFO L854 garLoopResultBuilder]: At program point L590(lines 590 610) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0))) (let ((.cse12 (= |old(~pumpRunning~0)| 0)) (.cse4 (not .cse1)) (.cse2 (<= ~waterLevel~0 1)) (.cse13 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse7 (<= (+ ~methaneLevelCritical~0 1) 0)) (.cse6 (<= 1 ~methaneLevelCritical~0)) (.cse5 (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~8#1| 0))) (.cse10 (not (<= |old(~waterLevel~0)| 2))) (.cse11 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse4 .cse2 .cse13 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse3)))) (.cse8 (not .cse13)) (.cse9 (and (not .cse12) .cse1 .cse2 .cse13))) (and (or .cse0 (and .cse1 .cse2 .cse3) (and (or .cse4 .cse5) .cse3 (or .cse6 .cse7 (= ~pumpRunning~0 1))) .cse8 .cse9 .cse10) (or .cse11 (and (not .cse7) (not .cse6)) .cse4 .cse8 .cse9 .cse5) (or .cse8 .cse12 (= ~waterLevel~0 1) .cse10 (not (<= 2 |old(~waterLevel~0)|))) (or .cse11 .cse0 .cse8 .cse9 .cse12))))) [2021-11-23 02:28:40,173 INFO L854 garLoopResultBuilder]: At program point L235(line 235) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2))) [2021-11-23 02:28:40,173 INFO L854 garLoopResultBuilder]: At program point L235-1(lines 216 240) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse7 (not .cse10)) (.cse11 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~pumpRunning~0 0)) (.cse12 (= ~waterLevel~0 1)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (and .cse9 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1)))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and .cse11 (not .cse8) .cse12)) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (and .cse7 .cse8 .cse12)) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse6 .cse7 (and .cse8 .cse9) .cse0 .cse2) (or .cse6 .cse0 .cse10 (and .cse11 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse9))) (and .cse8 (<= ~waterLevel~0 1))) (or .cse0 .cse1 .cse10 .cse3 .cse4 .cse5))))) [2021-11-23 02:28:40,173 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 135 154) no Hoare annotation was computed. [2021-11-23 02:28:40,173 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 232) no Hoare annotation was computed. [2021-11-23 02:28:40,174 INFO L858 garLoopResultBuilder]: For program point L220(lines 220 237) no Hoare annotation was computed. [2021-11-23 02:28:40,174 INFO L858 garLoopResultBuilder]: For program point L600(lines 600 606) no Hoare annotation was computed. [2021-11-23 02:28:40,174 INFO L854 garLoopResultBuilder]: At program point L596(lines 596 609) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (not .cse7)) (.cse2 (<= |timeShift___utac_acc__Specification3_spec__1_~tmp___0~3#1| 1)) (.cse10 (<= 1 ~methaneLevelCritical~0)) (.cse9 (<= (+ ~methaneLevelCritical~0 1) 0)) (.cse5 (= ~pumpRunning~0 0))) (let ((.cse3 (not (<= |old(~waterLevel~0)| 1))) (.cse11 (not .cse5)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (or .cse10 .cse9 (= ~pumpRunning~0 1))) (.cse6 (not (= 1 ~systemActive~0))) (.cse8 (not (<= |old(~waterLevel~0)| 2))) (.cse12 (and .cse4 .cse2 (= ~waterLevel~0 1))) (.cse13 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (and .cse0 .cse1 .cse2) .cse3 .cse4 (and .cse5 .cse0 .cse2) .cse6) (or .cse3 .cse6 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse0)) .cse2) (and .cse5 (<= ~waterLevel~0 1) .cse2) .cse7) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse6 .cse7 .cse8) (or .cse3 .cse4 (and (not .cse9) (not .cse10)) .cse11 .cse6) (or .cse6 .cse7 .cse8 .cse12 .cse13) (or (and .cse11 .cse0 .cse1) .cse6 .cse8 .cse12 .cse13))))) [2021-11-23 02:28:40,174 INFO L854 garLoopResultBuilder]: At program point L596-1(lines 581 613) the Hoare annotation is: (let ((.cse9 (= |old(~pumpRunning~0)| 0))) (let ((.cse13 (not .cse9)) (.cse16 (= 1 ~systemActive~0)) (.cse10 (= ~pumpRunning~0 0))) (let ((.cse3 (not .cse10)) (.cse6 (not (= |timeShift___utac_acc__Specification3_spec__1_~tmp~8#1| 0))) (.cse11 (not (<= |old(~waterLevel~0)| 2))) (.cse12 (not (<= 2 |old(~waterLevel~0)|))) (.cse2 (<= 1 ~methaneLevelCritical~0)) (.cse1 (<= (+ ~methaneLevelCritical~0 1) 0)) (.cse14 (= ~pumpRunning~0 1)) (.cse0 (not (<= |old(~waterLevel~0)| 1))) (.cse4 (not .cse16)) (.cse5 (and .cse13 .cse10 (<= ~waterLevel~0 1) .cse16)) (.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse15 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (and (not .cse1) (not .cse2)) .cse3 .cse4 .cse5 .cse6) (let ((.cse8 (= ~waterLevel~0 1))) (or (and .cse7 .cse8) .cse4 .cse9 (and .cse10 .cse8) .cse11 .cse12)) (or .cse13 .cse4 (not (<= ~methaneLevelCritical~0 0)) (not (<= 0 ~methaneLevelCritical~0)) .cse11 .cse14 .cse12) (or .cse13 .cse4 (and (or .cse3 .cse6) .cse15) .cse11 .cse12) (or .cse0 .cse13 (and .cse10 .cse15) .cse4 (and .cse15 (or .cse2 .cse1 .cse14))) (or .cse0 .cse4 .cse5 .cse9 (and .cse7 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse15)))))))) [2021-11-23 02:28:40,175 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 132 155) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= |old(~waterLevel~0)| 2))) [2021-11-23 02:28:40,175 INFO L854 garLoopResultBuilder]: At program point L588(line 588) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse7 (not .cse10)) (.cse11 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~pumpRunning~0 0)) (.cse12 (= ~waterLevel~0 1)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (and .cse9 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1)))) (.cse6 (not (<= |old(~waterLevel~0)| 1))) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (and .cse11 (not .cse8) .cse12)) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (and .cse7 .cse8 .cse12)) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse6 .cse7 (and .cse8 .cse9) .cse0 .cse2) (or .cse6 .cse0 .cse10 (and .cse11 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (< 0 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse9))) (and .cse8 (<= ~waterLevel~0 1))) (or .cse0 .cse1 .cse10 .cse3 .cse4 .cse5))))) [2021-11-23 02:28:40,175 INFO L858 garLoopResultBuilder]: For program point L588-1(line 588) no Hoare annotation was computed. [2021-11-23 02:28:40,175 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 132 155) no Hoare annotation was computed. [2021-11-23 02:28:40,176 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 477) no Hoare annotation was computed. [2021-11-23 02:28:40,176 INFO L854 garLoopResultBuilder]: At program point L110(lines 63 111) the Hoare annotation is: false [2021-11-23 02:28:40,176 INFO L858 garLoopResultBuilder]: For program point L65(lines 64 109) no Hoare annotation was computed. [2021-11-23 02:28:40,176 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 02:28:40,176 INFO L854 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (and (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2021-11-23 02:28:40,177 INFO L854 garLoopResultBuilder]: At program point L107(lines 64 109) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= ~waterLevel~0 1) .cse0 .cse1) (and .cse0 .cse1 (<= ~waterLevel~0 2) (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))))) [2021-11-23 02:28:40,177 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 80) no Hoare annotation was computed. [2021-11-23 02:28:40,177 INFO L858 garLoopResultBuilder]: For program point L74-1(lines 74 80) no Hoare annotation was computed. [2021-11-23 02:28:40,177 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:28:40,177 INFO L854 garLoopResultBuilder]: At program point L100-2(lines 94 105) the Hoare annotation is: (and (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2)) [2021-11-23 02:28:40,178 INFO L854 garLoopResultBuilder]: At program point L567(lines 567 574) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2021-11-23 02:28:40,178 INFO L861 garLoopResultBuilder]: At program point L567-2(lines 567 574) the Hoare annotation is: true [2021-11-23 02:28:40,178 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2021-11-23 02:28:40,178 INFO L858 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2021-11-23 02:28:40,178 INFO L861 garLoopResultBuilder]: At program point L113(lines 54 117) the Hoare annotation is: true [2021-11-23 02:28:40,179 INFO L854 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and (<= ~waterLevel~0 1) .cse0 .cse1) (and .cse0 .cse1 .cse2 (or (<= 1 ~methaneLevelCritical~0) (<= (+ ~methaneLevelCritical~0 1) 0) (= ~pumpRunning~0 1))) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2))) [2021-11-23 02:28:40,179 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 164 188) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,179 INFO L854 garLoopResultBuilder]: At program point L254(line 254) the Hoare annotation is: (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (<= ~waterLevel~0 1))) (and (or (and (or .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (= ~pumpRunning~0 0) (<= 0 |processEnvironment__wrappee__highWaterSensor_~tmp~1#1|)) (not .cse1) .cse2 (not (<= ~waterLevel~0 2))) (or .cse2 .cse1 (not .cse0)))) [2021-11-23 02:28:40,180 INFO L854 garLoopResultBuilder]: At program point L254-1(line 254) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (<= ~waterLevel~0 1))) (and (or (not .cse0) .cse1 (not (<= ~waterLevel~0 2)) (and (or .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (= ~pumpRunning~0 0) (<= 0 |processEnvironment__wrappee__highWaterSensor_~tmp~1#1|) (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret11#1|))) (or .cse1 .cse0 (not .cse2)))) [2021-11-23 02:28:40,180 INFO L854 garLoopResultBuilder]: At program point L178(line 178) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (<= ~waterLevel~0 1))) (and (or (not .cse0) .cse1 (not (<= ~waterLevel~0 2)) (and (= ~pumpRunning~0 0) .cse2 (<= 0 |processEnvironment__wrappee__highWaterSensor_~tmp~1#1|))) (or .cse1 .cse0 (not .cse2)))) [2021-11-23 02:28:40,180 INFO L858 garLoopResultBuilder]: For program point L172(lines 172 180) no Hoare annotation was computed. [2021-11-23 02:28:40,180 INFO L854 garLoopResultBuilder]: At program point L168(lines 168 185) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,180 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 164 188) no Hoare annotation was computed. [2021-11-23 02:28:40,181 INFO L854 garLoopResultBuilder]: At program point L183(line 183) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= ~waterLevel~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (<= ~waterLevel~0 2))))) [2021-11-23 02:28:40,181 INFO L858 garLoopResultBuilder]: For program point L183-1(lines 164 188) no Hoare annotation was computed. [2021-11-23 02:28:40,181 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 384 395) no Hoare annotation was computed. [2021-11-23 02:28:40,181 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 384 395) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 (and (not (<= (+ ~methaneLevelCritical~0 1) 0)) (not (<= 1 ~methaneLevelCritical~0)) (not (= ~pumpRunning~0 1))) .cse1 .cse2) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 .cse1) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2021-11-23 02:28:40,182 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 274 284) the Hoare annotation is: true [2021-11-23 02:28:40,182 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 274 284) no Hoare annotation was computed. [2021-11-23 02:28:40,182 INFO L861 garLoopResultBuilder]: At program point L279(line 279) the Hoare annotation is: true [2021-11-23 02:28:40,182 INFO L858 garLoopResultBuilder]: For program point L279-1(line 279) no Hoare annotation was computed. [2021-11-23 02:28:40,186 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:40,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:28:40,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:28:40 BoogieIcfgContainer [2021-11-23 02:28:40,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:28:40,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:28:40,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:28:40,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:28:40,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:05" (3/4) ... [2021-11-23 02:28:40,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:28:40,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 02:28:40,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 02:28:40,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 02:28:40,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 02:28:40,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 02:28:40,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 02:28:40,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 02:28:40,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 02:28:40,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-11-23 02:28:40,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-11-23 02:28:40,251 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2021-11-23 02:28:40,252 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-23 02:28:40,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-23 02:28:40,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 02:28:40,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 02:28:40,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:28:40,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:28:40,285 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2) [2021-11-23 02:28:40,286 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)))) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || (pumpRunning == 0 && waterLevel <= 1))) && (((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1)) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1)) || !(2 <= \old(waterLevel))) [2021-11-23 02:28:40,286 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel <= 1)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) [2021-11-23 02:28:40,287 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel <= 1)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) [2021-11-23 02:28:40,287 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel <= 1) && 1 == systemActive) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) || ((pumpRunning == 0 && waterLevel <= 1) && \old(waterLevel) == waterLevel)) || (((!(pumpRunning == 0) || !(tmp == 0)) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(tmp == 0))) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel <= 1) && 1 == systemActive) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || \old(pumpRunning) == 0) [2021-11-23 02:28:40,288 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(waterLevel) <= 1) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && waterLevel == 1) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((!(pumpRunning == 0) || !(tmp == 0)) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)))) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) [2021-11-23 02:28:40,289 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) || ((((waterLevel <= 1 || tmp == 1) && pumpRunning == 0) && 0 <= tmp) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(waterLevel <= 1)) [2021-11-23 02:28:40,289 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) && tmp___0 <= 1) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp___0 <= 1)) || !(1 == systemActive)) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || (((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)) && tmp___0 <= 1)) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0)) && ((((pumpRunning == \old(pumpRunning) || pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive))) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && tmp___0 <= 1) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && tmp___0 <= 1) && waterLevel == 1)) || !(2 <= \old(waterLevel))) [2021-11-23 02:28:40,290 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(1 == systemActive) || !(\old(waterLevel) <= 2) [2021-11-23 02:28:40,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:28:40,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:28:40,329 INFO L158 Benchmark]: Toolchain (without parser) took 156424.66ms. Allocated memory was 102.8MB in the beginning and 710.9MB in the end (delta: 608.2MB). Free memory was 66.5MB in the beginning and 567.7MB in the end (delta: -501.2MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,329 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:28:40,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.32ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 66.3MB in the beginning and 97.5MB in the end (delta: -31.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.68ms. Allocated memory is still 132.1MB. Free memory was 97.5MB in the beginning and 94.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,330 INFO L158 Benchmark]: Boogie Preprocessor took 36.88ms. Allocated memory is still 132.1MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,331 INFO L158 Benchmark]: RCFGBuilder took 725.39ms. Allocated memory is still 132.1MB. Free memory was 92.7MB in the beginning and 69.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,331 INFO L158 Benchmark]: TraceAbstraction took 154834.38ms. Allocated memory was 132.1MB in the beginning and 710.9MB in the end (delta: 578.8MB). Free memory was 68.4MB in the beginning and 575.1MB in the end (delta: -506.7MB). Peak memory consumption was 420.0MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,332 INFO L158 Benchmark]: Witness Printer took 101.27ms. Allocated memory is still 710.9MB. Free memory was 575.1MB in the beginning and 567.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:28:40,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.32ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 66.3MB in the beginning and 97.5MB in the end (delta: -31.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.68ms. Allocated memory is still 132.1MB. Free memory was 97.5MB in the beginning and 94.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.88ms. Allocated memory is still 132.1MB. Free memory was 94.8MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 725.39ms. Allocated memory is still 132.1MB. Free memory was 92.7MB in the beginning and 69.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 154834.38ms. Allocated memory was 132.1MB in the beginning and 710.9MB in the end (delta: 578.8MB). Free memory was 68.4MB in the beginning and 575.1MB in the end (delta: -506.7MB). Peak memory consumption was 420.0MB. Max. memory is 16.1GB. * Witness Printer took 101.27ms. Allocated memory is still 710.9MB. Free memory was 575.1MB in the beginning and 567.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. 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: 477]: 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 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 154.7s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 26.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2863 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2812 mSDsluCounter, 4522 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4135 mSDsCounter, 1642 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5834 IncrementalHoareTripleChecker+Invalid, 7476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1642 mSolverCounterUnsat, 1010 mSDtfsCounter, 5834 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 701 GetRequests, 397 SyntacticMatches, 24 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8339 ImplicationChecksByTransitivity, 94.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3414occurred in iteration=9, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 939 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 5297 PreInvPairs, 6783 NumberOfFragments, 1761 HoareAnnotationTreeSize, 5297 FomulaSimplifications, 68772 FormulaSimplificationTreeSizeReduction, 5.5s HoareSimplificationTime, 43 FomulaSimplificationsInter, 254913 FormulaSimplificationTreeSizeReductionInter, 20.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 716 ConstructedInterpolants, 0 QuantifiedInterpolants, 2987 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 115/171 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: 254]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) || ((((waterLevel <= 1 || tmp == 1) && pumpRunning == 0) && 0 <= tmp) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(waterLevel <= 1)) - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 483]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 216]: Loop Invariant Derived loop invariant: (((((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1)) || !(2 <= \old(waterLevel))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)))) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || (pumpRunning == 0 && waterLevel <= 1))) && (((((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel == 1)) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 493]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel <= 1)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2) - InvariantResult [Line: 477]: Loop Invariant Derived loop invariant: !(1 == systemActive) || !(\old(waterLevel) <= 2) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((waterLevel <= 1 && 1 == systemActive) && splverifierCounter == 0) || (((1 == systemActive && splverifierCounter == 0) && waterLevel <= 2) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) - InvariantResult [Line: 596]: Loop Invariant Derived loop invariant: ((((((((((\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) && tmp___0 <= 1) || !(\old(waterLevel) <= 1)) || !(\old(pumpRunning) == 0)) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel) && tmp___0 <= 1)) || !(1 == systemActive)) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || (((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)) && tmp___0 <= 1)) || ((pumpRunning == 0 && waterLevel <= 1) && tmp___0 <= 1)) || \old(pumpRunning) == 0)) && ((((pumpRunning == \old(pumpRunning) || pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive))) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && tmp___0 <= 1) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((((!(pumpRunning == 0) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)) || !(1 == systemActive)) || !(\old(waterLevel) <= 2)) || ((!(\old(pumpRunning) == 0) && tmp___0 <= 1) && waterLevel == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 590]: Loop Invariant Derived loop invariant: (((((((((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel <= 1) && 1 == systemActive) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel))) || ((pumpRunning == 0 && waterLevel <= 1) && \old(waterLevel) == waterLevel)) || (((!(pumpRunning == 0) || !(tmp == 0)) && \old(waterLevel) == waterLevel) && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1))) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(\old(waterLevel) <= 2)) && (((((!(\old(waterLevel) <= 1) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(tmp == 0))) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || waterLevel == 1) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || ((((pumpRunning == \old(pumpRunning) && !(pumpRunning == 0)) && waterLevel <= 1) && 1 == systemActive) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || \old(pumpRunning) == 0) - InvariantResult [Line: 581]: Loop Invariant Derived loop invariant: (((((((((!(\old(waterLevel) <= 1) || (!(methaneLevelCritical + 1 <= 0) && !(1 <= methaneLevelCritical))) || !(pumpRunning == 0)) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || !(tmp == 0)) && ((((((pumpRunning == \old(pumpRunning) && waterLevel == 1) || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || !(\old(waterLevel) <= 2)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((!(pumpRunning == 0) || !(tmp == 0)) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (\old(waterLevel) == waterLevel && ((1 <= methaneLevelCritical || methaneLevelCritical + 1 <= 0) || pumpRunning == 1)))) && ((((!(\old(waterLevel) <= 1) || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && ((\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)) || (\old(waterLevel) <= 0 && \old(waterLevel) == waterLevel)))) - InvariantResult [Line: 168]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(waterLevel <= 1)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(waterLevel <= 2)) - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:28:40,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a600441-5e27-40ee-a28f-6b7cd23b808d/bin/utaipan-EQgc7hIp5V/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