./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63a498e40ee7fb7960293994084186ed238562f61fafb5e109bd8b394667fc1f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:35:14,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:35:14,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:35:14,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:35:14,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:35:14,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:35:14,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:35:14,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:35:14,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:35:14,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:35:14,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:35:14,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:35:14,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:35:14,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:35:14,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:35:14,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:35:14,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:35:14,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:35:14,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:35:14,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:35:14,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:35:14,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:35:14,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:35:14,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:35:14,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:35:14,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:35:14,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:35:14,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:35:14,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:35:14,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:35:14,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:35:14,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:35:14,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:35:14,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:35:14,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:35:14,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:35:14,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:35:14,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:35:14,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:35:14,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:35:14,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:35:14,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:35:14,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:35:14,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:35:14,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:35:14,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:35:14,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:35:14,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:35:14,349 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:35:14,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:35:14,350 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:35:14,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:35:14,351 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:35:14,351 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:35:14,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:35:14,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:35:14,353 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:35:14,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:35:14,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:35:14,354 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:35:14,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:35:14,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:35:14,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:35:14,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:35:14,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:35:14,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:35:14,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:35:14,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:35:14,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:35:14,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:35:14,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:35:14,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:35:14,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:35:14,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:35:14,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:35:14,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:35:14,360 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:35:14,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:35:14,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:35:14,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:35:14,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:35:14,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:35:14,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:35:14,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63a498e40ee7fb7960293994084186ed238562f61fafb5e109bd8b394667fc1f [2022-11-19 08:35:14,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:35:14,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:35:14,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:35:14,683 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:35:14,684 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:35:14,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c [2022-11-19 08:35:14,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/data/afe35c6b6/e812cd6885e24e5da9065cfc3ddd9ae1/FLAGc230bfa18 [2022-11-19 08:35:15,424 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:35:15,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c [2022-11-19 08:35:15,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/data/afe35c6b6/e812cd6885e24e5da9065cfc3ddd9ae1/FLAGc230bfa18 [2022-11-19 08:35:15,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/data/afe35c6b6/e812cd6885e24e5da9065cfc3ddd9ae1 [2022-11-19 08:35:15,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:35:15,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:35:15,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:35:15,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:35:15,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:35:15,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:35:15" (1/1) ... [2022-11-19 08:35:15,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129aaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:15, skipping insertion in model container [2022-11-19 08:35:15,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:35:15" (1/1) ... [2022-11-19 08:35:15,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:35:15,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:35:16,122 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c[13463,13476] [2022-11-19 08:35:16,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:35:16,168 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:35:16,230 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c[13463,13476] [2022-11-19 08:35:16,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:35:16,269 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:35:16,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16 WrapperNode [2022-11-19 08:35:16,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:35:16,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:35:16,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:35:16,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:35:16,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,328 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 230 [2022-11-19 08:35:16,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:35:16,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:35:16,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:35:16,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:35:16,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:35:16,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:35:16,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:35:16,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:35:16,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (1/1) ... [2022-11-19 08:35:16,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:35:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:35:16,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:35:16,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:35:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:35:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 08:35:16,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 08:35:16,505 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 08:35:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 08:35:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 08:35:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 08:35:16,506 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:35:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:35:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 08:35:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 08:35:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-19 08:35:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-19 08:35:16,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:35:16,508 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 08:35:16,508 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 08:35:16,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:35:16,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:35:16,639 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:35:16,642 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:35:17,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:35:17,414 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:35:17,414 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:35:17,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:17 BoogieIcfgContainer [2022-11-19 08:35:17,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:35:17,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:35:17,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:35:17,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:35:17,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:35:15" (1/3) ... [2022-11-19 08:35:17,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673761c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:17, skipping insertion in model container [2022-11-19 08:35:17,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:16" (2/3) ... [2022-11-19 08:35:17,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673761c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:17, skipping insertion in model container [2022-11-19 08:35:17,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:17" (3/3) ... [2022-11-19 08:35:17,454 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product60.cil.c [2022-11-19 08:35:17,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:35:17,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:35:17,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:35:17,615 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33cbeadf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:35:17,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:35:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:35:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:35:17,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:17,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:17,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash -37410934, now seen corresponding path program 1 times [2022-11-19 08:35:17,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587467284] [2022-11-19 08:35:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:17,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:17,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587467284] [2022-11-19 08:35:17,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587467284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:17,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:17,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:35:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201585165] [2022-11-19 08:35:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:17,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:35:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:35:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:35:18,004 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:18,122 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2022-11-19 08:35:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:35:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:35:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:18,139 INFO L225 Difference]: With dead ends: 116 [2022-11-19 08:35:18,140 INFO L226 Difference]: Without dead ends: 54 [2022-11-19 08:35:18,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:35:18,149 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:18,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:35:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-19 08:35:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-19 08:35:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:35:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2022-11-19 08:35:18,213 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2022-11-19 08:35:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:18,214 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2022-11-19 08:35:18,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2022-11-19 08:35:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:35:18,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:18,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:18,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:35:18,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2092430191, now seen corresponding path program 1 times [2022-11-19 08:35:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:18,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144265536] [2022-11-19 08:35:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:18,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:18,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144265536] [2022-11-19 08:35:18,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144265536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:18,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:18,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:18,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783123477] [2022-11-19 08:35:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:18,412 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:18,514 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-11-19 08:35:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 08:35:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:18,518 INFO L225 Difference]: With dead ends: 80 [2022-11-19 08:35:18,519 INFO L226 Difference]: Without dead ends: 46 [2022-11-19 08:35:18,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:18,521 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:18,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:35:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-19 08:35:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-19 08:35:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 08:35:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-19 08:35:18,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2022-11-19 08:35:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:18,541 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-19 08:35:18,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-19 08:35:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:35:18,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:18,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:18,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:35:18,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -503628936, now seen corresponding path program 1 times [2022-11-19 08:35:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512261598] [2022-11-19 08:35:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:18,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:18,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512261598] [2022-11-19 08:35:18,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512261598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:18,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:18,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:35:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82666763] [2022-11-19 08:35:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:18,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:35:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:35:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:35:18,745 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:18,861 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2022-11-19 08:35:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:35:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 08:35:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:18,864 INFO L225 Difference]: With dead ends: 119 [2022-11-19 08:35:18,864 INFO L226 Difference]: Without dead ends: 75 [2022-11-19 08:35:18,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:35:18,866 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 83 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:18,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:35:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-19 08:35:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-19 08:35:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 08:35:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-19 08:35:18,888 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 16 [2022-11-19 08:35:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:18,889 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-19 08:35:18,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-19 08:35:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:35:18,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:18,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:18,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:35:18,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2011774462, now seen corresponding path program 1 times [2022-11-19 08:35:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:18,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333360361] [2022-11-19 08:35:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:19,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:19,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333360361] [2022-11-19 08:35:19,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333360361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:19,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:19,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:35:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604451894] [2022-11-19 08:35:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:19,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:35:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:35:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:35:19,243 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:19,508 INFO L93 Difference]: Finished difference Result 239 states and 319 transitions. [2022-11-19 08:35:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:35:19,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 08:35:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:19,512 INFO L225 Difference]: With dead ends: 239 [2022-11-19 08:35:19,513 INFO L226 Difference]: Without dead ends: 169 [2022-11-19 08:35:19,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:35:19,516 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 71 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:19,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 194 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:35:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-19 08:35:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2022-11-19 08:35:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 100 states have (on average 1.33) internal successors, (133), 115 states have internal predecessors, (133), 21 states have call successors, (21), 18 states have call predecessors, (21), 20 states have return successors, (26), 19 states have call predecessors, (26), 21 states have call successors, (26) [2022-11-19 08:35:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2022-11-19 08:35:19,551 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 19 [2022-11-19 08:35:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:19,552 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2022-11-19 08:35:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:35:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2022-11-19 08:35:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:35:19,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:19,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:35:19,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1302872931, now seen corresponding path program 1 times [2022-11-19 08:35:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546838037] [2022-11-19 08:35:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:19,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:19,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:19,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546838037] [2022-11-19 08:35:19,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546838037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:19,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 08:35:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379699216] [2022-11-19 08:35:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:35:19,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:35:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:35:19,973 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:35:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:20,622 INFO L93 Difference]: Finished difference Result 339 states and 450 transitions. [2022-11-19 08:35:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 08:35:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2022-11-19 08:35:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:20,632 INFO L225 Difference]: With dead ends: 339 [2022-11-19 08:35:20,632 INFO L226 Difference]: Without dead ends: 269 [2022-11-19 08:35:20,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:35:20,635 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 239 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 244 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:35:20,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-19 08:35:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 236. [2022-11-19 08:35:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 165 states have (on average 1.3151515151515152) internal successors, (217), 190 states have internal predecessors, (217), 36 states have call successors, (36), 30 states have call predecessors, (36), 34 states have return successors, (45), 33 states have call predecessors, (45), 36 states have call successors, (45) [2022-11-19 08:35:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 298 transitions. [2022-11-19 08:35:20,742 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 298 transitions. Word has length 22 [2022-11-19 08:35:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:20,744 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 298 transitions. [2022-11-19 08:35:20,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:35:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 298 transitions. [2022-11-19 08:35:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 08:35:20,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:20,752 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:35:20,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:35:20,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:20,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 870628612, now seen corresponding path program 1 times [2022-11-19 08:35:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799480350] [2022-11-19 08:35:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:20,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:20,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799480350] [2022-11-19 08:35:20,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799480350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:20,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:20,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:35:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390058138] [2022-11-19 08:35:20,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:35:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:35:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:35:20,823 INFO L87 Difference]: Start difference. First operand 236 states and 298 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:35:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:20,995 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2022-11-19 08:35:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:35:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-19 08:35:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:21,002 INFO L225 Difference]: With dead ends: 481 [2022-11-19 08:35:21,002 INFO L226 Difference]: Without dead ends: 247 [2022-11-19 08:35:21,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:35:21,015 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 82 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 108 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:35:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-19 08:35:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 222. [2022-11-19 08:35:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 156 states have (on average 1.2884615384615385) internal successors, (201), 178 states have internal predecessors, (201), 32 states have call successors, (32), 29 states have call predecessors, (32), 33 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-19 08:35:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 269 transitions. [2022-11-19 08:35:21,071 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 269 transitions. Word has length 44 [2022-11-19 08:35:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:21,072 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 269 transitions. [2022-11-19 08:35:21,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:35:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 269 transitions. [2022-11-19 08:35:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 08:35:21,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:21,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:35:21,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 933952714, now seen corresponding path program 1 times [2022-11-19 08:35:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:21,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727764853] [2022-11-19 08:35:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:21,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727764853] [2022-11-19 08:35:21,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727764853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:35:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478024281] [2022-11-19 08:35:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:21,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:35:21,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:35:21,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:35:21,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:35:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:21,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 08:35:21,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:35:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:35:21,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:35:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:35:22,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478024281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:35:22,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80959773] [2022-11-19 08:35:22,489 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-19 08:35:22,490 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:35:22,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:35:22,501 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:35:22,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:35:27,752 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2022-11-19 08:35:27,916 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2022-11-19 08:35:27,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:35:34,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3718#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= 0 |#NULL.base|) (<= 0 ~systemActive~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (<= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~7#1|) (<= 0 ~head~0.base) (<= |#NULL.base| 0) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~7#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= ~head~0.base 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4))' at error location [2022-11-19 08:35:34,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:35:34,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:35:34,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 21 [2022-11-19 08:35:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966663283] [2022-11-19 08:35:34,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:35:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 08:35:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 08:35:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 08:35:34,594 INFO L87 Difference]: Start difference. First operand 222 states and 269 transitions. Second operand has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:35:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:47,316 INFO L93 Difference]: Finished difference Result 2640 states and 3730 transitions. [2022-11-19 08:35:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-11-19 08:35:47,318 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2022-11-19 08:35:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:47,346 INFO L225 Difference]: With dead ends: 2640 [2022-11-19 08:35:47,346 INFO L226 Difference]: Without dead ends: 2490 [2022-11-19 08:35:47,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21813 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=5653, Invalid=45197, Unknown=0, NotChecked=0, Total=50850 [2022-11-19 08:35:47,372 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 2582 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 3915 mSolverCounterSat, 2409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 6324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2409 IncrementalHoareTripleChecker+Valid, 3915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:47,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 1316 Invalid, 6324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2409 Valid, 3915 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-19 08:35:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-11-19 08:35:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1715. [2022-11-19 08:35:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1262 states have (on average 1.3003169572107764) internal successors, (1641), 1361 states have internal predecessors, (1641), 211 states have call successors, (211), 199 states have call predecessors, (211), 241 states have return successors, (290), 232 states have call predecessors, (290), 211 states have call successors, (290) [2022-11-19 08:35:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2142 transitions. [2022-11-19 08:35:47,763 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2142 transitions. Word has length 41 [2022-11-19 08:35:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:47,764 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2142 transitions. [2022-11-19 08:35:47,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 08:35:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2142 transitions. [2022-11-19 08:35:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 08:35:47,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:47,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:47,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:35:47,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:35:47,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1625036378, now seen corresponding path program 1 times [2022-11-19 08:35:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:47,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944293320] [2022-11-19 08:35:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:47,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:48,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944293320] [2022-11-19 08:35:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944293320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:48,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 08:35:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629154729] [2022-11-19 08:35:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:35:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:35:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:35:48,414 INFO L87 Difference]: Start difference. First operand 1715 states and 2142 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:35:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:49,076 INFO L93 Difference]: Finished difference Result 2706 states and 3425 transitions. [2022-11-19 08:35:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:35:49,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2022-11-19 08:35:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:49,086 INFO L225 Difference]: With dead ends: 2706 [2022-11-19 08:35:49,086 INFO L226 Difference]: Without dead ends: 1611 [2022-11-19 08:35:49,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:35:49,090 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 199 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:49,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 175 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:35:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-11-19 08:35:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1451. [2022-11-19 08:35:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1071 states have (on average 1.3034547152194211) internal successors, (1396), 1157 states have internal predecessors, (1396), 178 states have call successors, (178), 156 states have call predecessors, (178), 201 states have return successors, (271), 193 states have call predecessors, (271), 178 states have call successors, (271) [2022-11-19 08:35:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1845 transitions. [2022-11-19 08:35:49,308 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1845 transitions. Word has length 44 [2022-11-19 08:35:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:49,308 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1845 transitions. [2022-11-19 08:35:49,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:35:49,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1845 transitions. [2022-11-19 08:35:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 08:35:49,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:49,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:35:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:35:49,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2035928039, now seen corresponding path program 1 times [2022-11-19 08:35:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886553208] [2022-11-19 08:35:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:50,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886553208] [2022-11-19 08:35:50,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886553208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:35:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310582568] [2022-11-19 08:35:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:50,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:35:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:35:50,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:35:50,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:35:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:50,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 08:35:50,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:35:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:35:50,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:35:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:35:51,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310582568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:35:51,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1413511358] [2022-11-19 08:35:51,172 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-19 08:35:51,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:35:51,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:35:51,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:35:51,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:35:56,651 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 149 for LOIs [2022-11-19 08:35:56,729 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2022-11-19 08:35:57,000 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2022-11-19 08:35:57,083 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2022-11-19 08:35:57,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:36:04,707 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17580#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 0) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~7#1|) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~7#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= ~head~0.base 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:36:04,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:36:04,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:36:04,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 13] total 35 [2022-11-19 08:36:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25318263] [2022-11-19 08:36:04,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:36:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 08:36:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 08:36:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3398, Unknown=0, NotChecked=0, Total=3782 [2022-11-19 08:36:04,711 INFO L87 Difference]: Start difference. First operand 1451 states and 1845 transitions. Second operand has 35 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 12 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 08:36:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:22,638 INFO L93 Difference]: Finished difference Result 10243 states and 14422 transitions. [2022-11-19 08:36:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-11-19 08:36:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 12 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) Word has length 47 [2022-11-19 08:36:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:22,696 INFO L225 Difference]: With dead ends: 10243 [2022-11-19 08:36:22,697 INFO L226 Difference]: Without dead ends: 9021 [2022-11-19 08:36:22,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22132 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=6059, Invalid=48463, Unknown=0, NotChecked=0, Total=54522 [2022-11-19 08:36:22,716 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2514 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 5834 mSolverCounterSat, 2228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 8062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2228 IncrementalHoareTripleChecker+Valid, 5834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:22,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 1780 Invalid, 8062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2228 Valid, 5834 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 08:36:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9021 states. [2022-11-19 08:36:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9021 to 6823. [2022-11-19 08:36:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6823 states, 5070 states have (on average 1.2923076923076924) internal successors, (6552), 5430 states have internal predecessors, (6552), 856 states have call successors, (856), 726 states have call predecessors, (856), 896 states have return successors, (1407), 866 states have call predecessors, (1407), 856 states have call successors, (1407) [2022-11-19 08:36:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6823 states to 6823 states and 8815 transitions. [2022-11-19 08:36:23,951 INFO L78 Accepts]: Start accepts. Automaton has 6823 states and 8815 transitions. Word has length 47 [2022-11-19 08:36:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:23,952 INFO L495 AbstractCegarLoop]: Abstraction has 6823 states and 8815 transitions. [2022-11-19 08:36:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 12 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 08:36:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6823 states and 8815 transitions. [2022-11-19 08:36:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 08:36:23,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:23,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 08:36:23,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:24,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 08:36:24,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1708179587, now seen corresponding path program 1 times [2022-11-19 08:36:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572736084] [2022-11-19 08:36:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:36:25,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572736084] [2022-11-19 08:36:25,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572736084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528510950] [2022-11-19 08:36:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:25,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:25,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:25,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:36:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:25,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 08:36:25,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:36:25,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:36:25,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528510950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668964366] [2022-11-19 08:36:25,827 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 08:36:25,827 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:25,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:25,828 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:25,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:28,687 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 29 for LOIs [2022-11-19 08:36:28,693 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 43 for LOIs [2022-11-19 08:36:29,107 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2022-11-19 08:36:29,142 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 32 for LOIs [2022-11-19 08:36:29,145 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:36:34,591 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '44827#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= 0 |#NULL.base|) (<= 0 ~systemActive~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (<= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~7#1|) (<= 0 ~head~0.base) (<= |#NULL.base| 0) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~7#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (<= ~head~0.base 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4))' at error location [2022-11-19 08:36:34,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:36:34,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:36:34,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 26 [2022-11-19 08:36:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324642581] [2022-11-19 08:36:34,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:36:34,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 08:36:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 08:36:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2771, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 08:36:34,594 INFO L87 Difference]: Start difference. First operand 6823 states and 8815 transitions. Second operand has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-19 08:36:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:42,880 INFO L93 Difference]: Finished difference Result 15374 states and 21076 transitions. [2022-11-19 08:36:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-19 08:36:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) Word has length 64 [2022-11-19 08:36:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:42,940 INFO L225 Difference]: With dead ends: 15374 [2022-11-19 08:36:42,940 INFO L226 Difference]: Without dead ends: 11281 [2022-11-19 08:36:42,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8751 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=2250, Invalid=20400, Unknown=0, NotChecked=0, Total=22650 [2022-11-19 08:36:42,962 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1696 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 1052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:42,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 1119 Invalid, 4072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 08:36:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2022-11-19 08:36:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 8818. [2022-11-19 08:36:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8818 states, 6511 states have (on average 1.2732299185992935) internal successors, (8290), 6973 states have internal predecessors, (8290), 1136 states have call successors, (1136), 963 states have call predecessors, (1136), 1170 states have return successors, (1681), 1128 states have call predecessors, (1681), 1136 states have call successors, (1681) [2022-11-19 08:36:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 11107 transitions. [2022-11-19 08:36:44,559 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 11107 transitions. Word has length 64 [2022-11-19 08:36:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:44,560 INFO L495 AbstractCegarLoop]: Abstraction has 8818 states and 11107 transitions. [2022-11-19 08:36:44,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-19 08:36:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 11107 transitions. [2022-11-19 08:36:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 08:36:44,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:44,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 08:36:44,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:36:44,770 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 128055544, now seen corresponding path program 1 times [2022-11-19 08:36:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:44,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76030185] [2022-11-19 08:36:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 08:36:45,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76030185] [2022-11-19 08:36:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76030185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:45,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:45,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:36:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739941208] [2022-11-19 08:36:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:45,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:36:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:36:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:45,062 INFO L87 Difference]: Start difference. First operand 8818 states and 11107 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 08:36:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:46,488 INFO L93 Difference]: Finished difference Result 10823 states and 13740 transitions. [2022-11-19 08:36:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:36:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-11-19 08:36:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:46,529 INFO L225 Difference]: With dead ends: 10823 [2022-11-19 08:36:46,529 INFO L226 Difference]: Without dead ends: 9058 [2022-11-19 08:36:46,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:36:46,538 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:46,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 140 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:36:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9058 states. [2022-11-19 08:36:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9058 to 8670. [2022-11-19 08:36:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 6412 states have (on average 1.2702744853399874) internal successors, (8145), 6842 states have internal predecessors, (8145), 1110 states have call successors, (1110), 951 states have call predecessors, (1110), 1147 states have return successors, (1612), 1120 states have call predecessors, (1612), 1110 states have call successors, (1612) [2022-11-19 08:36:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 10867 transitions. [2022-11-19 08:36:48,026 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 10867 transitions. Word has length 72 [2022-11-19 08:36:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 8670 states and 10867 transitions. [2022-11-19 08:36:48,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 08:36:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 10867 transitions. [2022-11-19 08:36:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 08:36:48,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:48,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:36:48,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1876033185, now seen corresponding path program 1 times [2022-11-19 08:36:48,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:48,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306235061] [2022-11-19 08:36:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:36:48,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:48,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306235061] [2022-11-19 08:36:48,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306235061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:48,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941148525] [2022-11-19 08:36:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:48,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:48,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:48,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:36:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:48,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:36:48,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 08:36:49,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:36:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941148525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:49,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:36:49,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-19 08:36:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763517503] [2022-11-19 08:36:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:36:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:36:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:36:49,013 INFO L87 Difference]: Start difference. First operand 8670 states and 10867 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 08:36:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:50,198 INFO L93 Difference]: Finished difference Result 13159 states and 16637 transitions. [2022-11-19 08:36:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:36:50,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-11-19 08:36:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:50,230 INFO L225 Difference]: With dead ends: 13159 [2022-11-19 08:36:50,230 INFO L226 Difference]: Without dead ends: 7761 [2022-11-19 08:36:50,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:36:50,248 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 67 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:50,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 254 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:36:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2022-11-19 08:36:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 7606. [2022-11-19 08:36:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 5676 states have (on average 1.2646229739252994) internal successors, (7178), 6032 states have internal predecessors, (7178), 937 states have call successors, (937), 824 states have call predecessors, (937), 992 states have return successors, (1350), 966 states have call predecessors, (1350), 937 states have call successors, (1350) [2022-11-19 08:36:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 9465 transitions. [2022-11-19 08:36:51,288 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 9465 transitions. Word has length 77 [2022-11-19 08:36:51,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:51,288 INFO L495 AbstractCegarLoop]: Abstraction has 7606 states and 9465 transitions. [2022-11-19 08:36:51,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 08:36:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 9465 transitions. [2022-11-19 08:36:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 08:36:51,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:51,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-19 08:36:51,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:51,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 08:36:51,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash 247591075, now seen corresponding path program 1 times [2022-11-19 08:36:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:51,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358044144] [2022-11-19 08:36:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 08:36:52,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:52,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358044144] [2022-11-19 08:36:52,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358044144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917939101] [2022-11-19 08:36:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:52,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:52,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:36:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:52,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 08:36:52,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:36:52,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 43 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:36:53,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917939101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:53,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1035881313] [2022-11-19 08:36:53,353 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-19 08:36:53,353 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:53,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:53,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:53,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:58,629 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 150 for LOIs [2022-11-19 08:36:58,669 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 42 for LOIs [2022-11-19 08:36:58,867 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 59 for LOIs [2022-11-19 08:36:59,060 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 41 for LOIs [2022-11-19 08:36:59,067 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 37 for LOIs [2022-11-19 08:36:59,069 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:37:06,832 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145642#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 ~systemActive~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= ~head~0.offset 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~7#1|) (<= 0 ~methaneLevelCritical~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~7#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 08:37:06,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:37:06,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:37:06,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 9] total 30 [2022-11-19 08:37:06,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252022859] [2022-11-19 08:37:06,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:37:06,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 08:37:06,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:06,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 08:37:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2022-11-19 08:37:06,835 INFO L87 Difference]: Start difference. First operand 7606 states and 9465 transitions. Second operand has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 27 states have internal predecessors, (123), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 08:37:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:10,715 INFO L93 Difference]: Finished difference Result 12447 states and 15660 transitions. [2022-11-19 08:37:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-19 08:37:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 27 states have internal predecessors, (123), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) Word has length 90 [2022-11-19 08:37:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:10,718 INFO L225 Difference]: With dead ends: 12447 [2022-11-19 08:37:10,718 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:37:10,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 230 SyntacticMatches, 14 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6425 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=1847, Invalid=13903, Unknown=0, NotChecked=0, Total=15750 [2022-11-19 08:37:10,742 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 758 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:10,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 555 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 08:37:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:37:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:37:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:37:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:37:10,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2022-11-19 08:37:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:10,745 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:37:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.241379310344827) internal successors, (123), 27 states have internal predecessors, (123), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 08:37:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:37:10,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:37:10,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:37:10,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:37:10,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:37:10,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:37:18,331 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 750 DAG size of output: 256 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-19 08:37:43,086 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 302 DAG size of output: 255 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-19 08:37:51,181 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 629 DAG size of output: 382 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-19 08:38:29,233 WARN L233 SmtUtils]: Spent 35.95s on a formula simplification. DAG size of input: 414 DAG size of output: 372 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-19 08:39:17,164 WARN L233 SmtUtils]: Spent 45.77s on a formula simplification. DAG size of input: 1103 DAG size of output: 594 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-19 08:39:32,146 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 1132 DAG size of output: 50 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:39:42,730 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 1042 DAG size of output: 61 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:39:53,661 WARN L233 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 1118 DAG size of output: 29 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:00,586 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 861 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:14,558 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 774 DAG size of output: 39 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:26,108 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 861 DAG size of output: 28 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:40,352 WARN L233 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 996 DAG size of output: 46 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:48,326 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 937 DAG size of output: 34 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:58,608 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 816 DAG size of output: 26 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:40:58,612 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 714 721) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0)) [2022-11-19 08:40:58,612 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 714 721) no Hoare annotation was computed. [2022-11-19 08:40:58,613 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 629 635) no Hoare annotation was computed. [2022-11-19 08:40:58,613 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 629 635) the Hoare annotation is: true [2022-11-19 08:40:58,613 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 935 946) the Hoare annotation is: (let ((.cse8 (= ~pumpRunning~0 1))) (let ((.cse10 (= ~methaneLevelCritical~0 0)) (.cse11 (not .cse8)) (.cse2 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse9 (not .cse2)) (.cse5 (not (= 1 ~systemActive~0))) (.cse6 (and .cse2 .cse11)) (.cse1 (not (= ~pumpRunning~0 0))) (.cse7 (not (<= 2 ~waterLevel~0))) (.cse3 (not .cse10)) (.cse4 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse5 .cse2 .cse3) (or .cse6 .cse5 .cse7 .cse3 .cse8) (or .cse9 .cse1 .cse10 .cse7 .cse4) (or .cse0 .cse9 .cse1 .cse10 .cse4) (or .cse9 .cse1 .cse10 .cse5 (not (<= 1 ~waterLevel~0))) (or .cse9 .cse10 .cse5 .cse7 .cse11) (or .cse6 .cse1 .cse7 .cse3 .cse4))))) [2022-11-19 08:40:58,613 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 935 946) no Hoare annotation was computed. [2022-11-19 08:40:58,614 INFO L899 garLoopResultBuilder]: For program point L609-1(lines 608 627) no Hoare annotation was computed. [2022-11-19 08:40:58,614 INFO L899 garLoopResultBuilder]: For program point L671(lines 671 679) no Hoare annotation was computed. [2022-11-19 08:40:58,614 INFO L895 garLoopResultBuilder]: At program point L667(lines 667 684) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not .cse3)) (.cse2 (not (<= 1 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse3)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 (= ~pumpRunning~0 0) (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse0 .cse2 (not (= 0 ~systemActive~0)))))) [2022-11-19 08:40:58,615 INFO L895 garLoopResultBuilder]: At program point L677(line 677) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse2 (not (= 0 ~systemActive~0))) (or .cse1 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:40:58,615 INFO L895 garLoopResultBuilder]: At program point L673(line 673) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse2 (not (= 0 ~systemActive~0))) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |timeShift_processEnvironment_~tmp~6#1|)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:40:58,615 INFO L899 garLoopResultBuilder]: For program point L570(lines 570 576) no Hoare annotation was computed. [2022-11-19 08:40:58,616 INFO L895 garLoopResultBuilder]: At program point L566(lines 566 579) the Hoare annotation is: (let ((.cse8 (= ~pumpRunning~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse1 (and .cse8 .cse7)) (.cse9 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (= ~methaneLevelCritical~0 0)) (.cse5 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| ~waterLevel~0)) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (not .cse6)) (.cse12 (not (= |old(~waterLevel~0)| 1))) (.cse13 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 1)) (.cse10 (or .cse1 (and (not .cse8) (let ((.cse14 (< 0 |old(~waterLevel~0)|))) (or (and (not .cse14) .cse7) (and .cse9 .cse14)))))) (.cse11 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 (not (<= 1 |old(~waterLevel~0)|))) (or .cse0 .cse3 (not .cse2) (= ~pumpRunning~0 1) .cse4) (or .cse3 (and .cse5 .cse6 .cse7) (and .cse8 .cse5 .cse9 (<= 1 |timeShift_processEnvironment_~tmp~6#1|)) .cse4) (or .cse0 (and .cse5 .cse10 .cse7) .cse11 .cse4) (or .cse0 .cse12 .cse3 (and .cse8 .cse13 (= ~waterLevel~0 1))) (or .cse0 .cse12 (and .cse13 .cse10 (<= |old(~waterLevel~0)| ~waterLevel~0)) .cse11))))) [2022-11-19 08:40:58,616 INFO L895 garLoopResultBuilder]: At program point L566-1(lines 558 582) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse6 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| ~waterLevel~0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (= ~methaneLevelCritical~0 0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|))) (.cse3 (not (= 1 ~systemActive~0))) (.cse0 (not .cse5)) (.cse4 (not (<= 1 |old(~waterLevel~0)|))) (.cse9 (and .cse1 .cse6 .cse8))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse3 .cse5 (and .cse1 .cse6 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |timeShift_processEnvironment_~tmp~6#1|)) .cse7) (or .cse0 .cse3 (not .cse2) (= ~pumpRunning~0 1) .cse7) (or .cse0 (and .cse6 (not (= |old(~waterLevel~0)| 1)) .cse8) .cse3 .cse4 .cse9) (or .cse0 .cse4 (not (= 0 ~systemActive~0)) .cse9)))) [2022-11-19 08:40:58,616 INFO L895 garLoopResultBuilder]: At program point L682(line 682) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse1 .cse2) (or .cse0 .cse2 (not (= 0 ~systemActive~0))) (or .cse1 .cse3 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 08:40:58,617 INFO L895 garLoopResultBuilder]: At program point L682-1(lines 663 687) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (= ~pumpRunning~0 0)) (.cse0 (not .cse6)) (.cse4 (not (= 1 ~systemActive~0))) (.cse3 (= ~methaneLevelCritical~0 0)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (and .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse0 .cse5 (not (= 0 ~systemActive~0))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse4 (and .cse1 (= ~waterLevel~0 1))) (or .cse4 .cse6 (and .cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |timeShift_processEnvironment_~tmp~6#1|)) .cse7) (or .cse0 .cse4 (not .cse3) (and .cse2 (= ~pumpRunning~0 1)) .cse7)))) [2022-11-19 08:40:58,617 INFO L895 garLoopResultBuilder]: At program point L616-1(lines 616 622) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse5 (= ~pumpRunning~0 0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse1 (and .cse5 .cse8)) (.cse4 (not (<= 1 |old(~waterLevel~0)|))) (.cse0 (not .cse6)) (.cse3 (not (= 1 ~systemActive~0))) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse5 (= ~waterLevel~0 1))) (or .cse0 .cse1 .cse4 (not (= 0 ~systemActive~0))) (or .cse3 .cse6 (and .cse5 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |timeShift_processEnvironment_~tmp~6#1|)) .cse7) (or .cse0 .cse3 (not .cse2) (and .cse8 (= ~pumpRunning~0 1)) .cse7)))) [2022-11-19 08:40:58,618 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 605 628) the Hoare annotation is: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (<= 1 |old(~waterLevel~0)|))) (.cse2 (not (= 1 ~systemActive~0))) (.cse4 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1))) (and (or .cse0 (and (= ~pumpRunning~0 0) .cse1) .cse2 .cse3) (or .cse0 .cse3 .cse4 (not (= 0 ~systemActive~0))) (or .cse2 .cse4 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 08:40:58,618 INFO L895 garLoopResultBuilder]: At program point L588(line 588) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse2 (not (= 0 ~systemActive~0))) (or .cse1 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:40:58,618 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 605 628) no Hoare annotation was computed. [2022-11-19 08:40:58,618 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 588) no Hoare annotation was computed. [2022-11-19 08:40:58,619 INFO L902 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: true [2022-11-19 08:40:58,619 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 90 119) no Hoare annotation was computed. [2022-11-19 08:40:58,619 INFO L899 garLoopResultBuilder]: For program point L96-1(line 96) no Hoare annotation was computed. [2022-11-19 08:40:58,619 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 90 119) the Hoare annotation is: true [2022-11-19 08:40:58,619 INFO L902 garLoopResultBuilder]: At program point L115(lines 90 119) the Hoare annotation is: true [2022-11-19 08:40:58,620 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2022-11-19 08:40:58,620 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2022-11-19 08:40:58,620 INFO L902 garLoopResultBuilder]: At program point L104-1(lines 104 108) the Hoare annotation is: true [2022-11-19 08:40:58,620 INFO L902 garLoopResultBuilder]: At program point L100-2(lines 100 114) the Hoare annotation is: true [2022-11-19 08:40:58,620 INFO L899 garLoopResultBuilder]: For program point L820(lines 820 826) no Hoare annotation was computed. [2022-11-19 08:40:58,621 INFO L895 garLoopResultBuilder]: At program point L820-1(lines 820 826) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 1 ~waterLevel~0)) [2022-11-19 08:40:58,621 INFO L902 garLoopResultBuilder]: At program point L903(lines 840 907) the Hoare annotation is: true [2022-11-19 08:40:58,621 INFO L899 garLoopResultBuilder]: For program point L870(lines 870 876) no Hoare annotation was computed. [2022-11-19 08:40:58,621 INFO L899 garLoopResultBuilder]: For program point L870-1(lines 870 876) no Hoare annotation was computed. [2022-11-19 08:40:58,621 INFO L895 garLoopResultBuilder]: At program point L862(line 862) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (<= 1 ~waterLevel~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) (<= 2 ~waterLevel~0) .cse2 .cse3) (and .cse0 .cse1 .cse3 .cse4 (= 0 ~systemActive~0)))) [2022-11-19 08:40:58,622 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 08:40:58,622 INFO L895 garLoopResultBuilder]: At program point L900(lines 849 901) the Hoare annotation is: false [2022-11-19 08:40:58,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:40:58,622 INFO L899 garLoopResultBuilder]: For program point L888(lines 888 894) no Hoare annotation was computed. [2022-11-19 08:40:58,622 INFO L895 garLoopResultBuilder]: At program point L822(line 822) the Hoare annotation is: (and (not (= ~pumpRunning~0 0)) (= |ULTIMATE.start_main_~tmp~0#1| 1) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-19 08:40:58,623 INFO L895 garLoopResultBuilder]: At program point L888-2(lines 880 895) the Hoare annotation is: (let ((.cse6 (= 0 ~systemActive~0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (<= 1 ~waterLevel~0)) (.cse3 (not .cse6))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse5 .cse6) (and .cse4 .cse0 .cse1 .cse2 .cse5 .cse3)))) [2022-11-19 08:40:58,623 INFO L899 garLoopResultBuilder]: For program point L851(lines 850 899) no Hoare annotation was computed. [2022-11-19 08:40:58,623 INFO L895 garLoopResultBuilder]: At program point L880(lines 880 895) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3) (and .cse0 .cse1 .cse3 (<= 1 ~waterLevel~0) (= 0 ~systemActive~0)))) [2022-11-19 08:40:58,624 INFO L895 garLoopResultBuilder]: At program point L872(line 872) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (<= 1 ~waterLevel~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) (<= 2 ~waterLevel~0) .cse2 .cse3) (and .cse0 .cse1 .cse3 .cse4 (= 0 ~systemActive~0)))) [2022-11-19 08:40:58,624 INFO L895 garLoopResultBuilder]: At program point L897(lines 850 899) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (<= 1 ~waterLevel~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) (<= 2 ~waterLevel~0) .cse2 .cse3) (and .cse0 .cse1 .cse3 .cse4 (= 0 ~systemActive~0)))) [2022-11-19 08:40:58,624 INFO L899 garLoopResultBuilder]: For program point L860(lines 860 866) no Hoare annotation was computed. [2022-11-19 08:40:58,624 INFO L899 garLoopResultBuilder]: For program point L860-1(lines 860 866) no Hoare annotation was computed. [2022-11-19 08:40:58,625 INFO L895 garLoopResultBuilder]: At program point L175(lines 175 182) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2022-11-19 08:40:58,625 INFO L902 garLoopResultBuilder]: At program point L175-2(lines 175 182) the Hoare annotation is: true [2022-11-19 08:40:58,625 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 637 661) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse3 (and (not .cse4) (< 0 ~waterLevel~0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= ~waterLevel~0 1))) (and (or (not .cse0) .cse1 .cse2 .cse3) (or .cse1 .cse2 (not (<= 2 ~waterLevel~0)) .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse4 .cse0 (= ~waterLevel~0 0))))) [2022-11-19 08:40:58,625 INFO L895 garLoopResultBuilder]: At program point L651(line 651) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (= ~waterLevel~0 1)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (not .cse3) (< 0 ~waterLevel~0)))) (and (or (not .cse0) .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0)) .cse2) (or .cse1 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse3 .cse0 (= ~waterLevel~0 0)) (or .cse1 (not (<= 2 ~waterLevel~0)) .cse2)))) [2022-11-19 08:40:58,626 INFO L895 garLoopResultBuilder]: At program point L645(lines 645 653) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (= ~pumpRunning~0 0)) (.cse3 (and (not .cse4) (< 0 ~waterLevel~0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= ~waterLevel~0 1))) (and (or (not .cse0) .cse1 (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0)) .cse3) (or .cse1 (not (<= 2 ~waterLevel~0)) (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1)) .cse3) (or .cse1 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse4 .cse0 (= ~waterLevel~0 0))))) [2022-11-19 08:40:58,626 INFO L895 garLoopResultBuilder]: At program point L641(lines 641 658) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse3 (and (not .cse4) (< 0 ~waterLevel~0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= ~waterLevel~0 1))) (and (or (not .cse0) .cse1 .cse2 .cse3) (or .cse1 .cse2 (not (<= 2 ~waterLevel~0)) .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse4 .cse0 (= ~waterLevel~0 0))))) [2022-11-19 08:40:58,626 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 637 661) no Hoare annotation was computed. [2022-11-19 08:40:58,626 INFO L895 garLoopResultBuilder]: At program point L656(line 656) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 (not (<= 2 ~waterLevel~0))) (or (not .cse2) .cse0 .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse3 .cse2 (= ~waterLevel~0 0))))) [2022-11-19 08:40:58,627 INFO L899 garLoopResultBuilder]: For program point L656-1(lines 637 661) no Hoare annotation was computed. [2022-11-19 08:40:58,627 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 923 934) no Hoare annotation was computed. [2022-11-19 08:40:58,627 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 923 934) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse2 (not (<= 1 |old(~waterLevel~0)|))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse2 .cse3 (not (= 0 ~systemActive~0))) (or .cse1 (and (= ~methaneLevelCritical~0 0) (not (= ~pumpRunning~0 1))) .cse3 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 08:40:58,631 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:40:58,633 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:40:58,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:40:58 BoogieIcfgContainer [2022-11-19 08:40:58,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:40:58,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:40:58,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:40:58,671 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:40:58,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:17" (3/4) ... [2022-11-19 08:40:58,676 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:40:58,683 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-19 08:40:58,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 08:40:58,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 08:40:58,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 08:40:58,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 08:40:58,700 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 08:40:58,700 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 08:40:58,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2022-11-19 08:40:58,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-19 08:40:58,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 08:40:58,717 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:40:58,718 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:40:58,758 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) [2022-11-19 08:40:58,760 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-19 08:40:58,765 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || \old(waterLevel) == waterLevel) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(pumpRunning) == 0))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive)) [2022-11-19 08:40:58,766 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) [2022-11-19 08:40:58,766 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(waterLevel == 1) || pumpRunning == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((pumpRunning == 0 || !(1 == systemActive)) || !(2 <= waterLevel)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel))) && (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || \old(pumpRunning) == 0) || waterLevel == 1) || waterLevel == 0) [2022-11-19 08:40:58,768 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || ((tmp == waterLevel && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel)) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || ((tmp == waterLevel && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((tmp == 1 && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && \old(waterLevel) <= waterLevel)) || !(0 == systemActive)) [2022-11-19 08:40:58,769 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((tmp == waterLevel && !(\old(waterLevel) == 1)) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel)) [2022-11-19 08:40:58,769 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (!(1 == systemActive) || !(2 <= \old(waterLevel))) [2022-11-19 08:40:58,772 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(waterLevel == 1) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((!(1 == systemActive) || !(2 <= waterLevel)) || (pumpRunning == 0 && tmp == 1)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel))) && ((((!(1 == systemActive) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || \old(pumpRunning) == 0) || waterLevel == 1) || waterLevel == 0) [2022-11-19 08:40:58,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:40:58,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:40:58,841 INFO L158 Benchmark]: Toolchain (without parser) took 343146.90ms. Allocated memory was 104.9MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 68.0MB in the beginning and 742.4MB in the end (delta: -674.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-19 08:40:58,842 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:40:58,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.70ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 72.0MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:40:58,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.86ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 69.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:40:58,845 INFO L158 Benchmark]: Boogie Preprocessor took 36.75ms. Allocated memory is still 104.9MB. Free memory was 69.5MB in the beginning and 67.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:40:58,845 INFO L158 Benchmark]: RCFGBuilder took 1050.45ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 42.0MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 08:40:58,846 INFO L158 Benchmark]: TraceAbstraction took 341228.80ms. Allocated memory was 134.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 110.0MB in the beginning and 748.7MB in the end (delta: -638.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-19 08:40:58,847 INFO L158 Benchmark]: Witness Printer took 169.26ms. Allocated memory is still 1.8GB. Free memory was 747.7MB in the beginning and 742.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:40:58,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.70ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 72.0MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.86ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 69.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.75ms. Allocated memory is still 104.9MB. Free memory was 69.5MB in the beginning and 67.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1050.45ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 42.0MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 341228.80ms. Allocated memory was 134.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 110.0MB in the beginning and 748.7MB in the end (delta: -638.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 169.26ms. Allocated memory is still 1.8GB. Free memory was 747.7MB in the beginning and 742.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 588]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 341.1s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 48.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 227.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8435 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8363 mSDsluCounter, 6123 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5117 mSDsCounter, 6399 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15296 IncrementalHoareTripleChecker+Invalid, 21695 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6399 mSolverCounterUnsat, 1006 mSDtfsCounter, 15296 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 788 SyntacticMatches, 20 SemanticMatches, 788 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59264 ImplicationChecksByTransitivity, 53.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=10, InterpolantAutomatonStates: 625, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 6227 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 16013 PreInvPairs, 18895 NumberOfFragments, 1710 HoareAnnotationTreeSize, 16013 FomulaSimplifications, 844114 FormulaSimplificationTreeSizeReduction, 126.5s HoareSimplificationTime, 36 FomulaSimplificationsInter, 4065258 FormulaSimplificationTreeSizeReductionInter, 100.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 880 NumberOfCodeBlocks, 880 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 4814 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1582 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 484/662 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: 840]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 880]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 && tmp == 1) && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) || (((tmp == 1 && 2 <= waterLevel) && 1 == systemActive) && splverifierCounter == 0)) || ((((pumpRunning == 0 && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && 0 == systemActive) - InvariantResult [Line: 641]: Loop Invariant Derived loop invariant: ((((!(waterLevel == 1) || pumpRunning == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((pumpRunning == 0 || !(1 == systemActive)) || !(2 <= waterLevel)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel))) && (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || \old(pumpRunning) == 0) || waterLevel == 1) || waterLevel == 0) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 849]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 558]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((tmp == waterLevel && !(\old(waterLevel) == 1)) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive)) || ((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel)) - InvariantResult [Line: 645]: Loop Invariant Derived loop invariant: ((((!(waterLevel == 1) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 0)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel)) && (((!(1 == systemActive) || !(2 <= waterLevel)) || (pumpRunning == 0 && tmp == 1)) || (!(\old(pumpRunning) == 0) && 0 < waterLevel))) && ((((!(1 == systemActive) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || \old(pumpRunning) == 0) || waterLevel == 1) || waterLevel == 0) - InvariantResult [Line: 566]: Loop Invariant Derived loop invariant: ((((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || pumpRunning == 1) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || ((tmp == waterLevel && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel)) || (((pumpRunning == 0 && tmp == waterLevel) && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || ((tmp == waterLevel && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && \old(waterLevel) == waterLevel)) || !(0 == systemActive)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((tmp == 1 && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && ((!(0 < \old(waterLevel)) && \old(waterLevel) == waterLevel) || (\old(waterLevel) == waterLevel + 1 && 0 < \old(waterLevel)))))) && \old(waterLevel) <= waterLevel)) || !(0 == systemActive)) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(0 == systemActive))) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 663]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 850]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 && tmp == 1) && 1 == systemActive) && splverifierCounter == 0) && 1 <= waterLevel) || ((((tmp == 1 && (!(methaneLevelCritical == 0) || pumpRunning == 1)) && 2 <= waterLevel) && 1 == systemActive) && splverifierCounter == 0)) || ((((pumpRunning == 0 && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && 0 == systemActive) - InvariantResult [Line: 820]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (!(1 == systemActive) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || !(0 == systemActive))) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && \old(waterLevel) == waterLevel + 1) && 1 <= tmp)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (\old(waterLevel) == waterLevel && pumpRunning == 1)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 667]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) || \old(waterLevel) == waterLevel) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel + 1 || \old(pumpRunning) == 0))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || !(0 == systemActive)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:40:58,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_611cc5a5-619a-4821-9832-6680af022069/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE